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An efficient computational method for simulations of reaction-diffusion processes

机译:一种模拟反应扩散过程的有效计算方法

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Coupled systems of reaction-diffusion equations are usually solved using a unified time step determined by the most restrictive time scale in the system. We demonstrate in this paper that this time step could be excessively small in many situations, and discuss a more efficient time integration method that does not require linearization procedure and uses different time steps for different equations in a coupled system, depending on their respective time scales. The basic idea is to decouple the system of equations and then apply different time steps to different equations with various time scales. This will also eliminate the need for linearization. Numerical results from a test problem will be discussed to demonstrate significant improvement in computational efficiency.
机译:反应扩散方程的耦合系统通常使用统一的时间步长求解,该步长由系统中最严格的时标确定。我们在本文中证明了此时间步长在许多情况下可能会过小,并讨论了一种更有效的时间积分方法,该方法不需要线性化过程,并且根据耦合时标的各自时标,对耦合系统中的不同方程使用不同的时间步长。基本思想是解耦方程组,然后将不同的时间步长应用于具有不同时标的不同方程。这也将消除线性化的需要。将讨论来自测试问题的数值结果,以证明计算效率的显着提高。

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