在fix heat 中有N 和eflux两个参数，其中eflux的单位为能量/时间，也就是说单位时间对group原子进行增/减的能量已经确定了，那为什么还有出现一个N表示每多少时间步进行一次增/减能量呢？？？？？
Heat addition/subtraction is performed every N timesteps. The eflux parameter determines the change in aggregate energy of the entire group of atoms per unit time, e.g. in eV/psec for metal units. Thus it is an "extensive" quantity, meaning its magnitude should be scaled with the number of atoms in the group. Since eflux is independent of N or the timestep, a larger value of N will add/subtract a larger amount of energy each time the fix is invoked.
上面是手册中的英文，我总是理解不透？
回复此楼
+1/500
