凝固計算における温度回復法の固相率計算法の改良〔熱工学, 内燃機関, 動力など〕

概要

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One of the methods of phase change simulation is the 'Temperature Recovering Method'. There are two main difficulties in practical application. The first is the explicit nature of the method. The second is the slow convergence of the solidification ratio. The author proposes a method to remedy the above difficulties, which consists of two procedures. Firstly, the solidification range is clustered into a discrete variable. A solidification ratio is sorted within a cluster as an integer variable. Secondly, the source term related to the change of the latent heat is reformulated into an implicit form by the 'Numerical Linearization Method' as previously proposed by the author. The benchmark test cases show that : (1) The convergence is faster, even for large latent heat cases, than the usual method. (2) The stability is independent of time increment.
一般社団法人日本機械学会の論文
1998-04-25