# Discontinuous Galerkin Stokes Problem
**URL:** https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082
**Category:** General Discussion
**Created:** [April 3, 2024, 11:38pm UTC](https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082 "2024-04-03T23:38:14Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Aubium](https://community.freefem.org/u/Aubium)
#### Post date: [April 3, 2024, 11:38pm UTC](https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082/1 "2024-04-03T23:38:14Z")
Good evening members,
I’m struggling with the implementation of an incompressible Stokes equation using Disontinuous Galerkin method. Here are my questions :
- How to write the integral on border edges ?
- How to write the projection into Pk of u\_h ? (pi\_k(u\_h)) ?
And if you have a sample, it would be of great help. Thank you !
---
### Author:  [@frederichecht](https://community.freefem.org/u/frederichecht)
#### Post date: [April 4, 2024, 4:34am UTC](https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082/2 "2024-04-04T04:34:31Z")
First read example on DG for Laplace equation
>
---
### Author:  [@Aubium](https://community.freefem.org/u/Aubium)
#### Post date: [April 4, 2024, 4:52am UTC](https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082/3 "2024-04-04T04:52:30Z")
(post deleted by author)
---
### Author:  [@LXX](https://community.freefem.org/u/LXX)
#### Post date: [May 10, 2025, 9:29am UTC](https://community.freefem.org/t/discontinuous-galerkin-stokes-problem/3082/4 "2025-05-10T09:29:02Z")
May I ask if you’ve solved it? Now I have a similar problem when calculating the order of convergence of stokes equation?