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A parallel moving grid multigrid method for flow simulation in rotor‐stator configurations
Author(s) -
Böhm M.,
Wechsler K.,
Schäfer M.
Publication year - 1998
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/(sici)1097-0207(19980515)42:1<175::aid-nme360>3.0.co;2-4
Subject(s) - discretization , multigrid method , finite volume method , rotor (electric) , computer science , solver , flow (mathematics) , stator , grid , mathematics , interpolation (computer graphics) , unstructured grid , computational science , partial differential equation , mathematical optimization , mechanics , geometry , mathematical analysis , mechanical engineering , physics , frame (networking) , engineering , telecommunications
A parallel multigrid finite volume solver for the prediction of unsteady flows in rotor–stator configurations using a moving‐grid technique is presented. The numerical solution procedure is based on a second‐order finite volume discretization with collocated block‐structured grids, an implicit time discretization, a pressure‐correction procedure of SIMPLE type, a non‐linear multigrid method and a grid partitioning technique for parallelization. For the handling of the rotation and the relative movement of stationary and moving parts of the configuration a splitting technique is employed, which, based on the block structuring, divides the computational domain in a stationary and a rotating part. According to this splitting, the time‐dependent flow equations are solved in a stationary and rotating frame of reference, and a special coupling procedure is used for the interfacial blocks. The method is investigated with respect to its accuracy, where special emphasis is given to the influence of different interpolation techniques of pressure‐related terms within the non‐staggered pressure‐correction scheme. As a practical application, the flow in a stirrer configuration with baffles is studied, for which also results concerning the numerical and parallel efficiency of the proposed method are given. © 1998 John Wiley & Sons, Ltd.