# How to create a tank which partially filled with fluid?

 Register Blogs Members List Search Today's Posts Mark Forums Read

February 13, 2013, 06:30
#41
New Member

Join Date: Jan 2013
Posts: 21
Rep Power: 4
Quote:
 Originally Posted by RodriguezFatz Now, what was the problem?
here is the region( horizontal inlet) where the viscosity ratio is more than 1e5. How can i improve the mesh quality of that specific area?
Attached Images
 img3.jpg (63.5 KB, 7 views)

February 13, 2013, 07:46
#42
Senior Member

Philipp
Join Date: Jun 2011
Location: Germany
Posts: 1,097
Rep Power: 16
Quote:
 Originally Posted by ORYON here is the region( horizontal inlet) where the viscosity ratio is more than 1e5. How can i improve the mesh quality of that specific area?
Ok, some thoughts:
1) Do you really need the small inlet pipe? This is numerically painful, because the length (and therefore also timescale) of the pipe is much smaller than the one of the tank. Can't you just imprint an inlet surface to the pipe wall and use this little surface as an inlet?

2)I wouldn't use a prism layer at the tank wall. You normally use them, when the flux is parallel to the wall (such as in pipes, at wings,...). Then, the main advantage is, that you can resolve the flow in one direction (perpendicual to the wall) and not too much in the others. Also some numerical errors cancel, when the flux is perpendicular to the prism surfaces. This is not the case in your setup: the flux is not strong along the tank surface! I don't see any sense in a refinement there. A refinement at the inlet and the region where the inlet flow flows along would be good!
__________________
The skeleton ran out of shampoo in the shower.

 February 14, 2013, 15:34 semi circular flow #43 Member   niru Join Date: Apr 2012 Posts: 52 Rep Power: 5 I have an orifice in the ground from where liquid pool starts coming. The liquid pool is supposed to spread in a semicircular direction. How to specify flow direction for this condition? In the normal cartesian coordinate system the pool is to spread in negative and positive y direction and in positive x direction alone. I am not able to specify (+1 & -1 for y axis) . Is there a way to do it?

 March 14, 2013, 15:27 reg LNG material properties #44 Member   niru Join Date: Apr 2012 Posts: 52 Rep Power: 5 Can you tell how the properties (density , latent heat , boiling point) that are varying with temp were given as input in CFX. What type of material was chosen (pure substance,mixture , refrigerant?)

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post prasanth FLUENT 5 July 24, 2013 17:12 Mishar FLUENT 0 January 25, 2005 04:05 Ajay FLUENT 9 March 29, 2004 09:14 mujahid FLUENT 1 February 19, 2004 07:36 Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 03:17.