dENSITY

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1

i’m doing a simulation on Explosive boiling over metalic plate in a cubic simulation box. I have gotten temp & pressure for evry time step as results. Could somebody please help me on how i can measure the density and plot it.

Thanks in advance.

2

i'm doing a simulation on Explosive boiling over metalic plate in a cubic
simulation box. I have gotten temp & pressure for evry time step as
results. Could somebody please help me on how i can measure the density and
plot it.

number density or mass density or any other density?

well, in any of those cases, you have to take the property of interest
and divide by the volume. you can do this in post-processing or try
writing a suitable expression using equal style variables and, if
needed, a suitable compute. please check the manual for more details
and examples.

axel.

3

i’m talking about the mass density (g/cm3) for the liquid-vapour zone . can i do it by “compute” followeed by “variable” command

4

i'm talking about the mass density (g/cm3) for the liquid-vapour zone . can
i do it by "compute" followeed by "variable" command

how the hell should *i* know what *you* are able to do?? :wink: also,
your description is very vague.
as i mentioned in the previous e-mail, study the documentation, check
if the available features in LAMMPS are suitable for your needs, make
some tests, and if not, you'll have to write some post-processing
script/tool/program.

axel.

5

doing a simulation on liquid boiling over flat plate. Now when i change the input script for switching the flat plate to a spherical nano structured surface lammps says " error in region style" . I think it is beacuse the sphere(s) over the flate plate takes a part of the liquid region. help me out in that.

regards, som .

6

three comments:

1) this e-mail has *nothing* to do with the previous discussion and
the subject line. common mailing list courtesy is to post a new
message with a *suitable* subject to start a new discussion in this
case

2) the error message you quote does not exist in LAMMPS. in general,
quote the full input of the failing command and the log output of the
affected. also mention LAMMPS version and platform you are running on.

3) you guess on the cause of the error makes no sense. more likely is
a typo of syntax error.

axel.