about two-phase flow in horizontal pipe

Jonathan Romero · May 28, 2011, 19:22

Hi,

My name is Jonathan:

My question is:

I'm doing work on the modeling of the flow of water into a coil of copper tubing composed of 14cm in diameter and 90 ° elbows soldiers, the coil is part of a solar concentrator and the idea is to model the behavior of the fluid to Within this, taking into consideration the direct radiation and other factors such as working pressure and temperatures.

The problem is how to model the coil with CFX, desconosco the type of fluid in the interior, in relation to the type of two-phase flow and wanted to see if I can guide the solution to this problem.

So far I have the meshing of the coil and also desconosco which is the number of nodes and elements that should be meshing.

I hope you can help me in my queries, thanks.

ghorrocks · May 29, 2011, 09:37

Are you asking how to model the boiling process? CFX support has a few examples of how to model this, I would talk to them.

Jonathan Romero · May 29, 2011, 15:11

Indeed I want to model is the process of vaporization of soft water passing inside the coil and a phase change due to the direct radiation outside desconosco whether it will in its entirety as saturated steam or a biphasic mixture, that would tell the modeling .

So far I have the meshing of the internal volume of the coil, but I do not know the number of elements and nodes required for this event, I wish you could guide me through the steps.

In advance thank you very much.

ghorrocks · May 29, 2011, 20:01

A general guide for accurate simulations is here:
http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

Also read the best practises guide in the documentation.

May 28, 2011, 19:22	about two-phase flow in horizontal pipe	#1
Jonathan Romero New Member ramses9803 Join Date: May 2011 Posts: 2 Rep Power: 0	Hi, My name is Jonathan: My question is: I'm doing work on the modeling of the flow of water into a coil of copper tubing composed of 14cm in diameter and 90 ° elbows soldiers, the coil is part of a solar concentrator and the idea is to model the behavior of the fluid to Within this, taking into consideration the direct radiation and other factors such as working pressure and temperatures. The problem is how to model the coil with CFX, desconosco the type of fluid in the interior, in relation to the type of two-phase flow and wanted to see if I can guide the solution to this problem. So far I have the meshing of the coil and also desconosco which is the number of nodes and elements that should be meshing. I hope you can help me in my queries, thanks.

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May 29, 2011, 09:37		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Are you asking how to model the boiling process? CFX support has a few examples of how to model this, I would talk to them.

May 29, 2011, 15:11		#3
Jonathan Romero New Member ramses9803 Join Date: May 2011 Posts: 2 Rep Power: 0	Indeed I want to model is the process of vaporization of soft water passing inside the coil and a phase change due to the direct radiation outside desconosco whether it will in its entirety as saturated steam or a biphasic mixture, that would tell the modeling . So far I have the meshing of the internal volume of the coil, but I do not know the number of elements and nodes required for this event, I wish you could guide me through the steps. In advance thank you very much.

May 29, 2011, 20:01		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	A general guide for accurate simulations is here: http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F Also read the best practises guide in the documentation.