Print Email Facebook Twitter Added Mass Effects of Compressible and Incompressible Flows in Fluid-Structure Interaction Title Added Mass Effects of Compressible and Incompressible Flows in Fluid-Structure Interaction Author Van Brummelen, E.H. Faculty Aerospace Engineering Department Aerospace Materials & Manufacturing Date 2009-01-01 Abstract The subiteration method which forms the basic iterative procedure for solving fluid structure-interaction problems is based on a partitioning of the fluid-structure system into a fluidic part and a structural part. In fluid-structure interaction, on short time scales the fluid appears as an added mass to the structural operator, and the stability and convergence properties of the subiteration process depend significantly on the ratio of this apparent added mass to the actual structural mass. In the present paper, we establish that the added-mass effects corresponding to compressible and incompressible flows are fundamentally different. For a model problem, we show that on increasingly small time intervals, the added mass of a compressible flow is proportional to the length of the time interval, whereas the added mass of an incompressible flow approaches a constant. We then consider the implications of this difference in proportionality for the stability and convergence properties of the subiteration process, and for the stability and accuracy of loosely-coupled staggered time-integration methods. Subject fluid-structure interactionadded-mass effectcompressible and incompressible flowsubiteration To reference this document use: http://resolver.tudelft.nl/uuid:ee6e171b-e41f-4f34-bb8c-22501be69aae Publisher Delft Aerospace Computational Science ISSN 1574-6992 Source Report DACS-09-001 Part of collection Institutional Repository Document type report Rights (c) 2009 Van Brummelen, E.H. Files PDF van_Brummelen.pdf 205.06 KB Close viewer /islandora/object/uuid:ee6e171b-e41f-4f34-bb8c-22501be69aae/datastream/OBJ/view