Numerical Simulation of Added Mass Effects on a Hydrofoil in Cavitating Flow Using Acoustic Fluid–Structure Interaction

2017 ◽  
Vol 139 (4) ◽  
pp. 041301 ◽  
Author(s):  
Xin Liu ◽  
Lingjiu Zhou ◽  
Xavier Escaler ◽  
Zhengwei Wang ◽  
Yongyao Luo ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Fluid Structure Interaction ◽  
Added Mass ◽  
Cavitating Flow ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Mass Effects ◽  
Acoustic Fluid

scholarly journals Added Mass Effects of Compressible and Incompressible Flows in Fluid-Structure Interaction

2009 ◽  
Vol 76 (2) ◽  
Author(s):  
E. H. van Brummelen
Keyword(s):  
Incompressible Flows ◽  
Fluid Structure Interaction ◽  
Added Mass ◽  
Stability And Convergence ◽  
Time Interval ◽  
Convergence Properties ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Mass Effects ◽  
The Stability

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.

Study on Similar Skills of Dynamic Model Test Concerning Fluid-Structure Interaction for Water-Conveyance Tunnel in Soft Soil

2010 ◽  
Vol 29-32 ◽  
pp. 1458-1463 ◽  
Author(s):  
Jin Yun Liu ◽  
Jian Yun Chen
Keyword(s):  
Numerical Simulation ◽  
Model Test ◽  
Structural Model ◽  
Soft Soil ◽  
Fluid Structure Interaction ◽  
Similar Relationship ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Water Conveyance ◽  
Water Conveyance Tunnel

Three basic types of similar relationship between the prototype and the model for dynamic structural model test and dynamic destructive model test were proposed in corresponding literatures. At the time the situation where various similar relationships are applicable and the technique to ensure similarity for the different goal was discussed. Here the numerical simulation of model test of water-conveyance tunnel concerning fluid-structure interaction in soft soil is studied. Based on economy and practicability of selective material for model test, the similar relationship and the technique are proposed, which are validated through the example. The results of numerical simulation show: under the specific conditions, data of the model test can completely transfer to those of the prototype by use of this type of similar skill, and get more useful information. Some new ideas are introduced to keep the similarity of the hydro-structure structures.

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