王冰冰, 高欣, 段庆林. 热传导的二阶一致1点积分无网格法[J]. 工程力学, 2014, 31(9): 1-6. DOI: 10.6052/j.issn.1000-4750.2013.03.0246
引用本文: 王冰冰, 高欣, 段庆林. 热传导的二阶一致1点积分无网格法[J]. 工程力学, 2014, 31(9): 1-6. DOI: 10.6052/j.issn.1000-4750.2013.03.0246
WANG Bing-bing, GAO Xin, DUAN Qing-lin. MESHFREE METHOD FOR HEAT CONDUCTION USING QUADRATIC CONSISTENT 1-POINT INTEGRATION SCHEME[J]. Engineering Mechanics, 2014, 31(9): 1-6. DOI: 10.6052/j.issn.1000-4750.2013.03.0246
Citation: WANG Bing-bing, GAO Xin, DUAN Qing-lin. MESHFREE METHOD FOR HEAT CONDUCTION USING QUADRATIC CONSISTENT 1-POINT INTEGRATION SCHEME[J]. Engineering Mechanics, 2014, 31(9): 1-6. DOI: 10.6052/j.issn.1000-4750.2013.03.0246

热传导的二阶一致1点积分无网格法

MESHFREE METHOD FOR HEAT CONDUCTION USING QUADRATIC CONSISTENT 1-POINT INTEGRATION SCHEME

  • 摘要: 将具二阶一致性的1点积分方法(Quadratically Consistent 1-point integration method,QC1)拓展到热传导问题的无网格法分析中。给出了问题的离散化公式以及积分点上的导数修正公式。与标准三角形积分方法以及已存在的仅满足线性一致性的1点积分方法相比,数值结果表明该方法可精确通过二次分片试验,且对于稳态和瞬态热传导均具有更好的精度、收敛性和计算效率。

     

    Abstract: This paper extends the quadratic consistent 1-point (QC1) integration method to the meshfree analysis of heat conduction. The discretized equation for the problem and the equation to correct the derivatives at quadrature points are given. Numerical results show that: in the comparison to the standard triangle integration method and the existing 1-point integration method which only satisfies the linear consistency, the proposed QC1 method can pass the quadratic patch test exactly and exhibits better accuracy, convergence and computational efficiency for both the static and transient heat conduction.

     

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