Comparison modern of turbulence models for the 2D NASA wall-mounted hump separated flow problem

Abstract

The study was conducted to compare the results obtained using different turbulence models in the 2D NASA wall-mounted hump separated flow problem. The standard one-parameter turbulence model SA, twoparameter turbulence model SST and three-parameter turbulence model v2- f were used in this work using the Comsol Multiphysics 6.1 software package. To compare the simulation results, experimental data from the NASA TMR database were used. The results obtained were subjected to careful analysis, which revealed differences in the conclusions obtained using different turbulence models, despite the unique formulation of the problem. From the analysis of the results obtained, it follows that the SST model demonstrates a closer agreement with the experimental data compared to the SA and v2-f models. In particular, the flow rates and Reynolds stress obtained using the SST model showed better agreement with the experimental data. Thus, our work highlights the importance of selecting an appropriate turbulence model in numerical simulations of turbulent flows. The results obtained are an important contribution to the field of numerical modeling of turbulent phenomena and can be used in engineering practice and scientific research for further developments and improvements.

Keywords

• navier–stokes equations
• separated flow
• sst model
• sа model
• v2-f model
• comsol multiphysics
• nasa