Title: Numerical investigation of turbomachinery flow fields using different turbulence models

Authors: S.T. Tan, E.Y.K. Ng

Addresses: FerroTec Cooperation (s) Pte Ltd, Blk 21, Kallang Ave., 105-173, Kellamy Basin Industry Estate, 339412, Singapore. ' School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore

Abstract: In this paper, numerical predictions for four cascade flow fields are performed using a Q3D Navier-Stokes solver with a simple mixing length turbulence model and two more advanced transport equation approaches. Studies show that mixing length is simple and cheap but crude, while more sophisticated transport approaches are more physical, but more expensive. The results are compared with well documented experimental results. It is concluded that the model with more transport equations predicts better result as it provides the effect of upstream history into the velocity scale.

Keywords: computational fluid dynamics; CFD; energy transport; Navier-Stokes equations; turbomachinery; turbulence modelling; numerical simulation; turblent flow.

DOI: 10.1504/IJCAT.1998.062208

International Journal of Computer Applications in Technology, 1998 Vol.11 No.3/4/5, pp.363 - 368

Published online: 01 Jun 2014 *

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