# Floating point exception while using parallel-explicit coupling scheme for two different interfaces

**URL:** https://precice.discourse.group/t/floating-point-exception-while-using-parallel-explicit-coupling-scheme-for-two-different-interfaces/1944
**Category:** Official adapters and tutorials
**Tags:** openfoam, cht
**Created:** [May 30, 2024, 7:08am UTC](https://precice.discourse.group/t/floating-point-exception-while-using-parallel-explicit-coupling-scheme-for-two-different-interfaces/1944 "2024-05-30T07:08:07Z")
**Posts on this page:** 1
**Showing post:** 7

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### Author: ![dibyendu](https://yyz2.discourse-cdn.com/free1/user_avatar/precice.discourse.group/dibyendu/32/2421_2.png) [@dibyendu](https://precice.discourse.group/u/dibyendu)
#### Post date: [July 24, 2024, 5:58am UTC](https://precice.discourse.group/t/floating-point-exception-while-using-parallel-explicit-coupling-scheme-for-two-different-interfaces/1944/7 "2024-07-24T05:58:03Z")

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Dear Makis,

Thank you for your kind response. The problem I am attempting to address is analogous to the Heat Exchanger (Simplified) tutorial, with the distinction that, in my case, the intermediary fluid is also a solid. I have employed the basic type of Conjugate Heat Transfer (CHT) coupling at the interfaces. The issue I am encountering is that the system fails to converge for various combinations of thermal conductivities. I have initiated a discussion on this matter in a separate thread, which can be accessed via the following link: [Convergence Issues in Multi-Coupling Scheme](https://precice.discourse.group/t/convergence-issues-in-multi-coupling-scheme/2009).

To streamline our discourse, I suggest we consolidate our conversation into a single thread.

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_[View the full topic](https://precice.discourse.group/t/floating-point-exception-while-using-parallel-explicit-coupling-scheme-for-two-different-interfaces/1944)._