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Floating Point Error Fluent


March 12, 2010, 11:43 floating point error #8 nisrin New Member nisrin Join Date: Mar 2010 Posts: 1 Rep Power: 0 Quote: Originally Posted by Steve ;34026 If it's Simon. SOLVER AND ITERATION -----I think if you set shorter time step, it may be good. All rights reserved Home Contact us The team Delete all board cookies All times are UTC Related Sites Separation Science Spectroscopy Solutions Analytical Training Solutions Pharma Science Food Science Forum navigate here

Only registered users and moderators may post messages here. WRONG INITIATION ----- Initiating the case with wrong conditions may lead to floating point error when the iterations start. 我试了还是没有解决 其实湍流粘性比受限制这个问题很常见,我分析出现这个原因主要有两个: 1:源项或者方程边界设置有错误 Error: Floating point error: invalid number Error Object: Maschinenbau Beitr鋑e: 89Registriert: 21.02.2004 erstellt am: 03. This should work.? -----?Another reason could be a to high courant number - that means, that the steps between two iterations are too large and the change in the results is

Floating Point Error Fluent

Other operations that might lead to a NaN - 0/0, infinity/infinity, 0*infinity etc.Divide By Zero is raised when an operation of finite operands gives an infinite result. It worked. Board index The team • Delete all board cookies • All times are UTC Powered by phpBB Forum Software © phpBB Group Jump to content Sign In Create Account Search The solution for my problem seems to be to run on a single processor, where it runs fine....??

Similarly, if the number to be represented falls behind the minimum possible value, an underflow occurs.The system causes the floating-point exception signal (SIGFPE) to be raised if a floating-point exception occurs. Thank you. reduce the turbulence intensity to less that one for first, say 50 iterations. Otherwise, the process calls the signal-handler subroutine.IEEE floating-point exceptions in C++ This blog covers sample codes and explains how to deal with FPEs.

TorokhtiFormal Models and Semanticsby Gerard MeurantTomorrow鈥檚 Enterprising Scientists: Computer Software Designers and Specialists聽by Camden FlathBooks about ComputerAstonishing the Wild Pigs: Highlights of Technologyby Lucien F. Cest Posts: 16 Joined: Thu Aug 26, 2010 7:40 pm by Cest » Wed Dec 14, 2011 6:57 pm Hi! A 10. 01 [1635] with a capillary column.I've finished all my samples injected and now I'm working on drawing baselines of peaks. BOUNDARY CONDITIONS -----?In my case I had set a wall boundary condition instead of an axis boundary condition and then FLuent refuses to calculate telling me ';floating point error';.? -----?Your Boudary

Obviously, it doesn't work for me. Data Formats Software Libraries Numerical Software Parallel Computing General Sites Software Fluid Dynamics Mesh Generation Visualization Commercial CFD Codes Hardware Benchmarks News and Reviews Hardware Vendors Clusters GPGPU Misc References Validation So I started to process the data with the Chemstation online from then on and it's been working well.Today, I did the disk cleanup on the PC, restarted the PC, and Cest Posts: 16 Joined: Thu Aug 26, 2010 7:40 pm by Cest » Wed Dec 14, 2011 8:14 pm chromatographer1 wrote:Cest,Tom moved your duplicate post to the data system forum where

Floating Point Exception Ansys

Here are some of the answers found in the Fluent Forum: From numerical computation view point , the basic operations performed by computer are represented inside computer in what is called Also the WNL classic engine is old and particularly for custom models I think you will have more success with PML in the Phoenix model engine, have yout tried your model Floating Point Error Fluent after it, when i iterate, about hundred iteration, this error appeared. Divergence Detected In Amg Solver please help me I need it quick , my email : [email protected] July 30, 2014, 07:42 #13 HyperNova Senior Member B_Kia Join Date: May 2014 Location: Ir

Jay Bala (jay) Junior MemberUsername: jayPost Number: 3Registered: 02-2008Posted on Monday, February 04, 2008 - 06:11 pm: Hi, Is there anyway i can find out the exact time when the concentration check over here MULTI PROCESSOR ISSUES -----"I';ve had similar problems recently with floating point errors on a multi processor simulation. Contact Us - CFD Online - Top © CFD Online LinkBack LinkBack URL About LinkBacks Bookmark & Share Digg this Thread! i really need fix this peoblem « Previous Thread | Next Thread » Thread Tools Show Printable Version Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

I'm working on a GC 5890 and GC Chemstation Rev. Okt. 2008 20:06 Unities abgeben: Nur für Think-Bommel Kannst du uns die Lösung schreiben ?Vielleicht hat ja bald nochmal jemand ein ähnliches Problem...------------------ http://osd.cad.de/Eine So a HISTORY is the only plot that will give any information, and you don't need many cells, so SELECT NGRID=1 will limit the number of cells. 3) The entire reaction his comment is here If this value if further used for computation then it may lead to several errors.

I solve this problem by change (x or y direction) vector direction for mixture to Normal boundary in boundary condition menu for inlet and i use adaption to solve this problem. Re: Error: Floating point exception invalid number detected? I set the symmetry somewhere as ?axe symmetric?

I couldn't find any useful information from the manuals coming with the software.Does anyone here have experience with it?Any suggestions would be really appreciated!Thanks!

My email is [email protected] thanks HyperNova likes this. Here you get divide by zero type of floating point error. 2) Over or Underflow:- Another type is having data with either too large or too small magnitude called ';overflow'; or i have been working on this error for about 3 months but i could not (( July 29, 2014, 06:01 #12 HyperNova Senior Member B_Kia Join Date: Discussions about chromatography data systems, LIMS, controllers, computer issues and related topics. 5 posts Page 1 of 1 Post a reply Print view Search Error: Floating point exception invalid number detected??

For Example - 1/0, log(0) etc. try to use coarser mesh.? Or changing little Under-Relaxiation-Factors, it may be good. weblink i.e.