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Re: [lammps-users] adiabatic wall
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Re: [lammps-users] adiabatic wall


From: m n <mnnfean@...16...>
Date: Thu, 30 Nov 2017 16:38:54 +0000 (UTC)

Thank you so much Eric for your reply!

On Wednesday, November 29, 2017, 5:38:42 PM CST, Eric Murphy <murphyericjames@...24...> wrote:


Might have put some confusing emphasis there.  Do not confuse freeze with frozen. Your model wall acts just like any other model wall, it has infinite mass.

Regards,
Eric Murphy
Graduate Research Assistant, Mechanical Engineering
Iowa State University


On Wed, Nov 29, 2017 at 5:33 PM, Eric Murphy <murphyericjames@...24...> wrote:
Collide a particle with your *wall of particles* (not a fix) and you should be able to find out.  Do you expect it to stop or be reflected?

Everything should be able to be deduced from this sentence in the doc.  "This command can be used to freeze certain atoms in the simulation by zeroing their force, either for running dynamics or performing an energy minimization."

Regards,
Eric Murphy
Graduate Research Assistant, Mechanical Engineering
Iowa State University


On Wed, Nov 29, 2017 at 5:11 PM, m n via lammps-users <lammps-users@...396... sourceforge.net> wrote:
Dear Lammps users,

I am trying to simulate a liquid flow between two parallel fixed walls. The walls are fixed by "fix setforce 0.0 0.0 0.0" and "velocity set 0.0 0.0 0.0". I was wondering when the walls are fixed, can I consider them as adiabatic walls or they are heat sinks with the constant temperature of zero?

Thank you in advance for your help.

Best,
Santiago

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