On the Development of Viscous Solvers for Computation of Transient Flows in TurbomachinesReport as inadecuate




On the Development of Viscous Solvers for Computation of Transient Flows in Turbomachines - Download this document for free, or read online. Document in PDF available to download.

International Journal of Rotating Machinery - Volume 5 1999, Issue 4, Pages 251-261

Turbomachinery Research Laboratory, Takasago Research and Development Center, Mitsubishi Heavy Industries Ltd., 2-1-1 Shinhama, Arai-cho, Takasago, Hyogo Prefecture, 676, Japan

Revised 7 July 1998

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper focuses on development and validation of a viscous solver for the computation of unsteady flows in turbomachinery blade rows and stages consisting of rotors and stators. The code has been evolved from steady-state single flow solvers developed by Wiedermann based on time-marching finite difference schemes. A two-equation eddy viscosity model is applied, and the wall boundary conditions are determined by the y+-distance of the first grid line away from the wall. For the solution of transient flow fields the original time-stepping algorithm is replaced by a time-accurate scheme.

The emphasis of the code validation will be on blade-row interaction in a completeturbomachinery stage. A 3-D example will be discussed and those parameters evaluatedwhich are important for actual blading design.





Author: Alexander Wiedermann, Kazuyoshi Miyagawa, and Tsuyoshi Eguchi

Source: https://www.hindawi.com/



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