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首页> 外文期刊>Journal of Computational Physics >VECTOR IMPLEMENTATION OF NONLINEAR MONTE CARLO COULOMB COLLISIONS
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VECTOR IMPLEMENTATION OF NONLINEAR MONTE CARLO COULOMB COLLISIONS

机译：非线性蒙特卡洛库仑碰撞的矢量实现

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A nonlinear Monte Carlo collision model based on Coulomb binary collisions is presented with emphasis on its efficient implementation. The presented Monte Carlo collision operator, which has a simple form, fulfills particle number, momentum, and energy conservation laws quasi-locally and is equivalent to the nonlinear Fokker-Planck operator in the limit of infinitesimally small time interval of the binary collisions. Two vectorizable algorithms are designed for its fast implementation. Drastic speedup is obtained by the algorithms on vector computers. Various test simulations regarding relaxation processes, electrical conductivity, etc. are carried out in the velocity space. The test results, which are in good agreement with theories, and timing results on vector computers show that the present collision model is practically applicable. (C) 1996 Academic Press, Inc. [References: 20]
机译：提出了一种基于库仑二进制碰撞的非线性蒙特卡洛碰撞模型，重点是其有效实现。提出的蒙特卡洛碰撞算子具有简单的形式，在局部上满足粒子数，动量和能量守恒定律，并且在二元碰撞的无穷小时间间隔的极限上等效于非线性Fokker-Planck算子。为了快速实现，设计了两种可矢量化的算法。大幅加速是通过矢量计算机上的算法获得的。在速度空间中进行了有关松弛过程，电导率等的各种测试模拟。测试结果与理论相吻合，矢量计算机上的计时结果表明，该碰撞模型是切实可行的。 （C）1996 Academic Press，Inc. [参考：20]

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