Error Message: "Problem diverges: Momentum transport equation, variable: X-velocity"

hansai · October 24, 2012, 10:20

Does anybody know about this error message: "Problem diverges: Momentum transport equation, variable: X-velocity" (taken from the Case.fla-file)?
i was calculating a simulation of an FAME-Engine+ mesh but the computer aborts the iteration.
however the residuals RESU, RESV, RESW, RESM, etc. are all below 1.

aminfaghihi · November 1, 2012, 05:15

Which turbulence model do you use?

Ayoshi · November 10, 2012, 15:15

if u are sure that all the residual values are less than 1, reduce the time step and try again ...

hansai · February 22, 2013, 05:02

solved the problem, it was quite easy: during the meshing process, a meshing interval was defined by multiple surfaces.
but its not easy, to conclude just from the error message to the cause of the problem...

CITY_CFD · July 30, 2017, 05:28

Hi could you please describe me on what you did to solve the problem as I am facing similar issue now.
Thanks

ddfernando · June 13, 2021, 11:09

Could you please explain how you solved it, I am facing the same issue.

October 24, 2012, 10:20	Error Message: "Problem diverges: Momentum transport equation, variable: X-velocity"	#1
hansai New Member Join Date: Oct 2012 Posts: 11 Rep Power: 13	Does anybody know about this error message: "Problem diverges: Momentum transport equation, variable: X-velocity" (taken from the Case.fla-file)? i was calculating a simulation of an FAME-Engine+ mesh but the computer aborts the iteration. however the residuals RESU, RESV, RESW, RESM, etc. are all below 1.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Question on the discretization of momentum equation in icoFoam	MPJ	OpenFOAM	3	October 4, 2011 09:44
momentum equation (Normal to wall)	kk	Main CFD Forum	0	July 2, 2006 23:13
momentum equation (Normal to wall_	kk	Main CFD Forum	0	July 2, 2006 23:10
Problem with momentum equation	Francisco	Main CFD Forum	4	August 5, 2004 20:04
transport equation for SGS scalar variance	chinthakindi	Main CFD Forum	0	April 27, 2004 09:26

November 1, 2012, 05:15		#2
aminfaghihi New Member amin faghihi Join Date: Oct 2012 Posts: 6 Rep Power: 13	Which turbulence model do you use?

November 10, 2012, 15:15		#3
Ayoshi New Member Join Date: Jun 2012 Posts: 6 Rep Power: 13	if u are sure that all the residual values are less than 1, reduce the time step and try again ...

February 22, 2013, 05:02		#4
hansai New Member Join Date: Oct 2012 Posts: 11 Rep Power: 13	solved the problem, it was quite easy: during the meshing process, a meshing interval was defined by multiple surfaces. but its not easy, to conclude just from the error message to the cause of the problem...

July 30, 2017, 05:28		#5
CITY_CFD New Member Kelly Join Date: Jul 2017 Posts: 1 Rep Power: 0	Hi could you please describe me on what you did to solve the problem as I am facing similar issue now. Thanks

June 13, 2021, 11:09		#6
ddfernando New Member Dinoja Join Date: Jun 2021 Posts: 1 Rep Power: 0	Could you please explain how you solved it, I am facing the same issue.