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Numerical solutions of the reaction-diffusion equation: An integral equation method using the variational iteration method

机译:反应扩散方程的数值解:使用变分迭代法的积分方程法

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Purpose - The purpose of this paper is to introduce variational iteration method (VIM) to construct equivalent integral equations for initial-boundary value problems of nonlinear partial differential equations. The Lagrange multipliers become the integral kernels. Design/methodology/approach - Using the discrete numerical integral formula, the general way is given to solve the famous reaction-diffusion equation numerically. Findings - With the given explicit solution, the results show the conveniences of the general numerical schemes and numerical simulation of the reaction-diffusion is finally presented in the cases of various coefficients. Originality/value - The method avoids the treatment of the time derivative as that in the classical finite difference method and the VIM is introduced to construct equivalent integral equations for initial-boundary value problems of nonlinear partial differential equations.
机译:目的-本文的目的是引入变分迭代方法(VIM)来构造非线性偏微分方程初边值问题的等效积分方程。拉格朗日乘数成为整数。设计/方法/方法-使用离散数值积分公式,给出了用数字方法求解著名的反应扩散方程的一般方法。结果-通过给定的明确解,结果表明了通用数值方案的便利性,并且在各种系数的情况下,最终给出了反应扩散的数值模拟。独创性/价值-该方法避免了经典有限差分法中对时间导数的处理,并且引入了VIM来构造非线性偏微分方程初边值问题的等价积分方程。

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