2404 Fluid-Structure Coupling Analysis using SPH Method

In this paper, a partitioned coupling analysis system is developed for a numerical simulation of 3-dimensional fluid–structure interaction (FSI) problems, adopting an incompressible smoothed particle hydrodynamics (SPH) method for fluid dynamics involving free surface flow and the finite element method (FEM) for structural dynamics. A coupling analysis of a particle-based method and a grid-based method has been investigated. However, most of these are developed as a function-specific application software, and therefore lack versatility. Hence, to save cost in software development and maintenance, the open source software is utilized. Especially, a general-purpose finite element analysis system, named ADVENTURE, and a general-purpose coupling analysis platform, named REVOCAP_Coupler, are employed. Moreover, techniques of an interface marker on fluid–structure boundaries and a dummy mesh for fluid analysis domain are adopted to solve the problem that the REVOCAP_Coupler performs to unify two or more grid-based method codes. To verify a developed system, the dam break problem with an elastic obstacle is demonstrated, and the result is compared with the results calculated by the other methods.

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W271002 Massively parallel computing method for fluid-structure coupling analysis and its application to predicting the primary stage of thrombus formation

The Proceedings of Mechanical Engineering Congress Japan ◽

10.1299/jsmemecj.2014._w271002-1 ◽

2014 ◽

Vol 2014 (0) ◽

pp. _W271002-1-_W271002-4

Author(s):

Kazuyasu SUGIYAMA

Keyword(s):

Parallel Computing ◽

Thrombus Formation ◽

Massively Parallel ◽

Coupling Analysis ◽

Primary Stage ◽

Fluid Structure ◽

Massively Parallel Computing ◽

Computing Method

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Fluid Structure Coupling Analysis of Ultrasonic Traveling Wave Driving

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.562-564.1724 ◽

2012 ◽

Vol 562-564 ◽

pp. 1724-1727

Author(s):

Chang Zhi Wei ◽

Shou Shui Wei ◽

Ya Tao Zhang ◽

Chong Zhang

Keyword(s):

Fluid Velocity ◽

Element Model ◽

Travelling Wave ◽

Fluid Viscosity ◽

Driving Voltage ◽

Driving Frequency ◽

Coupling Analysis ◽

Fluid Structure ◽

Resonance Frequencies ◽

Driving Model

An ultrasonic travelling wave micro-fluid driving model was presented. Principle of the driving model was introduced and finite element model was developed. Resonance frequencies were predicted by modal analysis. Fluid structure coupling analysis was done to observe the transient fluid velocity. The time-averaged velocity was calculated. Influences of driving voltage, driving frequency and fluid viscosity on time-averaged velocity were taken into accounted. The results indicate that the time-averaged velocity profile is asymmetric parabola and is influenced by the driving frequency obviously. The maximum time-averaged velocity decreases with the increasing of fluid viscosity and reflux appears when the fluid viscosity reaches to 0.07Pa·s.

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