CEL or Fortran

ThomasN · September 18, 2014, 06:17

Hello,

maybe it was already discussed but I didn't found anything. For huge calculations with fields and gradients is it better to use Fortran than the CEL? Which one will work faster?

Thanks for reply!

Thomas

ghorrocks · September 18, 2014, 06:40

I almost never use fortran, regardless of the simulation size. CEL does not have much overhead, except if you are using CEL to calculate field variables. But if you are using CEL to calculate field variables you probably want to include it in the result file so you can check it is working as expected - this would apply regardless of whether you are calculating the variable by CEL or fortran, so the overhead is similar in both cases.

ThomasN · September 18, 2014, 06:42

Ok thanks for the advice. I don't want to use it for the results file but for the calculation of the drag coefficient using the AIAD model by HZDR. http://www.cfd.com.au/cfd_conf09/PDFs/011HOH.pdf

September 18, 2014, 06:17	CEL or Fortran	#1
ThomasN New Member Join Date: Oct 2013 Posts: 21 Rep Power: 13	Hello, maybe it was already discussed but I didn't found anything. For huge calculations with fields and gradients is it better to use Fortran than the CEL? Which one will work faster? Thanks for reply! Thomas

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September 18, 2014, 06:40		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	I almost never use fortran, regardless of the simulation size. CEL does not have much overhead, except if you are using CEL to calculate field variables. But if you are using CEL to calculate field variables you probably want to include it in the result file so you can check it is working as expected - this would apply regardless of whether you are calculating the variable by CEL or fortran, so the overhead is similar in both cases.

September 18, 2014, 06:42		#3
ThomasN New Member Join Date: Oct 2013 Posts: 21 Rep Power: 13	Ok thanks for the advice. I don't want to use it for the results file but for the calculation of the drag coefficient using the AIAD model by HZDR. http://www.cfd.com.au/cfd_conf09/PDFs/011HOH.pdf