Learning Forum

[hassam]

Hello 

I am trying to simulate heat transfer to a spiral structure with fluid flow. I am using steady state heat transfer. i have made the spiral structure on the outside cylinder.  There is a problem with the model. When I try to run it it gives a limitations error because i am using a student version.

I have tried to make a command file but I dont know if its correct since i am not familar with APDL codes

the data which needs to be transmitted through this command file is 

Fluid116

Density= 1000kg/m3

Inlet Velocity= 1kg/s

Inlet temperature=20 C

I dont know about the convective heat transfer coefficient. i can assume the worst case scenario. 

I need to know how to define the inlet mass flow though APDL coding

and how to assign the convective heat transfer coefficient say 50 W/mm2C

I have  attached the model for you to see. Please take a look at the command file in the model. 

The cylinder is open to atmosphere. The inside cylinder temperature is 200C-

 

[Rob]

Are you trying to solve the mechanical (APDL) part or the fluid flow (CFD) part? 

[hassam]

I don't want to solve this problem using CFD because it will make it complicated. So I am using only steady-state thermal analysis to solve the problem.

You can see the attached model. Purpose is to find out the heat transfer capacity of the fluid flowing through the spiral structure within the outer cylinder. The heat is generated from with in the cylinders. This is why  i have used a line element for the spiral structure.

I hope this answers your question. Awaiting your reply.

[Karthik Remella]

Hello,

I'm moving your question to the structural mechanics thread so you get more visibility on this. Folks who monitor this thread are generally are working with Fluids products.

I hope this helps.

Thank you.

Best Regards,

Karthik