Happy New Year!
I'm attempting to save multiple DMPlexes to a single HDF5 file. During my
solution, I make modification to the DMPlex and would like to track and store
these changes as the solution progresses. Currently, I the program writes the
DMPlex to the HDF5 file the first time I call
Good Afternoon,
I am currently working on an Inviscid Navier-Stokes problem and would like to
apply DM_BC_NATURAL boundary conditions to my domain. Looking through the
example files on petsc.org, I noticed that in almost all cases there are the
following series of calls.
] Storing Values using a Triplet for using later
On Wed, Nov 8, 2023 at 2:40 PM Brandon Denton via petsc-users
mailto:petsc-users@mcs.anl.gov>> wrote:
Good Afternoon,
Is there a structure within PETSc that allows storage of a value using a triple
similar to PetscHMapIJSet with the key using a
Good Afternoon,
Is there a structure within PETSc that allows storage of a value using a triple
similar to PetscHMapIJSet with the key using a struct{PetscScalar i, j, k;}?
I'm trying to access mesh information (the shape function coefficients I will
calculate prior to their use) who's values
How exactly does the aux data work? What is typically available there? Is it
something the user can populate?
From: Matthew Knepley
Sent: Wednesday, October 11, 2023 8:07 PM
To: Brandon Denton
Cc: Jed Brown ; petsc-users
Subject: Re: [petsc-users] FEM
By natural coordinates, I am referring to the reference element coordinates.
Usually these are represented as (xi, eta, zeta) in the literature.
Yes. I would like to have the Jacobian and the derivatives of the map available
within PetscDSSetResidual() f0 and f1 functions. I believe
Thank you for the discussion.
Are we agreed then that the derivatives of the natural coordinates are required
for the described approach? If so, is this something PETSc can currently do
within the point-wise residual functions?
Matt - Thank you for the command line option for the 2nd
have an example of the approach you mentioned, could you please send it
over so I can review it?
On Oct 11, 2023 6:02 AM, Matthew Knepley wrote:
On Tue, Oct 10, 2023 at 9:34 PM Brandon Denton via petsc-users
mailto:petsc-users@mcs.anl.gov>> wrote:
Good Evening,
I am looking to implement
/latest/examples/fluids/
https://github.com/CEED/libCEED/blob/main/examples/fluids/qfunctions/stabilization.h#L76
On Tue, Oct 10, 2023, at 7:34 PM, Brandon Denton via petsc-users wrote:
Good Evening,
I am looking to implement a form of Navier-Stokes with SUPG Stabilization and
shock capturing
Good Evening,
I am looking to implement a form of Navier-Stokes with SUPG Stabilization and
shock capturing using PETSc's FEM infrastructure. In this implementation, I
need access to the cell's shape function gradients and natural coordinate
gradients for calculations within the point-wise
. It
runs for me but I have not checked the answer.
Thanks,
Matt
On Wed, Jun 7, 2023 at 11:05 AM Brandon Denton via petsc-users
mailto:petsc-users@mcs.anl.gov>> wrote:
Good Morning,
I'm trying to verify that the CAD -> PETSc/DMPlex methods I've developed can be
used for FEM
Good Morning,
I'm trying to verify that the CAD -> PETSc/DMPlex methods I've developed
can be used for FEM analyses using PETSc. Attached is my current attempt
where I import a CAD STEP file to create a volumetric tetrahedral
discretization (DMPlex), designate boundary condition points using
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