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Postdoc & PhD on Preferential orientation of anisotropic particles in Turbulence, Vienna University of Technology, Austria

Du 1 janvier 2022 au 31 décembre 2023

Starting as soon as possible
Site actualite
Institute of Fluid Mechanics and Heat Transfer Research
Unit of Prof. A. Soldati
Contact : alfredo.soldati@tuwien.ac.at

 

The prediction of preferential orientation of anisotropic particles in turbulent flows is of importance because of the many implications it can bear for industria

Post-doctoral researcher

The prediction of preferential orientation of anisotropic particles in turbulent flows is of importance because of the many implications it can bear for industrial and environmental applications. In this project, we aim at performing both experimental and numerical investigations on the orientation and rotation rate of the non-axisymmetric fibers in free surface turbulent flow. The outcome of this study will direct impact on several applications such as micro-fiber pollution and papermaking. The aim is to investigate the dynamics of non-axisymmetric fibers in free surface channel flow. Fibres orientation, rotation rate, tumbling, and spinning will be analyzed, in different geometrical zones of the open channel flow. The shape of the fibers and flow boundary conditions is chosen to match environmental flow conditions, such as transport of microfibers.

Methods and tools

Experiments will be performed in the TU Wien Turbulent Channel Flow in open-channel flow configuration. Measurements will consist of time-resolved tomographic reconstructions (MART, software used: DaVis 10). Data will be processed with in-house codes (MATLAB) to discriminate and track the fibers. Finally, statistics on their velocity, orientation and rotation rates will be produced.

Please refer to Alipour et al., JFM, 916 A3 (2021) and Alipour et al., JFM, 934, A18 (2022) for further details on the experimental facility and numerical methods employed.
The candidate is also expected to work on experiments on Hele-Shaw flows, bubble dynamics and wind tunnel.

Job Description and task:

Starting time: as soon as possible
40 h/week, Salary according to 
https://www.fwf.ac.at/en/research-funding/personnel-costs Participation in research, teaching and courses management, administration of the research group. Preparation of and participation in scientific publications and dissemination.
Supervision of student theses (PhD, Master and Bachelor’s).

Profile:

Doctoral degree / Phd in Experimental Fluid Mechanics or Aerodynamics. Experiences in particle tracking methods/optical experimental methods. Teamwork capabilities

Inquires: email to alfredo.soldati@tuwien.ac.at