dolfinx-tutorial

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nate-sime

Add one-sided integration example as example of custom integration

2

```python # Computing a onesided integral over an interior facet with consistent orientation # Enabled by: https://github.com/FEniCS/dolfinx/pull/2269 # Copyright 2023 Jørgen S. Dokken # SPDX: MIT import dolfinx import numpy...

jorgensd

Add singular Poisson

1

Minimal example ```python # Copyright (C) 2023 Jørgen S. Dokken # # Solve a singular Poisson problem with a null-space # # SPDX-License-Identifier: MIT from dolfinx import mesh, fem, io...

jorgensd

Gather all data on one process, as shown in: https://fenicsproject.discourse.group/t/how-to-collect-the-global-mesh-without-writing-a-file/12445/4?u=dokken ```python # Copyright (C) 2023 Jørgen S. Dokken # # SPDX-License-Identifier: MIT # # Code to plot mesh with pyvista...

jorgensd

Ref: https://fenicsproject.discourse.group/t/mixed-formulation-of-poisson-problem-in-dolfinx/10149/7?u=dokken and https://fenicsproject.org/olddocs/dolfin/1.5.0/python/demo/documented/mixed-poisson/python/documentation.html

jorgensd

Example for DG poisson

9

Hi @jorgensd Are there plans to add a demo for solving the poisson equation using the DG method? Thanks! Rem

RemDelaporteMathurin

Can use `ufl.reconstruct` to increase the element degree: ```python def error_L2(uh, u_ex, degree_raise=3): # Create higher order function space ufl_el = uh.function_space.ufl_element() new_el = ufl_el.reconstruct(degree=degree_raise+ufl_el.degree()) mesh = uh.function_space.mesh W =...

jorgensd

Issue on page /chapter1/fundamentals_code.html

5

My operating system is Ubuntu 22.04 in WSL for Windows 11. When I run the code, there are two points that need attention. First, `pyvista.start_xvfb()` should be deleted. I tried...

OsbertWang

Repeated variable name in Hyperelasticity demo

4

Hyperelasticity demo uses F as deformation gradient and then again as the left hand side of the nonlinear variational problem. While the code works fine; not sure how fem.petsc.NonlinearProblem(F, u,...

bibekanandadatta

I am trying to build the Docker image with the Dockerfile in the docker/ directory. There are some problems, and I am still working on them. It works now.

shaoyaoqian