{"id":388253,"date":"2024-10-05T09:58:07","date_gmt":"2024-10-05T09:58:07","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/coupling-two-fluent-simulations-with-system-coupling\/"},"modified":"2026-07-06T13:36:34","modified_gmt":"2026-07-06T13:36:34","slug":"coupling-two-fluent-simulations-with-system-coupling","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/coupling-two-fluent-simulations-with-system-coupling\/","title":{"rendered":"Coupling two Fluent Simulations with System Coupling"},"content":{"rendered":"

<p>Hi,<br><br>I’m using Fluent to solve a transpiration cooling problem. Basically, I have two domains (see figure for clarity)<\/em>:<br>1) Hot gas domain: channel flow with hot air<br>2) Porous domain: rectangular domain in which a coolant is made flow through a porous media and then injected in the main flow<\/p><p>\"Figure<br><br>I need to couple the interface porous_domain – hot_gas in order to pass the temperature (of the solid part of the porous material) and fluid velocity from domain 2) to domain 1) and heat flux + pressure from domain 1) to domain 2). (Also here, see figure 2 for clarity)<\/em><\/p><p>\"\"<br><br>I’m trying to do this by using the “System Coupling” (SC) tool offered by Ansys, but I’m having some troubles:<br><br>1) SC does not support two Fluent participants in the workbench, so I’m using it from the GUI<br>2) SC does not support (probably) passing velocity and pressure as coupling variables, so now I’m running a simplified version of the project in which I exchange only the thermal quantities<br>3) Even after these considerations, after I create the cases, make the .scp files, save them in the respective folders (<acronym title=”As far as I know”>afaik<\/acronym> I need to work on a folder in which I create subdirectories where I save the .cas.h5 and the .scp files of every participant<\/em>), once I run the solve <\/strong>command the tool is stuck in “Awaiting connections from coupling participants…” status. I’ve added the participants as the manuals explain and created the coupling interfaces with the corresponding variables.<br><br>By looking online, I’ve seen that a problem on 2023 ansys versions (I’m using ANSYS 2023 R1) is that SC doesn’t start if IPV6 is enabled in your network, so I did it, but it didn’t solve the problem. It may be a license problem, but I didn’t arrive at a conclusion by looking online from this point of view.<br><br>Since this is not working, my backup plan is to couple the simulations via a Python script using pyFluent, but SC would have been easier and more straightforward to implement. But I’m also open to any suggestion concerning the coupling of the variables \"\"<br><br>I hope that the explanation is clear, I’ll appreciate a lot every piece of advice you could give me.<br><br>Thank you!<\/p><p> <\/p><p>Marco<\/p><\/p>\n","protected":false},"template":"","class_list":["post-388253","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-fluent-coupling","topic-tag-system-coupling","topic-tag-system-coupling-error","topic-tag-two-way-coupling-fluent-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t