| 液固对流相变问题的焓式有限元法 |
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| 引用本文： | 林建国,赖国璋.液固对流相变问题的焓式有限元法[J].力学学报,1993,25(1):123-128. |
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| 作者姓名： | 林建国 赖国璋 |
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| 作者单位： | 大连理工大学海岸与近海工程国家重点实验室 |
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| 摘 要： | 本文基于焓的对流扩散方程,提出一种求解具有糊状区液固相变对流传热问题的有限元方法,避免了通常采用温度对流扩散方程进行数值求解所带来的许多困难,对问题的解决更加自然、简便。算例表明,本文提出的方法是有效且可行的。
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| 关 键 词： | 焓 对流传热 相变 有限元 液固相变 |
FINITE ELEMENT METHOD BASED ON ENTHALPY FORMULATION OF CONVECTION-DIFFUSION FOR LIQUID-SOLID PHASE CHANGE PROBLEMS |
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| Lin Jianguo Lai Guozhang.FINITE ELEMENT METHOD BASED ON ENTHALPY FORMULATION OF CONVECTION-DIFFUSION FOR LIQUID-SOLID PHASE CHANGE PROBLEMS[J].chinese journal of theoretical and applied mechanics,1993,25(1):123-128. |
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| Authors: | Lin Jianguo Lai Guozhang |
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| Abstract: | A finite element method based on enthalpy formulation of convection-diffusion is developed for numerical solution of liquid-solid phase change problems. It avoids many difficulties which will appear when temperature formulation be used. The basic feature of the proposed method lies in its naturality and the simplicity. The test problems of freezing in a thermal cavity (planar and axisymmetrial problems) under natural convection are used to demonstrate the reliability and the efficiency of this method. |
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| Keywords: | enthalpy mushy region convect heat transfer FEM phase change |
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