August 21, 2023 at 6:37 pmAmirSubscriber
Hello, I am modeling a chamber which has fluid inside it and I want to model the circulation of fluid. Flow enters the pipe (-Y direction) and passes through it where it thermally interacts with the surrounding medium underground, and it exits from the other end of the pipe (+Y direction) which is inside the chamber. This cycle repeats in atransient simulation. Which boundary conditions should i use for the entrance and the exit of the pipe?
August 22, 2023 at 10:09 amRobAnsys Employee
Probably interior. How does the system push/pull gas through the pipe?
August 22, 2023 at 1:39 pmAmirSubscriber
Thnak you Rob. In the real scenario it is going to be a fan sending gas down into the pipe. So it is gonna be interior fan BC at entrance, right?
and outflow at exit?
August 22, 2023 at 1:45 pmRobAnsys Employee
Interior at the exit, fan may be suitable for the inlet: they're not really designed to cover the whole cross section so stability may be an issue.
A (pressure) outlet is an external boundary, not useful inside the domain. Do NOT use outflow.
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