Ansys Fluent transient pipe flow

[arehman1289]

Hello,

I am doing a relatively simple problem, but i can't initialise it.

I have hot water at 400K moving inside a copper pipe at 300K. I would like to see the time it takes for the copper pipe's temperature to increase to 400. However I can't seem to initialise the temperature of the pipe, as in all the plots its temperature starts at 400 at t = 0s.

I simply have a hollow pipe filled with a fluid. In the boundry conditions of the pipe I thermally couple it with the fluid. In standard initialisation I tell the solver to compute from pipe wall at 300K, but no avail.

Can anyone please help. Its a basic problem but has taken me days now.

Thanks
Abdur

 

[Achy47]

rahman

Hello Abdurrahman,

Thank you for reaching out with your question. It sounds like you are trying to simulate the heat transfer between the hot water and the copper pipe. In order to accurately model this process, you will need to consider the initial conditions of both the hot water and the copper pipe.

For the hot water, the initial temperature of 400K can be set as the initial condition. However, for the copper pipe, you will need to specify the initial temperature as well. This can be done by adjusting the boundary conditions or by explicitly setting the initial temperature in the solver.

I would recommend checking the input parameters and boundary conditions to ensure that the initial temperature of the copper pipe is set correctly. It may also be helpful to consult with a heat transfer expert or refer to relevant literature on this type of problem.

I hope this helps and wish you success in solving your problem.