Comparative Analysis of the Arbitrary Mesh Interface (AMI), Generalized Grid Interface (GGI) and Overset Methods for Dynamic Body Motions in OpenFOAM

摘要

This paper focuses on the comparative performance of the well known Arbitrary Mesh Interface(AMI) and Generalized Grid Interface (GGI) methods in OpenFOAM and our in-house Overset grid tool (OPErA), all of which are used to compute the flow past moving bodies.To evaluate the performance of both approaches, the flow past a spinning cylinder at Re 50000 and a canonical wind turbine are considered. Force coefficients, mass conservation and parallel performance of the above approaches are illustrated. It is seen that the overset approach is able to reproduce similar results compared to AMI and GGI approaches with acceptable parallel overhead. While the GGI method is the fastest among the three, the parallel efficiency of all the methods fall in the same range.