[Re: change temp]

i want the temperature of the system reduce for 100 times in a way that
ratio of two temperature of system in two consecutive mode be a constant
number. i mean: new temperature/old temperature = constant number(like
constant number=0.9). i want to see Phase transition.

in velocity command scale the velocity change in a way that temperature be
a fix amount. but i want temperature change like this for example: 10 , 1
, 0.1 , 0.01 ,... . i want it change multiplicative. do you have a

suggestion?

​i don't understand the question. you are not making sense here.

axel.​

untitled-[2] (3.82 KB)

i want the temperature of the system reduce for 100 times in a way that
ratio of two temperature of system in two consecutive mode be a constant
number. i mean: new temperature/old temperature = constant number(like
constant number=0.9).

​you can do that easily using a variable, either using an index variable
with a list of those temperatures or using an equal style variable using
the ramp() function. also, you can use fix viscous to do the annealing.

i want to see Phase transition.

​this is not likely to happen the way you expect it due to finite size
effects causing a significant hysteresis.

axel.​