PhD Research Positions

in Particle Tracking Velocimetry, Particle Image Velocimetry, Lagrangian Physics, Optical Measurements


Doctoral student in experimental fluid mechanics

KTH PhD fluid mechanics
Company profile: -The offer: Research within experimental fluid mechanics at KTH is mainly carried out in the Fluid Physics Laboratory. The lab has a variety of experimental measurement systems, from classic hot-wire anemometry to laser-based optical measurement systems. The doctoral project, which is funded by the Swedish Research Council, is about basic studies of the transition process from laminar to turbulent flow under the influence of free-stream turbulence. The position is experimental, and the measurement campaigns will be carried out in wind tunnels to collect valuable data that cannot be done with today's numerical simulations. The experimental database will be used by the doctoral student to increase the physical understanding of the complex transition process, which in turn can lead to better transition models. During the project, the doctoral student will become an expert in various measurement techniques in fluid mechanics. The doctoral student will measure, post-process, analyze measurement data and compile the results for publication in international scientific journals. Requirement: To be admitted to postgraduate education (Chapter 7, 39 § Swedish Higher Education Ordinance), the applicant must have basic eligibility in accordance with either of the following:
  • passed a second cycle degree (for example a master's degree),
  • completed course requirements of at least 240 higher education credits, of which at least 60 second-cycle higher education credits, or
  • acquired, in some other way within or outside the country, substantially equivalent knowledge
  • In addition to the above, there is also a mandatory requirement for English equivalent to English B/6
Organization / University: KTH Royal Institute of TechnologyPosted date: 02/12/2021Deadline: 10/01/2022

Link: jobID:453550

PhD position: PhD in volcanic plume modeling with lattice Boltzmann method

University_of_Geneva_PhD_position_fluid_mechanics
Company profile: Funding from the Swiss National Science Foundation is available for two PhD students to begin in the spring or fall 2022 for a project targeted at the physical and numerical characterization of key size-selective tephra- sedimentation processes (namely particle aggregation and settling-driven gravitational instabilities at the base of volcanic plumes and clouds) and of their relation to plume dynamics. These processes can strongly affect sedimentation of fine ash but are still far from being fully understood, constrained and numerically described.The offer: The PhD position aims at the physical characterization of particle aggregation and settling-driven gravitational instabilities through field observations and scaled laboratory experiments making use of state-of-the-art instrumentations (e.g. combined used of planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV), drones, weather balloons, holography).Requirement: Applicants must hold, or will obtain prior to starting the project, a diploma/master degree, or an equivalent level of education, in Geology, Physics, Geophysics, Engineering, Applied Mathematics, Computer Sciences or an equivalent subject (with a taste for natural phenomena). A background in laboratory experiments and/or numerical methods and programming is advantageous. The students will be integrated in a dynamic research group and only highly motivated candidates will be considered for these positions. CV, a list of 2 referees, and a description of motivation and experience relevant to the project (maximum 1 page), including a preference for either field/lab experiments or numerical methods, to Costanza Bonadonna Costanza.Bonadonna@unige.ch.Organization / University: University of GenevaPosted date: 20/11/2021Deadline: 31/12/2021

Link: https://www.unige.ch/dinfo

PhD position: Development of multifunctional nanocomposite yarns based on carbon nanotubes

CNRS_PHD_position
Company profile: -The offer: In this project, we propose to carry out a systematic study, which includes the synthesis and assembly of CNTs, the study of the mechanisms and the characterization of the properties of threads at several scales. For the synthesis of CNTs, we intend to better understand the processes of formation of nanoparticles from their precursors via in-situ diagnostic techniques and high-resolution microscopic techniques. The developed in-situ laser diagnosis (IPI-Interferometric particle imaging / PTV-Particle tracking velocimetry / GRT-Global rainbow thermometry) makes it possible to study the evolution of the size, route and speed of droplets. Combined with the high-resolution TEM technique, the developed LII (Laser Induced Incandescence) / LIF (Laser Induced Fluorescence) techniques will be used to monitor the nucleation and growth of nanoparticles. For the assembly of the CNTs, a specific spinning technique and equipment will be used depending on the states of organization of the CNTs and the characteristics of the substrate. The optimization of process parameters will be systematically studied, as well as for post-treatments including densification, functionalization or metal alloying. For the properties of CNT wires, a nano/micro/meso multiscale strategy is planned in order to develop an in-depth understanding of the electrical and mechanical properties of wires. To do this, the microscopic platform equipped with SEM, High resolution FIB and HRTEM are available in our laboratory. This helps to correlate the microstructures with the properties of the wire. It would guide us to optimize the previous production conditions and the performance of the final product.Requirement: Candidates with knowledge and expertise in multiple disciplines, including materials science, optical diagnostics, chemistry and physics of CVD processes and polymers / metals, are welcome to apply.Organization / University: CNRSPosted date: 03/11/2021Deadline: 24/11/2021

