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Pipe inside a wall - Heat transfer Problem
Posted 2025年2月1日 GMT+8 05:55 Fluid & Heat, Heat Transfer 2 Replies
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Hello everyone,
Firstly, excuse my English I am a French student.
For a school project I have to use COMSOL, but I only had an initiation course. I want to study the evolution of temperature inside an earth wall. But inside this wall there is a pipe with water flowing into it.
In first time, I use heat transfer solid and fluid. I create my wall with pipe inside (2 geometries) and I affect them materials. I set the initial wall's temperature to 20 degrees and the water to 60 degrees. But, when I simulate (in temporal) the wall's temperature still to 20 degrees like the water's temperature does not affect the wall. I don't understand why ? May I forgot something ?
Thank you for you help. I am a beginner with this software so this question can seems simple.
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Hi Florian,
There are at least two possibilities: - you somehow did not permit heat transfer between the two physics - heat transfer is happening but at a slow rate and you are not running the simulation long enough for it to be noticeable
In any case, instead of performing a full-fledged CFD simulation in the pipe, I would recommend you consider the approach illustrated by this tutorial if your license includes the optional Pipe Flow Module. That approach solves much quicker and uses much less memory. You can check whether your license includes the Pipe Flow Module by going to File > Licensed and Used Products.
Best,
Jeff
-------------------Jeff Hiller
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Hi Florian,
There are at least two possibilities: - you somehow did not permit heat transfer between the two physics - heat transfer is happening but at a slow rate and you are not running the simulation long enough for it to be noticeable
In any case, instead of performing a full-fledged CFD simulation in the pipe, I would recommend you consider the approach illustrated by this tutorial if your license includes the optional Pipe Flow Module. That approach solves much quicker and uses much less memory. You can check whether your license includes the Pipe Flow Module by going to File > Licensed and Used Products.
Best,
Jeff
Hello Jeff,
Thank you for you answer.
My simulation lasted 1 hour, tomorrow I will try for longer to see what happens. Unfortunately, I already wanted to try out the Pipe Flow module, but my school's licence does not offer it.