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-   -   Full MultiGrid setting (https://www.cfd-online.com/Forums/fluent/116340-full-multigrid-setting.html)

HA11 April 17, 2013 07:40

Full MultiGrid setting
 
Hi,

I'm trying to set FMG inputs in fluent command console, and it gives me invalid command error.

> solve/initialization/set-fmg-initialization
invalid command [set-fmg-initialization]

do you know why?:confused:

Regards,

CDollarsign April 17, 2013 10:28

I think you need a slash between set and fmg-initialization.

solve/initialization/set/fmg-initialization

HA11 April 17, 2013 21:01

Thanks,

The command is right, but the problem was from solution initialization.
I restart the fluent and in solution initialization, by redoing the "initialization"...the command the same as I mentioned was working...

micro11sl April 28, 2014 13:02

Quote:

Originally Posted by HA11 (Post 421372)
Thanks,

The command is right, but the problem was from solution initialization.
I restart the fluent and in solution initialization, by redoing the "initialization"...the command the same as I mentioned was working...

I think you need an exsiting solution to make that fmg initialisation work. Apart from that, using fmg initialisation sometimes cannot drop residual more than 3 orders in my 3D external flow cases. So be careful of it, I find hybrid initialisation is somewhat good enough.

mahbood October 20, 2016 21:53

Hi folks,

Same problem for me on Fluent 17.1,

kingjewel1 May 3, 2017 08:26

I type:

Code:

sol ini hyb
sol ini fmg

Tested on 17.1

As a caveat- It depends on your mesh and sometimes causes the whole thing to crash. Secondly it doesn't work with a transient solver. Anyone know why it can't handle a transient solver setting?

Keftin May 3, 2017 09:18

ANSyn FLUENT
 
Good day, I am a masters student from ABU zaria in Nigeria, I want to perform simulation for a flow field of a harmonic pattern Diffuser argumented wind turbine. I want to know if someone can teach me how to simulate the flow fields. Thank you
+2347010398094


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