Re: [sparta-users] [EXTERNAL] Spatially dependent surface temperature for surf_collide

[Moore, S. <st...@sa...>]

>To confirm, these features are not available in the 4/23 release version, and I'll have to get it directly from GitHub public master.

They are not available in 4/23, but we are releasing a new version today (7Mar2024 version, see https://github.com/sparta/sparta/releases/tag/7Mar2024) and it will be in this new release. We are in the middle of updating the website, will be done later today.

Stan
________________________________
From: Roshan Mathew Tom <ros...@be...>
Sent: Thursday, March 7, 2024 12:33 PM
To: Steve Plimpton <sj...@gm...>
Cc: Moore, Stan <st...@sa...>; spa...@li... <spa...@li...>
Subject: Re: [sparta-users] [EXTERNAL] Spatially dependent surface temperature for surf_collide

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Thanks a lot. Both solutions work for me.

To confirm, these features are not available in the 4/23 release version, and I'll have to get it directly from GitHub public master.

Thanks
Roshan

--
Roshan Mathew Tom | Ph.D. Candidate
Graduate Student Researcher
Computer Mechanics Laboratory
University of California Berkeley
Office: 5146 Etcheverry Hall



On Wed, Mar 6, 2024 at 9:19 PM Steve Plimpton <sj...@gm...<mailto:sj...@gm...>> wrote:
The input script Stan pointed to allows a static temperature to be defined for each surf element by
including the values in the read_surf file and assigning them to a custom per-surf vector.
The custom vector is the temperature argument to the surf_collide command.

If you want a spatially-dependent function to set the temperature (statically or time-dependent), you
can use a surf-style variable as the temperature arg to the surf_collide command.  Surf-style variables
can include the center point of each surf in their formula (or the current timestep).
See the examples/custom/in.custom.step.temp.variable script for an example.
Also see the surf_collided temp/freq keyword to set how often the surf-style variable is invoked.
The formula could also include outputs from per-surf computes, e.g. to vary the temperature depending
on the energy flux of particles to each surface element.

Steve