自由分子領域における蒸発のモーメント法：時間積分に対するセンシティビティー

概要

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A moment method of the log-normal distribution is applied to evaporation of particles by introducing correction factors calculated from the error function. In the free-molecular regime, the improved moment method is tested for the evaporation and the sensitivity to time-integration scheme is examined. For the forward and backward Euler solutions, small time step size (<1 s for dv/dt = -10-10v2/3, where v is the particle volume and t is time) is required to accurately simulate the evaporation, since the difference from the exact one becomes larger with increasing the time step size. For large time step size (∼10 s) , the fourth order Runge-Kutta and simple exponential solutions agree well with the exact solution of the evaporation in the free molecular regime.
日本エアロゾル学会の論文
2007-03-20