# \#multi-coupling

**URL:** https://precice.discourse.group/tag/multi-coupling/71.md

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## [Can we start two preCICE processes in the same program?](https://precice.discourse.group/t/can-we-start-two-precice-processes-in-the-same-program/2254)

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**Author:** [@zhaoxiyan](https://precice.discourse.group/u/zhaoxiyan)\
**Replies:** 3\
**Last updated:** [December 11, 2024, 1:37pm UTC](https://precice.discourse.group/t/can-we-start-two-precice-processes-in-the-same-program/2254 "2024-12-11T13:37:52Z")

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I need to do the coupling of two programs, in the transient calculation, I need to calculate the steady state to convergence, and then do the transient calculation on the basis of the steady state. I try to set up a preC…

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## [Convergence issues in multi-coupling scheme](https://precice.discourse.group/t/convergence-issues-in-multi-coupling-scheme/2009)

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**Author:** [@dibyendu](https://precice.discourse.group/u/dibyendu)\
**Replies:** 3\
**Last updated:** [July 18, 2024, 2:37pm UTC](https://precice.discourse.group/t/convergence-issues-in-multi-coupling-scheme/2009 "2024-07-18T14:37:48Z")

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Dear all, I am attempting to couple multiple regions (three regions) using a multi-coupling scheme. I have based my modifications on the existing “heat-exchange-simplified” solver. An OpenFOAM solver is employed for the…

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## [A look at compositional coupling and the hotfix v3.1.2](https://precice.discourse.group/t/a-look-at-compositional-coupling-and-the-hotfix-v3-1-2/1992)

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**Author:** [@fsimonis](https://precice.discourse.group/u/fsimonis)\
**Replies:** 0\
**Last updated:** [July 2, 2024, 12:15pm UTC](https://precice.discourse.group/t/a-look-at-compositional-coupling-and-the-hotfix-v3-1-2/1992 "2024-07-02T12:15:01Z")

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The latest hotfix release 3.1.2 tackles a major problem in a niche use case. In addition to the short release notes, we think it is worth diving deeper into this topic. What is compositional coupling? Imagine three pa…

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## [Two couplings to one interface reloaded](https://precice.discourse.group/t/two-couplings-to-one-interface-reloaded/260)

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**Author:** [@ajaust](https://precice.discourse.group/u/ajaust)\
**Replies:** 11\
**Last updated:** [September 18, 2020, 7:52pm UTC](https://precice.discourse.group/t/two-couplings-to-one-interface-reloaded/260 "2020-09-18T19:52:42Z")

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The topic is related to the thread Two couplings to one interface (mixed dimensional coupling), but it will be a bit more extensive. I also drew nicer pictures this time! Warning: This will be a long post, but with some…