A coupling algorithm with second-order accuracy for thermal fluid-structure interaction

2013 ◽  
Vol 13 (2) ◽  
pp. 84
Author(s):  
P. Pironkov ◽  
D.C. Sternel ◽  
M. Schäfer
Keyword(s):  
Fluid Structure Interaction ◽  
Second Order ◽  
Order Accuracy ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Coupling Algorithm

AC-CBS-Based Partitioned Semi-Implicit Coupling Algorithm for Fluid-Structure Interaction Using Stabilized Second-Order Pressure Scheme

2017 ◽  
Vol 21 (5) ◽  
pp. 1449-1474 ◽  
Author(s):  
Tao He ◽  
Kai Zhang ◽  
Tong Wang
Keyword(s):  
Incompressible Flows ◽  
Fluid Structure Interaction ◽  
Second Order ◽  
Splitting Scheme ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Time Stepping ◽  
Dual Time Stepping ◽  
Coupling Algorithm ◽  
Characteristic Based Split

AbstractWe analyze in this paper the pressure splitting scheme of a partitioned semi-implicit coupling algorithm for fluid-structure interaction (FSI) simulation. The semi-implicit coupling algorithm is developed on the ground of the artificial compressibility characteristic-based split (AC-CBS) scheme that serves not only for the fluid subsystem but also for the global FSI system. As the dual-time stepping procedure recommended for quasi-incompressible flows is incorporated into the implicit coupling stage, the fluctuating pressure may be unusually susceptible to the AC coefficient. Moreover, it is not trivial to devise an optimal AC formulation for pressure estimation. Instead, we consider a stabilized second-order pressure splitting scheme in the AC-CBS-based partitioned semi-implicit coupling algorithm. Computer simulation of a benchmark FSI experiment demonstrates that good agreement is exposed between the available and present data.

A Partitioned Algorithm of Dynamic Fluid-Structure Interaction for Elephant Foot Bulging of Tanks

2006 ◽  
Author(s):  
Q. Li ◽  
H. Z. Liu ◽  
Z. Zhuang ◽  
S. Yamaguchi ◽  
M. Toyoda
Keyword(s):  
Fluid Structure Interaction ◽  
Arbitrary Lagrangian Eulerian ◽  
Step Method ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Liquid Storage ◽  
Computational Mesh ◽  
Computational Fluid Dynamics Cfd ◽  
Liquid Storage Tank ◽  
Coupling Algorithm

A partitioned coupling algorithm is presented in this paper to solve the dynamic large-displacement fluid-structure interaction (DFSI) problems. In this algorithm, the program based on arbitrary Lagrangian Eulerian (ALE) and fractional two-step method is developed to calculate computational fluid dynamics (CFD) and computational mesh dynamics (CMD). ABAQUS is used to calculate computational structure dynamics (CSD). Some user subroutines are implemented into ABAQUS and the data are exchanged among CSD, CFD and CMD. Numerical results including elephant foot bulging (EFB) of the liquid storage tank are obtained under dynamic waveform.

On a Partitioned Strong Coupling Algorithm for Modeling Fluid–Structure Interaction

2015 ◽  
Vol 07 (02) ◽  
pp. 1550021 ◽  
Author(s):  
Tao He
Keyword(s):  
Finite Element ◽  
Strong Coupling ◽  
Bluff Body ◽  
Stokes Equations ◽  
Fluid Structure Interaction ◽  
Structural Equations ◽  
Mass Source ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Coupling Algorithm

This paper presents a partitioned strong coupling algorithm for fluid–structure interaction in the arbitrary Lagrangian–Eulerian finite element framework. The incompressible Navier–Stokes equations are solved by the semi-implicit characteristic-based split (CBS) scheme while the structural equations are temporally advanced by the Bathe method. The celled-based smoothed finite element method is adopted for the solution of a geometrically nonlinear solid. To update the dynamic mesh, the moving submesh approach is performed in conjunction with the ortho-semi-torsional spring analogy method. A mass source term is implanted into the pressure Poisson equation to respect the geometric conservation law for the fractional-step-type CBS fluid solver. The iterative solution is achieved by fixed-point method with Aitken's Δ2 accelerator. The proposed methodology is validated against flow-induced oscillations of a bluff body and a flexible body. The overall numerical results agree well with the available data. Some important flow phenomena have been disclosed successfully.

GHOST FLUID METHOD APPLIED TO COMPRESSIBLE MULTI-PHASE FLOWS

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1475-1478 ◽  
Author(s):  
T. G. LIU ◽  
W. F. XIE ◽  
B. C. KHOO
Keyword(s):  
Compressible Fluid ◽  
Fluid Structure Interaction ◽  
Zero Order ◽  
Liquid Interface ◽  
Ghost Fluid Method ◽  
Order Accuracy ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Multi Phase

In this work, we show that the Ghost Fluid Method (GFM) has actually zero-order accuracy if the gas-liquid interface is not in normal motion initially. The modified GFM (MGFM) is found to overcome this problem well. Examples are given to support the present analysis and conclusions obtained, and the MGFM is then applied to simulate compressible fluid-structure interaction.

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