A NEW LOCAL-CORRELATION BASED ZERO-EQUATION TRANSITION MODEL
Date4th Aug 2021
Time06:00 PM
Venue Google Meet
PAST EVENT
Details
In this work, the local correlation-based one-equation transition model (Menter, F.R., Smirnov, P.E., Liu, T. and Avancha, R., A one-equation local correlation-based transition model, Flow, Turbulence and Combustion, 95(4), pp. 583-619, 2015.) is transformed into a zero-equation transition model. The new model provides an attractive choice in terms of quick implementation of a transition model in existing turbulent flow solvers with Menter’s shear-stress transport (SST) turbulence model, as it only introduces three extra source terms in the transport equation of turbulent kinetic energy. The model is validated against a set of benchmark flat-plate test cases: T3 series and SK. Additionaly, the developed model is applied to subsonic flows past different airfoils: Aerospatiale A-airfoil (Re=2.1 million), E387 (Re=0.2 million), S809 (Re=2 million), T106A (Re=51.8 thousand), V103 (Re=138.5 thousand), and finally applied to a 3D test case of transonic flow past the DLR-F5 wing (Re=1.5 million). Results show that the proposed model produces similar transition prediction as the one-equation transition model, with a reduced computational effort in most cases. The proposed model, however, shows sensitivity to the initialization used for low turbulence intensity cases, an analysis for which is also presented. The computations are performed with an in-house finite-volume solver for compressible turbulent flows on block-structured grids.
Speakers
JATINDER PAL SINGH SANDHU
Aerospace Engineering

