On the Development of Viscous Solvers for Computation of Transient Flows in Turbomachines

Alexander Wiedermann, Kazuyoshi Miyagawa, Tsuyoshi Eguchi
1999 International Journal of Rotating Machinery  
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 they+-distance of the first grid line away from the wall. For the solution of
more » ... 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 complete turbomachinery stage. A 3-D example will be discussed and those parameters evaluated which are important for actual blading design.
doi:10.1155/s1023621x99000226 fatcat:34rextipwjd5lcgrqc5m6gzhy4