| 摘要 |
Disclosed is a method of performing a simulation by applying renormalization transformation in which a velocity distribution of grains is maintained. A renormalization transformation process is performed with respect to a granular system S which is a simulation target based on a renormalization factor ± depending on the number of renormalizations. A position vector and a momentum vector of a grain of a renormalized granular system S' are calculated by executing molecular dynamics calculation with respect to the renormalized granular system S'. An interaction potential Æ between the grains of the granular system S is expressed as Æ (r) = µf((r-r 0 )/Ã), where µ represents an interaction coefficient having a dimension of energy, f represents a non-dimensional function, r 0 and à represent parameters characterizing a grain, and r represents an inter-grain distance. When a dimensionality of a space of the granular system S is represented as d, by applying transformation laws expressed as N' =N/± d , m' =m± d , µ' =µ± d , r 0 ' =±r 0 , and Ã' =±Ã, the molecular dynamics calculation is executed based on an interaction potential of the renormalized granular system S' expressed as Æ' (r) = µ' f ((r-r 0 ')/Ã'). |
