Premium Development of an improved divergence‐free‐condition compensated coupled framework to solve flow problems with time‐varying geometries
Chiu PaoHsiung,
Poh Hee Joo
Publication year2021
Publication title
international journal for numerical methods in fluids
Resource typeJournals
Summary In this article a coupled version of the improved divergence‐free‐condition compensated method will be proposed to simulate time‐varying geometries by direct forcing immersed boundary method. The proposed method can be seen as a quasi‐multi‐moment framework due to the fact that the momentum equations are discretized by both cell‐centered and cell‐face velocity. For simulating time‐varying geometries, a semi‐implicit iterative method is proposed for calculating the direct forcing terms. Treatments for suppressing spurious force oscillations, calculating drag/lift forces, and evaluating velocity and pressure for freshly cells will also be addressed. In order to show the applicability and accuracy, analytical as well as benchmark problems will be investigated by the present framework and compared with other numerical and experimental results.
Subject(s)benchmark (surveying) , boundary value problem , classical mechanics , computational fluid dynamics , computer science , data mining , discretization , divergence (linguistics) , drag , flow (mathematics) , forcing (mathematics) , geodesy , geology , lift (data mining) , linguistics , mathematical analysis , mathematics , mechanics , moment (physics) , philosophy , physics , spurious relationship , statistics
SCImago Journal Rank0.938

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