Link: Offres/Doctorant/

PhD position: Droplets in turbulence

Eindhoven University of Technology_open_position
Company profile: -The offer: In this project, the PhD student will initiate experimental investigations to generate and track micron-sized droplets in a turbulent airflow. The setup used for this investigation is a football-shaped turbulence chamber with a diameter of about 1 m available within the Fluids and Flow group at TU/e. Loudspeakers agitate turbulence inside; a spinning-disc generator provides the droplets. Laser illumination of a small central volume of a few cm3 allows for 3D position tracking of droplets from four viewing angles with fast cameras. These cameras are adequate for the reconstruction of droplet trajectories in 3D (via 3D PTV algorithms) and quantification of clustering, but also suitable for sufficient statistical accuracy of droplet tracking and the resolution of droplet velocities. In previous studies it was observed that hydrodynamic interactions might promote droplet collisions. This experimental investigation will therefore focus on the effect of hydrodynamic interaction on the droplet velocity, and how this will affect droplet collisions and coalescence.Requirement: We are looking for enthusiastic PhD-students with an excellent background in fluid dynamics and turbulence, and depending on the project a strong background in experimental measurement techniques or affinity with computational physics. You have an MSc in (applied) physics or mechanical engineering. Knowledge of statistical mechanics is an asset. As an ideal candidate, you should be able to work in a team. You also have good written and oral communication skills in English.Organization / University: Eindhoven University of TechnologyPosted date: -Deadline: 21/11/2021

Link: phd-positions-in-the-field-of-turbulence

PhD position: Shaping turbulence with smart particles: experiments with magnetic beads

Eindhoven University of Technology_open_position
Company profile: -The offer: In this project, the PhD candidate will investigate experimentally the role of magnetic particles in turbulence at low and high densities with the possibility to steer the turbulence via external (time-dependent) magnetic fields. An experimental setup for the generation of homogeneous isotropic turbulence (French washing machine) will be designed. It should satisfy certain constraints such as optical access for Particle Image Velocimetry (PIV) and 3D Particle Tracking Velocimetry (3D PTV) applications and facilities for the production of magnetic fields to control the dynamics of the particles. Measurement of magnetic particle aggregates as well as the statistics of turbulence will be made possible as function of turbulence and magnetic field strength. Typical size of the magnetic beads will be similar to the dissipative scale of turbulence; aggregates can form strings as long as the integral scale. Strong interaction and exchange of data with parallel PhD projects on chiral particles in turbulence and numerical studies of such systems is anticipated.Requirement: We are looking for enthusiastic PhD-students with an excellent background in fluid dynamics and turbulence, and depending on the project a strong background in experimental measurement techniques or affinity with computational physics. You have an MSc in (applied) physics or mechanical engineering. Knowledge of statistical mechanics is an asset. As an ideal candidate, you should be able to work in a team. You also have good written and oral communication skills in English.Organization / University: Eindhoven University of TechnologyPosted date: -Deadline: 21/11/2021

