Flow in a Pipe

kamyar · February 22, 2014, 13:00

Hi
I'm simulating the flow through a Pipe in 3d. The fluid is water. Boundary conditions are velocity inlet at the inlet, constant flux for the wall and outflow for the outlet. simulation for momentum equation works fine but it seems there is no change in temperature. temperature inside Pipe is constant and equal to temperature at inlet (300k).
Averaged nuslet number doesn't match with the experimental equations.
can anybody help me?
thanks

zombiaska · February 24, 2014, 04:02

Firstly make sure that setting up in BC you didn't made any mistake. I would suggest trying to increase heat flux. If you have 100 make it bigger like 1000 or 10000 and check if the outflow temperature will change.

kamyar · February 24, 2014, 14:38

I increased heat flux and it worked. Thank you very much.

February 22, 2014, 13:00	Flow in a Pipe	#1
kamyar New Member Join Date: Jan 2013 Posts: 17 Rep Power: 13	Hi I'm simulating the flow through a Pipe in 3d. The fluid is water. Boundary conditions are velocity inlet at the inlet, constant flux for the wall and outflow for the outlet. simulation for momentum equation works fine but it seems there is no change in temperature. temperature inside Pipe is constant and equal to temperature at inlet (300k). Averaged nuslet number doesn't match with the experimental equations. can anybody help me? thanks

February 24, 2014, 04:02		#2
zombiaska Member Simas Join Date: Mar 2012 Posts: 37 Rep Power: 14	Firstly make sure that setting up in BC you didn't made any mistake. I would suggest trying to increase heat flux. If you have 100 make it bigger like 1000 or 10000 and check if the outflow temperature will change. kamyar likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
LES transitional pipe entrance flow	hasanduz	Main CFD Forum	2	October 11, 2013 17:59
HTC in Pipe flow	subsemitonium	CFX	6	May 6, 2013 22:00
[GAMBIT] meshing in GAMBIT, a flow through a pipe having complex inflow geometry	mazhar1613	ANSYS Meshing & Geometry	1	January 11, 2012 23:18
[ASK] Flow in Corrugated Pipe with FLUENT	Primadhani	FLUENT	1	May 11, 2011 20:41
Pipe Flow	Saima	CFX	1	January 10, 2011 16:41

February 24, 2014, 14:38		#3
kamyar New Member Join Date: Jan 2013 Posts: 17 Rep Power: 13	I increased heat flux and it worked. Thank you very much.