Learning Forum

[jhur]

Hi!

 

I'm modelling pipe flow through a porous media in 2D axisymmetric model using Fluent.

Fluid is flowing through the porous media in the pipe with inlet temperature of 290 and initial temperate of 300. Pipe wall temperature is initially 320. heat flows from the pipe wall to the porous zone. 

I set the fluid zone to porous zone and non-equilibrium condition.

The problem is that the porous media is not thermally connected to the pipe wall. When i set the heat transfer coefficient between the fluid and porous media to '0'. the temperature of porous media doesn't change which implies that the heat from the pipe wall does not transferred to the porous media directly. 

In order to show that the porous media increase heat transfer from the solid wall to the fluid by increasing heat transfer area, i wish to model the boundary such that the heat from the wall is also transferred to the porous media too. 

Does anyone have any idea regarding this problem?

So the heat seems to be transferred to the fluid only. The heat from the pipe wall does not transfer to the porous media. how can i adjust  the boundary between the porous zone and the pipe wall so that the porous media is also thermally connected to the pipe wall?

[Rob]

Have you tried setting a more sensible HTC between the fluid and the porous media? 

[jhur]

Hi rwoolhou!

Thank you for the reply.

Which HTC do you mean? HTC between the pipe wall and the porous media?

[jhur]

I have added a image for better understanding of my problem

[Rob]

You mention in the OP that you set the fluid-porous body HTC to zero: what happens if you set it to a more sensible value?