Re: [sparta-users] EXT :Re: collision models

[Ramakrishnan, S. [U. (D. (Contr) <Sek...@ng...>]

Thank you, Steve.

Rama

From: Steve Plimpton <sj...@gm...>
Sent: Tuesday, November 4, 2025 3:18 PM
To: Ramakrishnan, Sekaripuram [US] (DS) (Contr) <Sek...@ng...>
Cc: spa...@li...; Gallis, Michail A <ma...@sa...>
Subject: EXT :Re: [sparta-users] collision models

I'm CCing Michael who may be able to comment on whether a mixed HS/VHS collision model makes sense
for a solid/gas particle mixture.  It sounds like you are really asking for a mixture of 3 models in one simulation:
solid/solid, gas/gas/ and solid/gas.

If it does make sense, then we could think about how to implement it.

Steve

On Sun, Oct 5, 2025 at 12:19 PM Ramakrishnan, Sekaripuram [US] (DS) (Contr) <Sek...@ng...<mailto:Sek...@ng...>> wrote:

I am wondering whether such a collision model may be used to simulate a mixture of solid and gas particles with HS model for solid particles and VHS model foe gas particles.

Rama


From: Ramakrishnan, Sekaripuram [US] (DS) (Contr) <Sek...@ng...<mailto:Sek...@ng...>>
Sent: Sunday, October 5, 2025 11:40 AM
To: spa...@li...<mailto:spa...@li...>
Subject: EXT :[sparta-users] collision models

Is there a model for collision between a hard sphere and a variable hard sphere?

Rama
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