CFD Online Logo CFD Online URL
Home > Forums > FLUENT

How many RAM need to be Used?

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

LinkBack Thread Tools Display Modes
Old   March 8, 2001, 20:18
Default How many RAM need to be Used?
Posts: n/a

Who can tell me how many RAM need to be used in simulating turbomachinery flow per 100,000 cells?


  Reply With Quote

Old   March 8, 2001, 22:58
Default Re: How many RAM need to be Used?
John C. Chien
Posts: n/a
(1). There was a general formula used for some commercial codes mentioned here sometimes ago. That is one Meg Bytes of RAM for one K cells. So, in your case, it would take 100 Meg Bytes of RAM. (2). That is only an estimate. In reality, it depends on the methods you use and also the complexity of the physics. (3). You also need to include the RAM for the system part of the software in order to get it running on the computer. (4). 100,000 cells is good for a 2-D problem. For 3-D, it is not adequate in most cases anyway. (5). A 512 Meg RAM machine would be minimum. You should try to get one Giga Bytes RAM for 3-D problem.
  Reply With Quote

Old   March 12, 2001, 00:55
Default Re: How many RAM need to be Used?
Jin-Wook LEE
Posts: n/a
John's comment(1 Kbyte per one cell) is, I think, very good estimation for general case. However, for the ONLY FLOW simulation by Fluent, '1 Kbyte per one cell' is enough estimation for Fluent(I guess you are using Fluent because this is Fluent user forum).

My team engineer has an experience for the simulation of one million cell by 512Mbyte computer. We have six Our variables(p,u,v,w,k,e).

Sincerely, Jinwook

  Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Max. RAM in Flow3D Lars FLOW-3D 4 January 8, 2009 10:56
Setting up a 32bits server with more than 4gb RAM HSeldon Main CFD Forum 4 February 21, 2008 12:45
low utilization of RAM Toralf CFX 1 October 17, 2007 18:34
Increasing RAM decreases CPU time!!! Melih GULEREN FLUENT 2 April 5, 2004 06:21
Can FLUENT run under Linux with 2 Gb of RAM? Paul Gregory FLUENT 0 February 13, 2001 21:10

All times are GMT -4. The time now is 19:14.