[petsc-users] Questions on EIMEX:

[Zhang, Hong]

Hi Derek,

Sorry for the late reply.

1. The W-IMEX is used as the base method in TSEIMEX. So TSEIMEX implements 2.4b.
2. Thank you for catching the mismatch. An MR has been submitted to fix this.

Hong (Mr.)

From: petsc-users <petsc-users-bounces at mcs.anl.gov> on behalf of Derek Teaney via petsc-users <petsc-users at mcs.anl.gov>
Date: Wednesday, June 12, 2024 at 10:22 AM
To: petsc-users at mcs.anl.gov <petsc-users at mcs.anl.gov>
Subject: [petsc-users] Questions on EIMEX:
Dear All, I have a question and a comment on the TSEIMEX scheme in the TS routines. 1/ Looking at the cited reference, I see three schemes there 2. 4b, 2. 4c, 2. 4d . It is not clear which of these is being implemented. 2/ The documentation for
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Dear All,

I have a  question and a comment on the TSEIMEX scheme in the TS routines.

1/ Looking at the cited reference,  I see three schemes there 2.4b, 2.4c, 2.4d .  It is not clear which of these is being implemented.

2/ The documentation for EIMEX mixes up  F(u, udot ) and G(u) relative to the users manual. This may have been done on purpose, to
conform with the Constantinescu ref.,  but a perhaps a comment is in order.

Thanks,

Derek


------------------------------------------------------------------------
Derek Teaney
Professor
Dept. of Physics & Astronomy
Stony Brook University
Stony Brook, NY 11794-3800
Tel: (631) 632-4489
e-mail: Derek.Teaney at stonybrook.edu
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