Application of the V2-F Turbulence Model for Flow Analysis of Turbomachinery

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 40, Issue 2, 2016, pp.75-83
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.3795/KSME-B.2016.40.2.075

Title & Authors

Application of the V2-F Turbulence Model for Flow Analysis of Turbomachinery

Park, Jae Hyeon; Sohn, Dong Kyung; Kim, Chang Hyun; Baek, Je Hyun;

Park, Jae Hyeon; Sohn, Dong Kyung; Kim, Chang Hyun; Baek, Je Hyun;

Abstract

Since a turbomachine has complex flow characteristics, which are caused by adverse pressure gradient and high speed motion, an elaborate turbulence model is needed to accurately predict the flow. Some turbulence models such as an algebraic or a two-equation eddy viscosity model have been used for in-house RANS-code, but it is difficult to obtain good result for several complex flows. In this study, Durbin's V2-F turbulence model, which has been known for better prediction for severe flow separation, is applied to T-Flow. It was validated for simple cases such as channel and compressor cascade, and its applicability to turbomachinery was shown by analyzing internal flow of a single rotor. As a result, the V2-F turbulence model shows better blade surface pressure distribution than the one-and-two equation turbulence model.

Keywords

CFD;V2-F Turbulence Model;Axial Flow Compressor;Secondary Flow;Multi-Block;

Language

Korean

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