Dr. Spalart will discuss the intricacies of turbulent flows and why we should use turbulence models as approximations instead of fully resolving the flow physics.
StartDr. Spalart discusses the basics of RANS turbulence modeling. We will introduce the theory behind RANS turbulence modeling and present some of the most common RANS turbulence models along with their implementation details.
StartThis video presents the first part of the contribution by Flexcompute to the 4th High Lift Prediction Workshop based on the Flow360 solver. The analysis of the high-lift prediction results is focused on examining RANS modeling sensitivities. This includes effects of mesh refinement and topology, turbulence modeling choices and solution initialization strategies, with the aim to provide best-practices for RANS simulations of high-lift configurations.
StartTThis video presents the second part of the contribution by Flexcompute to the 4th High Lift Prediction Workshop based on the Flow360 solver. The best-practice RANS results are analyzed in further detail and compared with DES predictions with the aim to provide conclusions of the ability of RANS to predict high-lift flows. The DES results were found to significantly improve the comparison with experimental data and showed high confidence in terms of achieving the correct answer for the right reasons.
StartIn this video we will show the differences between steady state RANS turbulence model, time accurate unsteady RANS turbulence, Large eddy simulations and Direct eddy simulation DES. We will show how RANS, LES and DES are complimentary to each other and all have their role to play in state of the art CFD. Examples will be used to demonstrate the strengths and weaknesses of each turbulence modeling and or turbulence resolving techniques.
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