Master/Project Thesis: Wall-modeled LES and Machine Learning

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Flat Boundary Layer (Bergman et. al., Fund. Heat and Mass Trans.2011)

Background:

The Institute of Fluid Mechanics is involved in a European project called CEEC (https://ceec-coe.eu/).  CEEC’s ambition is to enable the use of exascale computers for key computational fluid dynamics (CFD) applications and demonstrate their capabilities through key light-house cases. The light-house case we are working on is the flow around a merchant ship hull, i.e., the Japanese Bulk Carrier. For this well-known benchmark case, the Reynolds numbers are expected in a range that even with the help of exascale computing wall-modeling is required for the LES simulations to somehow “bridge” the wall closest layers. The objective of this task is to work on wall-modeling, either algebraic wall models or wall-models enriched by machine learning, implement these approaches into our flow solver Neko and validate the developments basing on particular test cases.

 Specific tasks:

  • Literature study on the topics of wall-models and machine-learning enriched wall-models
  • Implement algebraic and / or machine-learning enriched models into Neko
  • Setting up of validation test cases and perform simulations
  • Data analysis and reporting of the results

Requirements:

  • Interest in turbulent flows, LES, wall-models and coding
  • Successfully taken part in NMTFD1+2 or CFD1+2 respectively
  • Independence working style

Starting date: immediately

Advisor: