A FIXED GRID NUMERICAL MODELING METHODOLOGY FOR CONVECTION DIFFUSION MUSHY REGION PHASE-CHANGE PROBLEMS
A FIXED GRID NUMERICAL MODELING METHODOLOGY FOR CONVECTION DIFFUSION MUSHY REGION PHASE-CHANGE PROBLEMS
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DOI：
10.1016/0017-9310(87)90317-6
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发表时间：
1987-08-01
影响因子：
5.2
通讯作者：
PRAKASH, C
中科院分区：
文献类型：
--
作者：
VOLLER, VR;PRAKASH, C
发展了一种基于焓公式的固定网格方法，用于对流扩散控制的糊状区相变问题的数值求解。所提出的方法的基本特征在于在表示的潜热的演变，并在固-液糊状区的流动，通过适当选择的来源。在确定这些来源的方法上有完全的自由，因此可以模拟各种相变情况。以自然对流条件下热腔中的冻结问题为例，说明了该方法的应用。
An enthalpy formulation based fixed grid methodology is developed for the numerical solution of convection-diffusion controlled mushy region phase-change problems. The basic feature of the proposed method lies in the representation of the latent heat of evolution, and of the flow in the solid-liquid mushy zone, by suitably chosen sources. There is complete freedom within the methodology for the definition of such sources so that a variety of phase-change situations can be modelled. A test problem of freezing in a thermal cavity under natural convection is used to demonstrate an application of the method.