Postdoc: Numerical models for heat and mass fluxes in complex flows
deadline : 26/11/2022
Norwegian University of Science and Technology
#postdoc #numerical models #complex flows
The Department of Energy and Process Engineering at the Norwegian University of Science and Technology has a vacancy for a postdoctoral position in “Numerical models for heat and mass fluxes in complex flows”.
NTNU is a broad-based university with a technical-scientific profile and a focus in professional education. The university is located in three cities with headquarters in Trondheim. At NTNU, 9,000 employees and 42,000 students work to create knowledge for a better world.
One/two post-doctoral researcher positions are available at the Department of Energy and Process Engineering, in the Thermofluids research group.
To meet the rising global energy demand in a sustainable manner, one way is to improve phase change heat transfer, which has therefore been the object of increasing engineering research over the last years. Phase change is the most efficient way to increase heat transfer since latent heat is typically much large than sensible heat. The recent development of micro and nanotechnologies has made the high-resolution control of surface texture and chemistry feasible over different length scales. These complex surfaces may significantly affect several multiphase processes of high practical interest, e.g., evaporation, boiling, condensation and freezing. In a field where experiments are complex, a deep understanding of the mechanisms underlying wetting and compressible multiphase flows with phase change, may therefore be achieved through high-fidelity numerical simulations.
The purpose of the project is to attain unprecedented accuracy and efficiency in modelling heat and mass transfer in fluid flows, including interactions with solid walls and porous matrices. These objectives will be pursued by devising algorithms to simulate contact line motion, wetting and phase change within one or more of the different interface tracking methods already available within the group. The objective is also to be able to efficiently run the codes on modern supercomputers, exploiting thousands of cores and using modern accelerated architectures, such as GPUs. The aim is to extend existing tools for multiscale numerical simulations of heat and mass flux in laminar and turbulent flows.
Profile and skills
- A PhD in engineering, applied mathematics, physics or equivalent. Documentation of the obtained doctoral degree must be presented before you can take up the position. If you can document that the PhD thesis has been submitted, your application can be assessed even if you have not yet defended your dissertation
- Strong background in fundamental or applied fluid mechanics
- Previous peer-reviewed publications in well regarded journals
- Programming skills in Fortran, C, Python, or similar packages
- Experience with state-of-the-art large-scale parallel fluid mechanics simulations
- Excellent written and oral English language skills
- Experience with visualisation tools (e.g. Paraview, Visit)
- Experience conducting simulations of multiphase flows (e.g., direct numerical simulations of turbulent emulsions, bubbles/droplets in turbulence, wetting on complex walls)
- Experience with implementation on GPUs machines, e.g., CUDA fortran
- Experience mentoring other PhD or Masters students
Temporary contract, 4 years
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