Link: phd-positions-in-the-field-of-turbulence

PhD position: Leaky Ocean Eddies

University of East Anglia_PhD_position
Company profile: -The offer: Mesoscale eddies are ubiquitous and most energetic features of the global ocean circulation. They play a key role in transporting and redistributing climatically important properties such as mass, heat, carbon and nutrients. However, the mechanisms by which ocean eddies transport these properties are still under debate. At the centre of this debate is the unknown ability of ocean eddies to trap and translate fluid, i.e., how leaky are ocean eddies? The aim of this project is to examine the ocean eddy trapping efficiency using both ocean models and satellite observations, identify the key parameters and physical processes, and determine the dominant mechanism(s) of eddy transport in the ocean.You will join a productive research team of physical oceanographers and fluid dynamists at UEA and the University of Oxford. You will identify and track eddy structures in both idealized and realistic ocean models as well as in satellite observations using popular Eulerian methods that are based on instantaneous information of the flow field. You will use Lagrangian particles to quantify the leakiness of these Eulerian eddies in material transport and determine ocean eddy trapping efficiency. You will identify Lagrangian coherent structures (LCS) in simple and complex turbulent flows and diagnose lateral transport by these Lagrangian structures. You will determine the dominant mechanism by which ocean eddies transport properties and develop methods to improve eddy parameterization schemes used in current Earth System Models.This project will provide you with a thorough training in numerical modelling, fluid dynamics and data analysis. Researchers at UEA regularly lead and take part in field campaigns and we anticipate that you will participate in an ocean research cruise to gain oceanographic observational expertise. There will also be opportunities for you to attend summer schools and visit collaborating institutions.Primary Supervisor: Dr Xiaoming ZhaiRequirement: We seek an enthusiastic candidate with strong scientific interests and self-motivation. They will have a degree in physics, mathematics, oceanography, meteorology, or climate science with good numerical skills.Organization / University: University of East AngliaPosted date: 01/11/2021Deadline: 12/01/2022

Link: postgraduate/research

PhD position: The interplay between urine flow, encrustation, and bacteria

Company profile: The ARTORG Center for Biomedical Engineering Research (University of Bern, Switzerland) has an open position for a PhD student in the Urogenital Engineering group (UGE). UGE group focuses on the development of urological devices and methods for the diagnosis and the treatment of urological disorders (e.g. kidney and ureteral stones, overactive and underactive bladder, urinary incontinence). UGE research is in close collaboration with the Department of Urology at Bern University Hospital (Prof. F. Burkhard and Prof. K. Monastyrskaya), and the Cardiovascular Engineering group of the ARTORG Center (Prof. D. Obrist). UGE is also part of the 'European Network of multidisciplinary research to Improve the Urinary Stents (ENIUS)' supported by the European Commision. Other partners of the PhD project are: Haute Ecole Arc Ingénierie, University of Oxford, and University College London.The offer: The project focuses on developing and investigating new ureteral stent designs based on innovative fluid mechanical approaches which can reduce encrustation and biofilm in stents. This effort will involve experimental investigations, theoretical analysis and simulations of the underlying fluid mechanical processes, and will require close interaction with our research partners.Requirement: Candidates for this position are expected to have the following skills and expertise:
  • MSc in Biomedical Engineering or Mechanical Engineering (or related fields)
  • Experience in experimental fluid mechanics (e.g. Particle Image Velocimetry) and/or computational fluid dynamics (e.g. Comsol, OpenFOAM)
  • Experience in microfluidics is considered a plus
  • Ability to collaborate in an interdisciplinary team of medical doctors, engineers and computational scientists
  • Good project management skills and proven academic writing skills in English The position is fully funded for four years with starting date on January 1st, 2022 (or earlier).
Organization / University: University of BernPosted date: -Deadline: 22/10/2021

Link:

