|
[Sponsors] |
September 9, 2010, 00:05 |
prism element on interface
|
#1 |
Member
jaikrishna
Join Date: Mar 2009
Location: chennai
Posts: 56
Rep Power: 17 |
prism element creation on fluid-fluid interface is good practice or not?
pls explain. |
|
September 9, 2010, 04:36 |
|
#2 |
Senior Member
AB
Join Date: Sep 2009
Location: France
Posts: 323
Rep Power: 21 |
I'm not sure I have well understood your question. Anyway :
Prism elements are mainly used to better capture the boundary layer. If it is your goal, you don't need prism elements on the fluid interface. |
|
September 21, 2010, 17:46 |
finely capture gradients normal to the surface
|
#3 |
Senior Member
Simon Pereira
Join Date: Mar 2009
Location: Ann Arbor, MI
Posts: 2,663
Blog Entries: 1
Rep Power: 47 |
More generally, Prism elements are used when ever you want to finely capture a result gradient in one direction, but not others. The prisms allow you to refine in the direction normal to the surface without needing to refine along the surface (efficient use of mesh).
Do you expect gradients normal to your fluid/fluid interface? Do you want to resolve these closely? For instance, if it was a free surface between the water and air, prisms could help to capture that wave motion. Another possibility may be heat transfer between the fluids... So yes, if you want to capture a normal gradient, prisms are a good idea. If you don't expect anything, don't bother with prisms. |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wind turbine simulation | Saturn | CFX | 58 | July 3, 2020 02:13 |
RPM in Wind Turbine | Pankaj | CFX | 9 | November 23, 2009 05:05 |
ICEM 5.1 to CFX Prism Element | ashish | CFX | 1 | April 6, 2005 19:32 |
Convective Heat Transfer - Heat Exchanger | Mark | CFX | 6 | November 15, 2004 16:55 |
Replace periodic by inlet-outlet pair | lego | CFX | 3 | November 5, 2002 21:09 |