ON SOME ASPECTS OF FLUID-STRUCTURE INTERACTION IN TWO-PHASE FLOW

被引:0
作者
Benaouicha, M. [1 ]
Astolfi, J. A. [2 ]
机构
[1] LaMSID UMR EDF CNRS CEA 8193, Lab Mecan Struct Ind & Durables, F-92141 Clamart, France
[2] Ecole Navale, BCRM Brest, IRENav EA 3634, Inst Rech, F-29240 Brest 9, France
来源
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2013, VOL 4: FLUID-STRUCTURE INTERACTION | 2014年
关键词
ADDED-MASS;
D O I
暂无
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The paper presents a theoretical model of the fluid-structure interaction effect in two-phase inviscid flow. A time-space variation of the fluid density at the interface between a fluid and a rigid section is considered. The coupled problem is then written as a Laplace equation for the pressure with a boundary condition at the fluid-structure interface depending on the acceleration, the velocity of the structure and on the rate of change of flow density. It is shown that contrary to the homogeneous flow, the added mass operator is not symmetrical and depends on the flow through fluid density variation. The model shows also an added damping operator related to the rate of change of flow density. Added damping coefficients are found to be positive or negative, indicating the possibility of instability development into the dynamics of the structure.
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页数:9
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