Space Points Reduction Method for Grid Deforming Base on Radial Basis Functions

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (10) : 141-145.

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Space Points Reduction Method for Grid Deforming Base on Radial Basis Functions

Xie Liang1, Xu Min1, Zhang Bin1 ,An Xiao ming1

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Abstract

In the recent years, grid deforming method based on Radial Basis Functions(RBF) has been accepted widely because of many advantages. However, for volume mesh deformation driven by surface motion, the RBF system can become impractical for large meshes due to both the large number of surface (control) points and the large number of volume points. To improve efficiency, the reduction of surface points has been focus on recently. But no body has considered how to reduce the number of volume points. The algorithm for space points reduction which based on multi-level interpolation was developed. The key point of this method is setting the error of the last step as the object of the current step, and restricting interpolation space gradually. The algorithm has been proved efficient and robust by the deforming grid of naca0012 airfoil and ONERA-M6 wing.

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Radial Basis Functions(RBFs) / grid deforming / data reduction

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Xie Liang;Xu Min;Zhang Bin;An Xiao ming. Space Points Reduction Method for Grid Deforming Base on Radial Basis Functions[J]. Journal of Vibration and Shock, 2013, 32(10): 141-145