Flow 3d warning "cfpk"

jason_sjtu · July 22, 2014, 02:44

my warning shows as follow.

============= mentor tip ===============
persistent f-packing location at t= 0.54719E+01
x= 0.50000E-01, y= 0.50000E-01, z= 0.50000E+01
i= 2, j= 2, k= 64
f= 0.81884E-01
========================================

recommend reducing cfpk by factor of 10

(1) is the warning important?
(2) what can i do to make such warning disappear?
(3) what does "cfpk" mean?

JBurnham · July 22, 2014, 20:28

Search this forum for 'f-packing'. This question has been asked many times.

jason_sjtu · July 22, 2014, 22:23

Quote:

Originally Posted by JBurnham

Search this forum for 'f-packing'. This question has been asked many times.

Thank you for your reply.
I think i got where i was wrong and the meaning of cfpk.
Thanks a lot again.
best wishes.

Ashit Barun · November 21, 2024, 14:12

I am facing the same issue. How can i avoid reducing f packing factors warning

Ashit Barun · November 21, 2024, 14:19

What is the importance of f-facking factors? Can the result be influenced by a warning about this problem? What is the meaning of recommending reducing cfpk by a factor of 10

MSM1985 · November 26, 2024, 08:21

F packing algorithm is used to clean up foaming flows like in hydraulic jump. This is essential for one fluid, sharp interface problems and simulation results will be unphysical if you turned it off for the mentioned case.

Ashit Barun · November 26, 2024, 08:44

Quote:

Originally Posted by MSM1985

F packing algorithm is used to clean up foaming flows like in hydraulic jump. This is essential for one fluid, sharp interface problems and simulation results will be unphysical if you turned it off for the mentioned case.

Thank you for giving me these valuable tips.Besides, I want to know how to reach an equilibrium Scour depth. if you have any ideas, then share me.

July 22, 2014, 02:44	Flow 3d warning "cfpk"	#1
jason_sjtu New Member jason Join Date: Mar 2014 Posts: 19 Rep Power: 12	my warning shows as follow. ============= mentor tip =============== persistent f-packing location at t= 0.54719E+01 x= 0.50000E-01, y= 0.50000E-01, z= 0.50000E+01 i= 2, j= 2, k= 64 f= 0.81884E-01 ======================================== recommend reducing cfpk by factor of 10 (1) is the warning important? (2) what can i do to make such warning disappear? (3) what does "cfpk" mean?

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July 22, 2014, 20:28		#2
JBurnham Senior Member Jeff Burnham Join Date: Apr 2010 Posts: 204 Rep Power: 17	Search this forum for 'f-packing'. This question has been asked many times.

November 21, 2024, 14:12		#4
Ashit Barun New Member Ashit Join Date: Nov 2024 Posts: 3 Rep Power: 2	I am facing the same issue. How can i avoid reducing f packing factors warning

November 21, 2024, 14:19		#5
Ashit Barun New Member Ashit Join Date: Nov 2024 Posts: 3 Rep Power: 2	What is the importance of f-facking factors? Can the result be influenced by a warning about this problem? What is the meaning of recommending reducing cfpk by a factor of 10

November 26, 2024, 08:21		#6
MSM1985 Member Sehroosh Join Date: Apr 2019 Location: Pakistan Posts: 60 Rep Power: 7	F packing algorithm is used to clean up foaming flows like in hydraulic jump. This is essential for one fluid, sharp interface problems and simulation results will be unphysical if you turned it off for the mentioned case.