CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > ANSYS Meshing & Geometry

[ANSYS Meshing] is my memory usage normal?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 2, 2019, 18:50
Default is my memory usage normal?
  #1
New Member
 
Join Date: Apr 2009
Posts: 24
Rep Power: 17
Renold is on a distinguished road
Hi,

I am meshing a CVD chamber with a showerhead with 13350 holes in it. To reduce the meshing complexity, I divided the showerhead and its connecting upper and lower spaces into 13350 parts and each part has an upper block, a counterbored hole and a lower block. Then I meshed one of these parts by multizone method and copy the mesh to all other parts. I am half way done and the mesh contains 57M elements. The committed memory in the windows task manager shows 186/187GB. My computer has dual Xeon silver 4110 CPU and 128G memory. Based on the memory usage increase with the parts that the mesh is copied to, the final memory usage will be about 400G. I wonder if this memory usage is normal.

Last edited by Renold; April 2, 2019 at 20:51.
Renold is offline   Reply With Quote

Old   April 9, 2019, 07:55
Default
  #2
Super Moderator
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,426
Rep Power: 49
flotus1 has a spectacular aura aboutflotus1 has a spectacular aura about
Such a high memory usage does not seem completely unreasonable given the complexity of your model.
I think you should take one step back and think about which results you want to produce. Maybe there is a different modeling approach that does not require all 13350 holes to be accurately- represented in your model.
E.g. making use of symmetries, simulating the flow through only one hole, lumping together the flow through all holes with some average quantities... just to name a few. Which one might be suitable for you depends on which results you want.
flotus1 is offline   Reply With Quote

Old   April 9, 2019, 14:09
Default
  #3
New Member
 
Join Date: Apr 2009
Posts: 24
Rep Power: 17
Renold is on a distinguished road
Quote:
Originally Posted by flotus1 View Post
Such a high memory usage does not seem completely unreasonable given the complexity of your model.
I think you should take one step back and think about which results you want to produce. Maybe there is a different modeling approach that does not require all 13350 holes to be accurately- represented in your model.
E.g. making use of symmetries, simulating the flow through only one hole, lumping together the flow through all holes with some average quantities... just to name a few. Which one might be suitable for you depends on which results you want.
Thank you for reply!
Renold is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to get normal vector to the face? Viatcheslav Kulikov FLUENT 1 August 31, 2017 03:03
Two way Fsi Problem- Non linear problem kmgraju CFX 4 April 28, 2015 11:15
Available memory VS physical memory Jasmine CFX 5 March 29, 2009 22:48
How to increase memory usage by fluent Anastasios Georgoulas FLUENT 2 December 29, 2008 05:41


All times are GMT -4. The time now is 21:17.