2004 Fiscal Year Final Research Report Summary
Novel Numerical Method for Fluid-Structure Interaction Problem.
Project/Area Number |
15560131
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Fluid engineering
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Research Institution | The University of Electro-Ccmmunications |
Principal Investigator |
KURODA Shigeaki UEC, Faculty of Electro-Communications, Professor, 電気通信学部, 教授 (70092608)
|
Co-Investigator(Kenkyū-buntansha) |
PIAO Binhu UEC, Faculty of Electro-Communications, Research Assistant, 電気通信学部, 助手 (50323879)
|
Project Period (FY) |
2003 – 2004
|
Keywords | Fluid-structure interaction / large deformation / Fluid induced vibration / CFD / Moving boundary / simultaneous solution |
Research Abstract |
The fluid-structure interaction problem is related to many practical problems, but so far it has only been analyzed for cases with comparatively small elastic deformations. To analyze the fluid-structure interaction problem for cases with large elastic deformation, we have proposed a new algorithm for simultaneously solving fluid and elastic structure, known as the "simultaneous calculation algorithm", The purpose of this study is to develop a new method for analyzing the fluid-structure interaction problem for complicated shapes having large deformations by combining the above-mentioned simultaneous calculation algorithm and the Cartesian grid with cut cell method. In the development of an analytical technique : 1 We wrote a simultaneous calculation algorithm program to solve the fluid-structure interaction problem using the finite volume method and the fractional step method. 2 The locally boundary-fitted Cartesian grid method was developed to enhance the accuracy of Cartesian grid analysis near an object. 3 A cut cell technique for the Cartesian grid method was investigated. Based on the above : 1 Since the fluid-structure interaction problem is a moving boundary problem, we first compared different methods for solving the moving boundary problem for fluids. Specifically, we analyzed flow fields around a vibrating cylinder to solve the moving boundary problem for fluids using the overset grid method, the locally boundary-fitted Cartesian grid method, and the moving boundary grid method and compared the results obtained with these methods. 2 For the flow around a group of elastically supported cylinders, the relationships between the amplitude and locus of the vibration and the flow field are analyzed. These results indicate that stable solutions for the fluid-structure interaction problem can be found for objects having complicated boundaries. 3 To apply the technique to a new field, we investigated extending the analysis to elastohydrodynamic lubrication.
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Research Products
(25 results)