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题名: The local RBF collocation method for solving the double-diffusive natural convection in fluid-saturated porous media
作者: Chia-Ming Fan
Chih-Shuan Chien
Hsin-Fang Chan
Chia-Lin Chiu
贡献者: 國立臺灣海洋大學:河海工程學系
关键词: Local RBF collocation method
Exponentially convergent scalar homotopy algorithm
Double-diffusive natural convection
Meshless method
日期: 2013-02
上传时间: 2018-10-19T01:39:33Z
出版者: International Journal of Heat and Mass Transfer
摘要: Abstract: The local RBF (radial basis function) collocation method (LRBFCM) combined with the exponentially convergent scalar homotopy algorithm (ECSHA) is proposed to analyze the double-diffusive natural convection in parallelogrammic enclosures filled with fluid-saturated porous media. The LRBFCM, free from mesh and numerical quadrature, is proposed to efficiently and accurately analyze the double-diffusive natural convection. In comparing with other meshless methods, the concept of localization in LRBFCM can avoid the ill-conditioned and full matrix. By enforcing the satisfactions of governing equation at every interior node and boundary condition at every boundary node, a system of nonlinear algebraic equations (NAEs) will be formed by LRBFCM. Thus, the ECSHA is adopted to efficiently resolve the system of NAEs. The efficiency of the evolutionary process in solving NAEs is greatly improved since the calculation of the inverse of Jacobian matrix can be avoided. Two numerical examples will be provided to demonstrate the ability and accuracy of the proposed meshless scheme.
關聯: 57(2) pp.500-503
显示于类别:[河海工程學系] 期刊論文


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