Body in a Fluid

VikramR · September 20, 2012, 13:52

Hello CFX users, I am modeling a reactor in which there is a solid body , a fluid in side this solid and another solid body inside this fluid.
My problem is that the simulation does not seem to be recognizing the body inside the fluid, in the final results I just see the body but no flow is influenced by this body. Please help me.

hamed.majeed · September 22, 2012, 11:40

Hi Vikram,
Your problem is an FSI. Formulate the problem based on that. You need to first select a proper FSI method. I believe are trying to find the behavior of control rods in the reactor fluid. What is it you are trying to achieve? this will affect the FSI method used.

Thank you

Regards
Hamed

VikramR · September 22, 2012, 13:21

Thank you very much for the reply.
Actually there is a rotating disc inside the reactor. I figured out a way to deal with it.
I am not very sure of what FSI is, can you send me a reliable link where I can find out more about that?

Thanks in advance,
Vikram

hamed.majeed · September 22, 2012, 15:32

Hi,
There is also a CEL function for time denoted by "t". Recall CEL function for time.
In ANSYS search for article 15.2.12.
Reference:
// Reference Guide // 15. Variables in ANSYS CFX // 15.2. List of Field Variables // 15.2.12. Variables and Predefined Expressions Available in CEL Expressions

September 20, 2012, 13:52	Body in a Fluid	#1
VikramR New Member Vikram Reddy Join Date: Jun 2012 Posts: 13 Rep Power: 14	Hello CFX users, I am modeling a reactor in which there is a solid body , a fluid in side this solid and another solid body inside this fluid. My problem is that the simulation does not seem to be recognizing the body inside the fluid, in the final results I just see the body but no flow is influenced by this body. Please help me.

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September 22, 2012, 11:40		#2
hamed.majeed Senior Member Hamed Abdul Majeed Join Date: May 2012 Location: New Orleans, LA, US Posts: 147 Rep Power: 14	Hi Vikram, Your problem is an FSI. Formulate the problem based on that. You need to first select a proper FSI method. I believe are trying to find the behavior of control rods in the reactor fluid. What is it you are trying to achieve? this will affect the FSI method used. Thank you Regards Hamed

September 22, 2012, 13:21		#3
VikramR New Member Vikram Reddy Join Date: Jun 2012 Posts: 13 Rep Power: 14	Thank you very much for the reply. Actually there is a rotating disc inside the reactor. I figured out a way to deal with it. I am not very sure of what FSI is, can you send me a reliable link where I can find out more about that? Thanks in advance, Vikram

September 22, 2012, 15:32		#4
hamed.majeed Senior Member Hamed Abdul Majeed Join Date: May 2012 Location: New Orleans, LA, US Posts: 147 Rep Power: 14	Hi, There is also a CEL function for time denoted by "t". Recall CEL function for time. In ANSYS search for article 15.2.12. Reference: // Reference Guide // 15. Variables in ANSYS CFX // 15.2. List of Field Variables // 15.2.12. Variables and Predefined Expressions Available in CEL Expressions