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Old   September 15, 2004, 07:21
Default user subroutines
  #1
vladimir
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Hi all,

I have a simple question. How to make velocity gradients available for user programming? There is something, in the 'nom.inc' file, like that the user must do it using prostar but nothing else. So I am wondering what I am suppose to do in prostar?

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Old   September 15, 2004, 12:06
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  #2
steve
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prostar has an "operate,gradient" command which will compute them for you. They are placed in the usual post data registers where you can work them like any other post data or write them to a file and read them into another program.
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Old   September 16, 2004, 03:09
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vladimir
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You maybe misunderstood me. I know how to do it in prostar, but it would be a bit inconvenient after each iteration to run prostar, then get the gradients, save them to a file, read it from a subroutine, do my job with it repeat it all over again and again don't you think?

I don't want to do it as a masochist. I found out the gradients can be accessed in vistur.f subroutine but not in sorsca.f. Any ideas??
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Old   September 16, 2004, 17:18
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steve
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call support, they can send you an example coding for the velocity gradients so that you can acess it from any routine
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Old   September 17, 2004, 02:57
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vladimir
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It seems to be the only way. Thank you.
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Old   September 18, 2004, 19:47
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Sheila
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CALL VELGRD(UG,GU,S,CX,SB,NFONE,KEY,URO,URSI,VISTG,DENG ,TEG,VISLAM,MON,ISTYP)

Where UG is velocity, GU is gradient.

Dont forget to dimension the variables. These should be in one of the files, cant remember which, probqably nom.inc.
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Old   September 20, 2004, 13:40
Default Re: user subroutines
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vladimir
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Thank you Sheila but I asked support in the meantime and got an answer. It can be done via a constant #11 by assigning 1 as its value within prostar.

regards
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Old   October 12, 2004, 13:59
Default Re: user subroutines
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Ethan
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Hi Valdimir, I am also interested in getting the velocity gradient during the computation. Can you elaborate what you have done ? Thank You very much.

-Ethan
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