scholarly journals PARALLEL COMPUTING OF FLUID-STRUCTURE COUPLED ANALYSIS USING SUPG/PSPG AND ENRICHED FREE MESH METHOD

Author(s):  
Shinsuke NAGAOKA ◽  
Yasushi NAKABAYASHI ◽  
Genki YAGAWA
2011 ◽  
Vol 462-463 ◽  
pp. 1238-1243
Author(s):  
Shinsuke Nagaoka ◽  
Yasushi Nakabayashi ◽  
Genki Yagawa

Almost all the phenomena occurring around us are the coupled phenomena. In the field of numerical analysis, it is difficult to perform coupled analysis. Because, there are a lot of problems and these problems make coupled analysis difficult, so we have to resolve these problems to perform analyses with considering the coupling effect. At present, as the popularity of numerical analysis rising along advancement in computer performance, demand of numerical analyses with incorporating coupling effects will further increase. In this research, we propose a new fluid-structure coupled analysis method using SUPG/PSPG stabilized FEM and Enriched Free Mesh Method to eliminate a lot of problems occurring in the process of coupled analysis. As the feature of our proposed method, linear triangular elements are only used in the analysis.


2014 ◽  
Vol 90 ◽  
pp. 288-293 ◽  
Author(s):  
Shinsuke Nagaoka ◽  
Yasushi Nakagabashi ◽  
Genki Yagawa

2021 ◽  
Vol 111 ◽  
pp. 106521
Author(s):  
Hao Zhou ◽  
Gang Wang ◽  
Haris Hameed Mian ◽  
Mengzhu Qin

2004 ◽  
Vol 28 (5) ◽  
pp. 425-441 ◽  
Author(s):  
Toshimitsu Fujisawa ◽  
Satoshi Ito ◽  
Masakazu Inaba ◽  
Genki Yagawa

Author(s):  
Alexander Shamanskiy ◽  
Bernd Simeon

AbstractAn important ingredient of any moving-mesh method for fluid-structure interaction (FSI) problems is the mesh moving technique (MMT) used to adapt the computational mesh in the moving fluid domain. An ideal MMT is computationally inexpensive, can handle large mesh motions without inverting mesh elements and can sustain an FSI simulation for extensive periods of time without irreversibly distorting the mesh. Here we compare several commonly used MMTs which are based on the solution of elliptic partial differential equations, including harmonic extension, bi-harmonic extension and techniques based on the equations of linear elasticity. Moreover, we propose a novel MMT which utilizes ideas from continuation methods to efficiently solve the equations of nonlinear elasticity and proves to be robust even when the mesh undergoes extreme motions. In addition to that, we study how each MMT behaves when combined with the mesh-Jacobian-based stiffening. Finally, we evaluate the performance of different MMTs on a popular two-dimensional FSI benchmark reproduced by using an isogeometric partitioned solver with strong coupling.


2005 ◽  
Vol 2005.18 (0) ◽  
pp. 191-192
Author(s):  
Gaku HASHIMOTO ◽  
Hidetomo YAMAMOTO ◽  
Takahiko TANAHASHI

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