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[求助] The Art of Molecular Dynamics Simulation中单位制转换的问题

这是我推出的单位转换,但算出的结果似乎有问题,不知道是不是推错了

const double boltzmann = 1.3806505e-23;//单位J/K
const double epsilon = 120.0*boltzmann;//ε单位J, LJ方程中的常数
const double sigma = 3.4e-10;//σ单位m, LJ方程中的常数
const double atom_mass = 39.95*1.6747e-27;//单位千克,39.95是氩的原子量

压强p = p'*ε/(σ^d),p为国际单位制压强,p'为该书中的单位制
扩散系数D = D'*σ/sqrt(m/ε)
密度p = (n*m*p')/(σ^d)
n为单元格中粒子数,m为粒子质量,p'为该书中单位制下的密度,ε,σ为LJ方程中的常数
d为维数
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