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借助Matlab软件,用蒙特卡洛方法对圆截面直角弯管在分子流态下的传输几率进行了模拟计算。通过数学方法实现对气体分子的虚拟约束和跟踪。本文先通过模拟最简单的圆直管道传输几率,并与Clausing、Dushman方法进行比较,验证了该方法的正确性和建模的合理性,进而对于圆截面直角弯管的传输几率进行了模拟计算,将模拟结果与两种等效算法比较得出:在分子流下计算圆截面直角弯管的传输几率时,Davis的等效方法较传统的等效方法更为合理。
With Matlab software, Monte Carlo method was used to simulate the probability of transmission of a rectangular cross-section elbow tube under molecular flow. Through mathematical methods to achieve the gas molecules of the virtual constraints and tracking. In this paper, by simulating the simplest probability of round straight pipeline transmission and comparing with Clausing and Dushman methods, the correctness of the method and the rationality of modeling are verified, and then the transmission probability of right-angle elbow with circular section is simulated , The simulation results are compared with two equivalent algorithms: Davis’s equivalent method is more reasonable than the traditional equivalent method when calculating the transfer probability of a rectangular cross-section elbow under molecular flow.