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The Solution of Two-Phase Inverse Stefan Problem Based on a Hybrid Method with Optimization

机译:基于优化混合算法的两相Stefan逆问题求解

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摘要

The two-phase Stefan problem is widely used in industrial field. This paper focuses on solving the two-phase inverse Stefan problem when the interface moving is unknown, which is more realistic from the practical point of view. With the help of optimization method, the paper presents a hybrid method which combines the homotopy perturbation method with the improved Adomian decomposition method to solve this problem. Simulation experiment demonstrates the validity of this method. Optimization method plays a very important role in this paper, so we propose a modified spectral DY conjugate gradient method. And the convergence of this method is given. Simulation experiment illustrates the effectiveness of this modified spectral DY conjugate gradient method.
机译:两阶段的Stefan问题被广泛应用于工业领域。本文着重解决界面移动未知时的两阶段逆Stefan问题,从实际的角度来看更为现实。借助优化方法,提出了一种混合方法,该方法将同伦摄动方法与改进的Adomian分解方法相结合来解决此问题。仿真实验证明了该方法的有效性。优化方法在本文中起着非常重要的作用,因此我们提出了一种改进的光谱DY共轭梯度法。并给出了该方法的收敛性。仿真实验说明了这种改进的光谱DY共轭梯度法的有效性。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第10期|319054.1-319054.13|共13页
  • 作者单位

    Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Liaoning, Peoples R China.;

    Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Liaoning, Peoples R China.;

    Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Liaoning, Peoples R China.;

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