[FLASH-USERS] Use of implicit diffusion solver with AMR

[Hansen, Eddie]

The user guide is referring to implicit magnetic diffusion. That one is not yet supported for AMR. Currently, the implicit diffusion solvers with AMR are for thermal conduction and radiation only.

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Eddie Hansen | Research Scientist
Flash Center for Computational Science
Dept. of Physics and Astronomy
University of Rochester, Rochester, NY
Cell 607-341-6126 | flash.rochester.edu
(he / him / his)
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From: flash-users <flash-users-bounces at flash.rochester.edu> on behalf of Madhav Nagori <mnagori at uncc.edu>
Sent: Wednesday, April 5, 2023 10:31:48 AM
To: flash-users at flash.rochester.edu <flash-users at flash.rochester.edu>
Subject: [FLASH-USERS] Use of implicit diffusion solver with AMR

Hello FLASH users and Development Team,

I want to use the implicit diffusion solver for some very high resolution cases of cell size 512*512*2048. For such high resolution, I want to use AMR as the uniform mesh will take months to run.

The user guide tells that the paramesh is not available to the implicit diffusion solver. Is it possible to modify the code so that I can run with AMR?

P.S: I am using mass diffusion, viscosity diffusion and thermal diffusion in my simulation. I tried using the explicit diffusion solver (Flux Based Diffusion) with AMR, but that gave wrong results. However, the implicit solver is providing the correct results.

Please let me know.

Thank You

--
Best Regards,

Madhav Nagori

PhD Candidate | Laboratory for Multiscale Computational Fluid Dynamics
Department of Mechanical Engineering and Engineering Sciences
University of North Carolina at Charlotte
Office: Duke 273, 9330 Robert D. Snyder Rd, Charlotte, NC 28262, USA
Email: mnagori at uncc.edu<mailto:mnagori at uncc.edu>
LinkedIn: www.linkedin.com/in/madhav-nagori<http://www.linkedin.com/in/madhav-nagori>
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