Iteration Process of JFNK Method and Physical Constraints
Iteration Process of JFNK Method and Physical Constraints
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发表时间：
2012
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通讯作者：
An Hengbin;Mo Ze-yao
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作者：
An Hengbin;Mo Ze-yao
通过在迭代过程中引入物理约束，对Jacobian-free Newton-Krylov（JFNK）方法进行了分析和改进，使改进的JFNK方法在迭代过程中始终满足物理约束，避免了非物理现象，特别是对于二维3-T能量方程，该方法不存在负温度，提高了JFNK方法的鲁棒性.
Jacobian-free Newton-Krylov(JFNK) method is analyzed and improved by using physical constraints in iteration.Consequently,physical constraints are always satisfied in iteration process of the improved JFNK method.Non-physical phenomenon is avoided.In particular,there is no negative temperature as the method is used for 2-D 3-T energy equations.Robustness of JFNK method is improved.