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Hyperbolic Heat Equation in Bar and Finite Difference Schemes of Exact Spectrum

机译:Bar和精确频谱有限差分格式中的双曲热方程

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摘要

The solutions of corresponding 1-D initial-boundary value problem and inverse problem for hyperbolic heat conduction equation are obtained numerically, using for the approach differential equations, the discretization in space applying the finite difference method and the best scheme with exact spectrum (BSES). Numerical solutions in the time are obtained by the MATLAB solver using the method of conjugate operators and the method of superposition. For finite difference approximation with central differences, strong numerical oscillations are presented, when the initial and boundary conditions are discontinuous for the problem. The method of BSES is without oscillations and this is effective way for numerical solutions.
机译:数值求解了双曲型热传导方程的一维初值问题和反问题的解,采用了逼近微分方程,应用了有限差分法在空间中进行离散化,并采用了具有精确频谱的最佳方案(BSES)。 。 MATLAB求解器使用共轭算子和叠加法获得了当时的数值解。对于具有中心差的有限差分逼近,当初始条件和边界条件对于该问题不连续时,将出现强数值振荡。 BSES方法没有振荡,这是数值解的有效方法。

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