Evaluation of an improved mixing plane interface for OpenFOAM

27th IAHR Symposium on Hydraulic Machinery and Systems

Beaudoin, M.^1 ; Nilsson, H.^2 ; Page, M.^1 ; Magnan, R.^1 ; Jasak, H.^3,4

Institut de Recherche d'Hydro-Québec (IREQ), Varennes

QC, Canada^1

Chalmers University of Technology, Gothenburg, Sweden^2

Wikki Ltd., London, United Kingdom^3

FSB, University of Zagreb, Croatia^4

关键词: Multiple-reference frames;    Periodic properties;    Plane interface;    Rotor-stator coupling;    Steady-state simulations;    Transient problems;    Validation test;    Velocity field;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/22/2/022004/pdf
DOI  :  10.1088/1755-1315/22/2/022004

来源: IOP

【 摘 要 】

A mixing plane interface provides a circumferentially averaging rotor-stator coupling interface, which is extremely useful in practical turbomachinery simulations. It allows fundamentally transient problems to be studied in steady-state, using simplified mesh components having periodic properties, and with the help of a multiple reference frames (MRF) approach. An improved version of the mixing plane interface for the community-driven version of OpenFOAM is presented. This new version of the mixing plane introduces a per- field, user-selectable mixing option for the flow fields at the interface, including the possibility to use a mass-flow averaging algorithm for the velocity field. We show that the quality of the mass-flow transfer can be improved by a proper selection of the mixing options at the interface. This paper focuses on the evaluation of the improved mixing plane interface for various steady-state simulations of incompressible flows, applied to a simple 2D validation test case, and to more complex 3D turbomachinery cases.