|
[Sponsors] |
April 22, 2014, 02:19 |
Is Inflation Nessesary?
|
#1 |
New Member
Join Date: Apr 2014
Posts: 29
Rep Power: 12 |
For practical purposes, do I need to activate "automatic inflation" during CFD runs on large ductwork models e.g. 3 meters plus in diameters, employing a layer of perforated plate?
I have run a few trial runs and that the pressure drop across a couple of meters is quite very low. I am only interested in the general gasflow profile within reasonable simulation time. If I activate inflation along the walls, this would result in significant number of elements, which could substantially increase the corresponding calculation time. Any clarifications would be highly appreciated. Thank you in advance. |
|
April 22, 2014, 06:33 |
|
#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
Good question!
Inflation layers increase the accuracy of modelling the boundary layer. If the boundary layer does not contribute much to the flow then inflation layers will not be worth the effort. I cannot directly answer your question without knowing exactly what you are modelling or what results you are looking for. But for most cases in large ducts of short length (like you seem to have) then I would not be surprised if the boundary layer is not important, so inflation layers may not be worth the effort. |
|
April 22, 2014, 08:24 |
|
#3 |
New Member
Join Date: Apr 2014
Posts: 29
Rep Power: 12 |
Hello Glenn,
Thank you for the clarification. And as usual, we are learning free lessons from your expertise. Godspeed! Will |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Total Thickness of Inflation Layer | prikeyma | CFX | 5 | August 28, 2020 03:22 |
[ANSYS Meshing] Defining total thickness for inflation. What is growth rate? | pyroknife | ANSYS Meshing & Geometry | 3 | August 14, 2013 12:36 |
Fluent diverges when using inflation layers | ziggo | FLUENT | 4 | August 9, 2013 12:11 |
Large Valve Flow Analysis - Inflation Problem | sercan85 | ANSYS Meshing & Geometry | 2 | June 1, 2010 14:02 |
Inflation | Gab | CFX | 6 | August 24, 2005 22:45 |