• Title/Summary/Keyword: Compactly Supported Radial Basis Function

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A Study on the Effective Interpolation Methods to the Fluid-Structure Interaction Analysis for Large-Scale Structure (거대 구조물의 유체-구조 연계 해석을 위한 효과적인 보간기법에 대한 연구)

  • Lee, Ki-Du;Lee, Young-Shin;Kim, Dong-Soo;Lee, Dae-Yearl
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.37 no.5
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    • pp.433-441
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    • 2009
  • Generally, the events in nature have multi-disciplinary characteristics. To solve this problems, these days loosely coupled methods are widely applied because of advantage of solvers which are already developed and well proved. Those solvers use different mesh system, so transformation and mapping of data are vital in the field of fluid-structure interaction(FSI). In this paper, the interpolation of deformation which is used globally and compactly supported radial basis functions(RBF), and mapping of force which use principle of virtual work are examined for computing time and accuracy to compare ability with simple 3-D problem. As the results, interpolation scheme of compactly supported radial basis functions are useful to interpolation and mapping for large-scale airplane in FSI with a k-dimensional tree(kd-tree) which is a space-partitioning data structure for organizing points in a k-dimensional space.

Fluid-Structure Interaction Analysis of High Aspect Ratio Wing for the Prediction of Aero-elasticity (유체-구조 연계 해석기법을 이용한 세장비가 큰 비행체 날개의 공탄성 해석)

  • Lee, Ki-Du;Lee, Young-Shin;Lee, Dae-Yearl;Lee, In-Won
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.38 no.6
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    • pp.547-556
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    • 2010
  • For the safety of aircraft and accuracy of bombs, many companies have researched the new concept of adaptive kit to flying-bombs. For the long distance flying, it's normally used deployed high-aspect ratio wing because of limited volume. The probabilities of large elastic deformation and flutter are increased due to decreased stiffness of high-aspect ratio wing. In this paper, computational fluid dynamics and computational structure dynamics interaction methodology are applied for prediction of aerodynamic characteristics. FLUENT and ABAQUS are used to calculate fluid and structural dynamics. Code-bridge was made base on the compactly supported radial basis function to execute interpolation and mapping. There are some differences between rigid body and fluid-structure interaction analysis which are results of aerodynamics characteristics due to structural deformation. Small successive vibration was observed by interaction.