https://www.jobs.apps.be.ch/offene-stellen/phd-position/

PhD position: Characterisation of flow around bivalve (Pecten maximus) shells

Aberdeen University_PhD_position
Company profile: -The offer: A number of studies have highlighted the ability of freshwater mussels to behave as so-called ecosystem engineers; actively modifying their local environment through mechanisms such as filtering and passively by modifying bed roughness. Attempts have also been made to study the near bed flow structure around these mussels at the organism scale however, the wider influence of properties such as the surface roughness of the shells remain unknown. Furthermore, similar measurements around different members of the bivalve family are lacking. In particular very little is known about the hydrodynamics of the shell of the scallop (Pecten maximus), recognisable by its distinctive ribbed texture. The aim of this project is therefore to investigate characteristics of turbulent flow around the shell of a typical scallop. The project will be experimental in nature. It is anticipated that a high resolution particle-image velocimetry (PIV) system, deployed in both field and laboratory conditions, will be used for measuring the flow.Requirement: Selection will be made on the basis of academic merit. The successful candidate should have, or expect to obtain, a UK Honours degree at 2.1 or above (or equivalent) in suitable Engineering discipline (e.g. Civil, Mechanical), or Physics. Knowledge of fluid mechanics, familiarity with MATLAB, previous laboratory experience. Highly motivated, pro-active individual with keen interest in fluid mechanics and excellent communication skills, particularly in academic writing.Organization / University: Aberdeen UniversityPosted date: 16/11/2021Deadline: -

Link: Informal inquiries can be made to Dr M Stewart (mstewart@abdn.ac.uk) with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Postgraduate Research School (pgrs-admissions@abdn.ac.uk)

PhD position: Smart particles in turbulence: study of the bulk properties

Eindhoven University of Technology_open_position
Company profile: -The offer: In this project, the PhD-candidate will investigate experimentally and numerically the role of particle shape and properties, in combination with magnetic actuation protocols, on the turbulence statistics and the bulk properties. When employing smart particles to influence turbulence statistics the aim is to achieve the largest possible effect with the smallest possible number of particles (i.e. having a strong non-linear dependency from the particle volume fraction). Moreover, we aim at exploring experimentally a large parameter space clarifying, e.g. the influence of particle size, of polydispersity, the influence of shapes of particles and of the external (magnetic) forcing protocols on the bulk properties of the turbulent flow. From a numerical point of view accurate and point-wise models, capable to embed the physics of chirality, will be developed and analytical models for chiral particles and aggregates of magnetic particles will be further validated via Immersed Boundary Methods and Stokesian Dynamics simulations with few particles and confronted with experimental datasets.Requirement: We are looking for enthusiastic PhD-students with an excellent background in fluid dynamics and turbulence, and depending on the project a strong background in experimental measurement techniques or affinity with computational physics. You have an MSc in (applied) physics or mechanical engineering. Knowledge of statistical mechanics is an asset. As an ideal candidate, you should be able to work in a team. You also have good written and oral communication skills in English.Organization / University: Eindhoven University of TechnologyPosted date: -Deadline: 21/11/2021

Link: phd-positions-in-the-field-of-turbulence

PhD position: Department of Civil Engineering

University of Sherbrooke_open_position
Company profile: The workplace is at the Faculty of Engineering at the University of Sherbrooke, with occasional travel to the USGS’s CAFRC in Massachusetts. The PhD students will work with other students and a multidisciplinary team of researchers working on the project: Prof. J. Lacey (UdeS), Dr. T. Castro-Santos (USGS), Dr. E. Goerig (Harvard University). The team brings together expertise in eco-hydraulics, experimental fluid mechanics, fish biology and biomechanics. A stipend of $21,000 CAD/year and excellent working conditions are offered (health care benefits, opportunities to attend conferences, professional development, etc). Starting date: January 10th 2022. Interested candidates are encouraged to contact by email: Prof Jay Lacey (Jay.Lacey@USherbrooke.ca). Please send a cover letter, detailed CV, 3 recommendation letters (see Faculty format*) and copies of any relevant peer-reviewed publications.The offer: The purpose of this study is to explore how turbulence and turbulence-inducing structures might further inhibit lamprey passage, while promoting passage of native fishes (i.e., selective passage). More specifically, the study will compare locomotion behaviour and performance of invasive sea lamprey and native ray-finned fishes over weir and spoiler baffles at different spacings. Flow structure will be quantified and related to the quantified fish locomotor behaviour and performance. Methodology : Laboratory experiments will be performed at the USGS, S.O. Conte Anadromous Fish Research Center (CAFRC), Massachusetts, USA and the Civil Engineering Department, Université de Sherbrooke (UdeS), Québec, Canada. Fish experiments will be conducted at both facilities where the fish will be allowed to volitionally enter and ascend a large flume lined with an attachment-inhibiting substrate and with several baffle configurations (i.e, weir and spoiler). Ascent behaviors, kinematics, and passage performance with and without baffles will be quantified using radio frequency identification (RFID) and high-speed video. Flow structure of specific geometries will be measured in detail using a stereoscopic high-frequency particle image velocimetry (sPIV) system. Open-source computation fluid dynamics (CFD) software (OpenFOAM) will be used to model flow over substrate / baffle geometries, providing additional knowledge on passage-limiting flow and turbulence characteristics.Requirement:
  • Bachelor’s degree in engineering and a master’s degree in a relevant subject: hydrotechnical engineering, fluid mechanics, fish biology or related fields.
  • Experience in laboratory experimentation, quantitative analysis methods, CFD and advanced measurement techniques such as ADV and/or PIV.
  • Experience in coding, image processing and/or fish handling are assets.
  • Peer-reviewed scientific publications.
  • English fluency is necessary. French fluency (or a desire to learn) is an asset for working and living in a francophone environment.
  • Priority will be given to American and Canadian citizens or permanent residents. International applicants can also apply, but they must be able to secure a visa to permit travel between the USA and Canada on a regular basis.
Organization / University: University of SherbrookePosted date: 27/10/2021Deadline: 24/11/2021

