CFD Online Logo CFD Online URL
Home > Forums > CFX

help on memory settings in TASCflow

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

LinkBack Thread Tools Display Modes
Old   August 31, 2001, 23:42
Default help on memory settings in TASCflow
Dr C.Bhasker
Posts: n/a
To All CFX-5 TASCflow Users:

For the present, I am working with one Combined Cycle Demonstration plant component Windbox, which comprises several hundreds of nozzels with typical annulus. The geometry and grid has been generated in IDEAS-Software and when exported in TASCflow Solver using TASCU2S utility, it generated binary grid comprises 2301 grid blocks and around 6500 grid interfaces. With appropriate in memory settings in TASCbob3d, Load pre prossing is presenting the geometrical and grid information.

The Computer System using for the above problem is PIII with NT OS RAM 512 MB HDD may around 15-20 GB.

Earlier above has worked with the grid blocks of order 307 with grid interfaces 537 and for other problem 530 grid blocks and 1015 grid interfaces, with appropriate settings, the solver has worked well on the above system.

In this regard can any user from CFX-TASCflow help me out to know on memory settings or limitations of solver upto what extent one can restrict geometry and grid size of the problem on the on the above computing system.

Your email reply to this effect helps me quite lot in analysing the problem. Please cc reply to also.


Dr C.Bhasker Sr Scientific Officer CFD Group BHEL R&D Division Vikasnagar, Hyderabad-500 093 India
  Reply With Quote

Old   September 5, 2001, 05:57
Default Re: help on memory settings in TASCflow
Posts: n/a
Dear Dr Bhasker,

A thumb rule I have known is: Leave out 1 MB of memory for every 1000 grid points. Your problem does look big for me - at least the number of grids and interfaces suggest so. Unless your grid blocks are very small(few hundred grid points) your total grid size is large. The memory of your computer can handle probably 400,000-500,000 grid points. So, if your grid is smaller than that, you should be OK. Otherwise, need to increase the memory.

TASCflow also talks about memory requirements and management in its user manual. You may find Chapter 5.5 of the User Manual(Version 2.11) useful to read.

I hope it helps.


  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
How to optimize the memory usage when using FEM vasilis Main CFD Forum 11 August 24, 2009 23:57
Memory error? Young CFX 3 September 30, 2008 11:33
CFX CPU time & real time Nick Strantzias CFX 8 July 23, 2006 17:50
Run-Time memory conifguration Error Graeme CFX 1 February 21, 2006 00:04
Memory problems in Tascflow 2.12 Young Seok, Kang CFX 0 October 19, 2005 02:44

All times are GMT -4. The time now is 13:00.