How to get Streamlines to interact.?

stephen__white · April 12, 2011, 14:47

Hi All,

Quick and hopefully pretty simple question.

I am simulating a model where I want two different fluids (Air and Fuel) to flow through seperate pipes and then join, where one pipe meets the other. I understand from the Ansys help this is a Multiphase problem and so have set it up in the ways described within the tutorials.

The problem I am having is that when postprocessing I want to look at how the flows mix together, but when plotting their individual streamlines it seems that when the two flows meet, they do not interact with each other and that no streamlines ever overlap. I have tried many different combinations of fluids, some of which have been the same material, but I cannot get the streamlines to cross over and interact with one another.

Is there anyway in which I can fix this problem? Or is there another method of doing this?

Any help would be much appreciated.

Steve

joey2007 · April 12, 2011, 15:43

Do you have liquid fuel?

stephen__white · April 12, 2011, 18:00

Yes It is a fluid fuel I am using, however I tried using a gas instead and the same problem occurs.

Thanks

Steve

April 12, 2011, 14:47	How to get Streamlines to interact.?	#1
stephen__white New Member stephen white Join Date: Feb 2011 Posts: 5 Rep Power: 15	Hi All, Quick and hopefully pretty simple question. I am simulating a model where I want two different fluids (Air and Fuel) to flow through seperate pipes and then join, where one pipe meets the other. I understand from the Ansys help this is a Multiphase problem and so have set it up in the ways described within the tutorials. The problem I am having is that when postprocessing I want to look at how the flows mix together, but when plotting their individual streamlines it seems that when the two flows meet, they do not interact with each other and that no streamlines ever overlap. I have tried many different combinations of fluids, some of which have been the same material, but I cannot get the streamlines to cross over and interact with one another. Is there anyway in which I can fix this problem? Or is there another method of doing this? Any help would be much appreciated. Steve

April 12, 2011, 15:43		#2
joey2007 Senior Member Join Date: Mar 2009 Location: Europe Posts: 169 Rep Power: 17	Do you have liquid fuel? __________________ - - - - - ------------------------------------------------------------------------ Please do not forget: I am not paid for answering your questions. Thousands of issues can cause a division by zero. Please do not capture a thread, with the argument: "I have the same issue ...."

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[OpenFOAM] generation of streamlines: is it possible to have an area source as the seed type?	alkochevsky	ParaView	14	March 19, 2021 05:09
Streamlines under Moving reference frame; Spiral streamline from Tecplot	aiqch	Tecplot	2	October 30, 2009 00:27
Custom streamlines - only 2 velocity components	bernarde	STAR-CCM+	5	August 24, 2009 08:18
streamlines	Matthias	CFX	3	April 13, 2005 12:52
STAR-CD, moving grid and streamlines	Mohamed GUEROUACHE	Main CFD Forum	1	September 13, 1999 14:33

April 12, 2011, 18:00		#3
stephen__white New Member stephen white Join Date: Feb 2011 Posts: 5 Rep Power: 15	Yes It is a fluid fuel I am using, however I tried using a gas instead and the same problem occurs. Thanks Steve