Email: Prof Jay Lacey (Jay.Lacey@USherbrooke.ca)

PhD position: Three-dimensional particle tracking velocimetry (3DPTV) using a camera network

Company profile: Institut Pascal, UMR 6602, is a joint interdisciplinary research and training unit of 370 people, under the threefold supervision of Université Clermont Auvergne (UCA), the CNRS and SIGMA Clermont. The CHU, University Hospital of Clermont-Ferrand, is also a partner of the laboratory.The offer: The aim of this thesis is to define the mathematical foundations for the study of airflow in large cavities, such as atrium or conference rooms, by juxtaposition of several different 3DPTV systems. First, a procedure for multi-3DPTV multi-camera calibration will be developed in order to express all particle trajectories in a common 3D coordinate system. Then, a strategy for merging particle trajectories calculated by different 3DPTV systems will be studied basing on a similarity criterion and a merging criterion, both dependent on the camera extrinsic calibration, the frame rate and on each particle 3D trajectory.Requirement: You have a Master of Science degree (at the start of the PhD) and a background in computer science and/or machine learning. Candidates with an MSc in another discipline but with good skills in programming languages, signal/image processing may also be considered. You have a strong interest for computer vision, a good knowledge of mathematics, signal or image processing, and good programming skills. Skills in GPU programming language (Cuda,...) are not mandatory but would be a real advantage . You function well in a team. You have good or excellent English and scientific writing skills. You combine a strong interest in scientific research with a desire to see your work applied in industry. Université Clermont Auvergne implements gender-neutral recruitment and selection procedures. Female candidates are especially encouraged to apply.Organization / University: Institut Pascal, UMR 6602Posted date: -Deadline: 03/09/2021Link: https://euraxess.ec.europa.eu/jobs/678766

PhD position: Two opportunities at the University of Geneva

University of Geneva PhD position
Company profile: -The offer: Funding from the Swiss National Science Foundation is available for two PhD students to begin in the spring or fall 2022 for a project targeted at the physical and numerical characterization of key size-selective tephra-sedimentation processes (namely particle aggregation and settling-driven gravitational instabilities at the base of volcanic plumes and clouds) and of their relation to plume dynamics. One sub-project aims at the physical characterization of particle aggregation and settling-driven gravitational instabilities through field observations and scaled laboratory experiments making use of state-of-the-art instrumentations (e.g. combined used of planar laser-induced fluorescence (PLIF) and particle image velocimetry (PIV), drones, weather balloons, holography). The other sub-project aims at developing a new 3D Lattice-Boltzmann plume model that is able to capture complex flow features including subsonic and transonic compressibility, gas-particle and particle-particle interactions and turbulence at multiple scales in order to better constrain the conditions that favor particle aggregation and settling-driven gravitational instabilities. A physical parameterization will also be developed for both size-selective tephra-sedimentation processes to be implemented within Volcanic Ash Transport and Dispersal Models and improve both real-time forecasting and long-term hazard assessments.Requirement: Applicants must hold, or will obtain prior to starting the project, a diploma/master degree, or an equivalent level of education, in Geology, Physics, Geophysics, Engineering, Applied Mathematics, Computer Sciences or an equivalent subject (with a taste for natural phenomena). A background in laboratory experiments and/or numerical methods and programming is advantageous. The students will be integrated in a dynamic research group and only highly motivated candidates will be considered for these positions.Organization / University: University of GenevaPosted date: -Deadline: 31/12/2021

