Learning Forum

[xatz]

Hello everyone,

I am trying to simulate a solid object flowing in a tube. The motion of the object is provided by the flow field. To that i would like to model heat transfer also from the solid to the fluid (cooling). I have managed to model the motion as a hallow body in fluent only (but can't transfer heat because it is hollow eg. falling box tutorial) and in two way fsi. I am stuck as to what i should do to model heat transfer. Any ideas? Any help would be greatly appreaciated

[Rob]

Rather than model a hollow object include a solid region with a material type. That'll heat up based on temperature etc.  I think you can model it in much the same way, but you'll need to make sure the solid bit moves too. 

[1829116]

Hi Robert Woolhouse,

Thank you for your comment but can you please clarify: How exactly do you make sure the solid is moving? Do you set Solid motion for the solid cell zone or it should be done in a different way?

I have a similar problem as user xatz. I am modeling an air oven that heats moving steel tubes in a steel tube factory. I modeled the geometry to include the airflow region of the oven with air inlet and outlet and modeled the steel tube as a hollow region at first and set motion to the walls using dynamic mesh. I used a UDF for the tube walls motion and set deformation for the air part. I also made sure that the tube is always in contact with the air part throughout its movement. The model worked well. 

But like User XATZ, I was not able to do any heat transfer analyses. So I am following your advice and including the steel tube as a solid body. I will use the same udf to make its walls move but how exactly I make the solid part move? 

Thanks 

Hadi

 

 

 

[1829116]

Any answer for my question?