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1 TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
1 Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

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Numerical simulation of 3D flow in VKI-Genoa turbine cascade including laminar-turbulent transition

Yerschov S., Derevyanko A., Yakovlev V., Gryzun M.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2016

Vol. 20, No 1

43--61

This study presents a numerical simulation of a 3D viscous flow in the VKI-Genoa cascade taking into account the laminar-turbulent transition. The numerical simulation is performed using the Reynolds-averaged Navier-Stokes equations and the two-equation k-ω SST turbulence model. The algebraic Production Term Modification model is used for modeling the laminar-turbulent transition. Computations of both fully turbulent and transitional flows are carried out. The Mach number contours, the turbulence kinetic energy, the entropy function as well as the limiting streamlines are presented. Our numerical results demonstrate the influence of the laminar-turbulent transition on the secondary flow pattern. The comparison between the present computational results and the existing experimental and numerical data shows that the proposed approach reflects sufficiently the physics of the laminar-turbulent transition in turbine cascades.

The Development of new CFD Solver for 3D Turbomachinery Flow Computations

Yershov S., Yakovlev V., Derevyanko A., Gryzun M., Kozyrets D.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

2012

nr 141

15-24

The concept of the new CFD solver for the 3D turbomachinery flow simulation using the RANS equations is considered. The governing equations are supplemented with the k-ω SST turbulence model. The realisability constraints and the special boundary conditions for adverse pressure gradient flows are shown to be important. An improved numerical technique is suggested to increase efficiency and robustness of the computational procedure. Numerical results for selected test cases are presented. Screenshots of the developed software are shown.