Link: PhD-positions-2021-VolcanoRiskGroup

PhD position: Fluid dynamics of interacting flexible bio-propulsors at millimeter scales

Penn State University PhD position Fluid Dynamics
Company profile: The Environmental and Biological Fluid Mechanics (EBFM) Laboratory explores the fundamental fluid dynamics of how animals and particles interact with flow. We are particularly interested in the intermediate scales where both inertia and viscosity are important (see https://sites.psu.edu/byronlab). We are part of Penn State’s Mechanical Engineering Department, which has nearly 60 research groups across a variety of topics. EBFM lab is part of the Rainbow Engineering Network and is actively committed to fostering a diverse and inclusive environment for all affiliated researchers. Students in EBFM lab are encouraged to view science as a human enterprise and scientists as whole people.The offer: The flexibility and deformability of animal bodies and appendages is a key feature that enables high performance and efficiency in swimming and flying. However, little is known about the complex flow structures created by spatiotemporally coordinated flexible surfaces in close proximity to one another. This PhD project will combine 3D flow measurement methods, materials characterization, and experiments with living organisms to understand how flexible structures hydrodynamically interact at millimeter scales. The project is experimental; data collection will take place primarily in the laboratory and during short (1-3 week) sessions at marine field stations. Opportunities for analytical or computational research may arise over the course of the project. Experimental techniques to be used include high-speed videography, volumetric Particle Tracking Velocimetry (PTV), refractive index matching, and physical (robotic) dynamic modeling. The student will be encouraged to design and test new measurement techniques and experimental setups, further developing their understanding of cutting-edge laser diagnostics and optical flow measurement techniques.Requirement: Strong interest in organismal biology, and basic technical background in fluid dynamics, mechanics of materials, and dynamics. Undergraduate degree in engineering, physics, or a related field (MS strongly preferred). Must have past research experience (experimental strongly preferred; if your past work is entirely computational, please address this explicitly in your application). Past experience in experimental fluid dynamics research is an advantage, but not required.
Organization / University: Penn State UniversityPosted date: 09/2021Deadline: 07/10/2021

Link: https://sites.psu.edu/byronlab/

Research fellow: Fluid Mechanics

RMIT fluid mechanics open position
Company profile: RMIT is a multi-sector university of technology, design and enterprise with more than 95,000 students and 10,000 staff globally. RMIT offers postgraduate, undergraduate, vocational education and online programs to provide students with a variety of work-relevant pathways.The offer: As the Research Fellow, you will be expected to:
  • Design an experiment for a small wind tunnel, carry out flow visualisation and particle imaging velocimetry and analyse and present data.
  • Write reports, meet milestones, engage in high quality research projects to achieve success in produce high quality research outputs
  • Work with an increasing degree of autonomy as skills and experience develop.
Requirement: To be successful in this position, you'll have the Key Selection Criteria as a minimum:
  • Ability to learn new skills in multiple disciplines and to work in multi-disciplinary environments
  • Demonstrated initiative in research and problem solving
  • Emerging track record and recognition for quality research outputs which will contribute to existing Discipline and School research areas evidenced by publications, development of new research initiatives, competitive research funding, and industry links.
  • Excellent interpersonal and communications skills appropriate for interacting with higher degree by research candidates, staff and industry, together with a strong commitment to teamwork and multidisciplinary collaboration
Organization / University: RMIT University, MelbournePosted date: 08/09/2021Deadline: 22/09/2021Link: https://www.rmit.edu.au/about/schools-colleges/engineering