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how to reduce reducing rpvar dpm/parallel/loop-factor

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Old   April 6, 2013, 03:37
Default how to reduce reducing rpvar dpm/parallel/loop-factor
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Tarantino
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Ciao!

During DPM iteration I got two messages:

1 - "Please consider reducing rpvar dpm/parallel/loop-factor to reduce the number of incomplete tracks in parallel.
Current value is 10."

2 - "Parallel particle tracking concurrency 56%"

for the first one I cannot find this value to reduce. How can I reduce this number?
for the next, what does this mean?
Thanks.
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Old   April 8, 2013, 12:18
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Hi!

Since it is mentioned that the current value is 10, then you can easily reduce it by this command:

(rpsetvar 'dpm/parallel/loop-factor **)

here ** is the value that you want to set for instance 5.

About "Parallel particle tracking concurrency", when you run the DPM parallel with the flow iteration, this percent show you how much of released particle simulated with the flow iteration. the higher value shows more accuracy.
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Old   September 25, 2014, 16:10
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Hi Tarantino,

Have you figured out how to do that? I tried what Asal suggested and Fluent said ''invalid command". So Can you give me a hint if you solved it.

Thanks,
Richard
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Old   September 25, 2014, 16:37
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Hi Astio,

Like I replied to Tarantino, I don't know how to do it. Can you give more details?

Thanks,
Richard
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Old   September 26, 2014, 08:01
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hi!

What Asal said, was worked for me! I don't know what is the problem in your case!!
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Old   September 26, 2014, 09:56
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hello,

Did you mean put the text "(rpsetvar 'dpm/parallel/loop-factor 5)" into the Text User Interface?

It says ""invalid command [(rpsetvar]."" Then How did you apply the command?

Thanks,
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Old   September 26, 2014, 10:24
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Quote:
Originally Posted by richard ben View Post
hello,

Did you mean put the text "(rpsetvar 'dpm/parallel/loop-factor 5)" into the Text User Interface?

It says ""invalid command [(rpsetvar]."" Then How did you apply the command?

Thanks,
If you have enough memory (cas file not too big), you can try to open the .cas file with a text editor and search for the line:
dpm/parallel/loop-factor 10

Edit it and save the cas.
Not sure it will work
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Old   September 26, 2014, 11:30
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wow that's impressive. I'll try thanks.
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Old   September 26, 2014, 11:35
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I tried and couldn't be able to open the cas file. It's like 150+ M. Maybe too big. Any further suggestions?

Thanks
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Old   September 27, 2014, 04:37
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Hello!

I give it a try again to make sure:

Code:
	outlets
	fluid
     parallel,
Done.
Reading "C:\FLUENT\Steady\DRO_Steady_Close.dat"...
Parallel variables...
Done.

adapt/                  file/                   report/
define/                 mesh/                   solve/
display/                parallel/               surface/
exit                    plot/                   views/

> (rpsetvar 'dpm/parallel/loop-factor 5)
dpm/parallel/loop-factor

>

It's work fine for me!
What is the version of Fluent which you have used? Did you used Lagrangian method?
You had another problem!
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Old   September 29, 2014, 10:22
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Hi Tarantino,

Thanks for your reply. Maybe it's because of the Fluent version. The fluent is 15.0.
Yes I enabled the Lagrangian method. (one-way DPM coupling)



Thanks
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Old   September 29, 2014, 10:44
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If you did not try, avoid copy paste of the command and type yourself the command in the text user interface, then press enter.
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Old   September 29, 2014, 11:47
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Hey Daniele,

Bingo! I appreciate a lot.

Thanks
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