How to avoid writing extra field quantites as ddt0(phi)

ali84 · November 12, 2009, 19:29

Hi,

I'm running DNS using a solver wich is based on icoFoam. It automatically writes ddt0(phi) ddt0(U) phi_0 U_0 in each time directory. These quantities seems to be used in my Crank-Nicholson time scheme.
Since my data is huge I prefer not to write them.
Is there any point in keeping these field quantities and if not is there any way to disable writing these quantities.

Alireza

Hellen · August 12, 2011, 03:21

Dear Alireza,

I met the same problem, to avoid writing the extra field quantites as ddt0, phi and so on. Have you solved this problem? Thank you very much!

best regards,

zxj160 · October 24, 2012, 10:05

Quote:

Originally Posted by Hellen

Dear Alireza,

I met the same problem, to avoid writing the extra field quantites as ddt0, phi and so on. Have you solved this problem? Thank you very much!

best regards,

I also met the same problem. Have you solve the problem or can you explain what the meaning of U_0 / phi_0 is ?

My best regards,
Jian

immortality · June 11, 2013, 15:36

I think they should be written.because next time steps need them.

November 12, 2009, 19:29	How to avoid writing extra field quantites as ddt0(phi)	#1
ali84 New Member Alireza Mahdavifar Join Date: Jul 2009 Location: Kingston, ON, Canada Posts: 4 Rep Power: 17	Hi, I'm running DNS using a solver wich is based on icoFoam. It automatically writes ddt0(phi) ddt0(U) phi_0 U_0 in each time directory. These quantities seems to be used in my Crank-Nicholson time scheme. Since my data is huge I prefer not to write them. Is there any point in keeping these field quantities and if not is there any way to disable writing these quantities. Alireza Last edited by ali84; November 13, 2009 at 14:14.

June 11, 2013, 15:36		#4
immortality Senior Member Ehsan Join Date: Oct 2012 Location: Iran Posts: 2,208 Rep Power: 27	I think they should be written.because next time steps need them. lpz456 likes this. __________________ Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked.

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August 12, 2011, 03:21		#2
Hellen New Member MS Zhang Join Date: Aug 2011 Posts: 3 Rep Power: 15	Dear Alireza, I met the same problem, to avoid writing the extra field quantites as ddt0, phi and so on. Have you solved this problem? Thank you very much! best regards,