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

hansai · October 24, 2012, 11:20

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, 06:15

Which turbulence model do you use?

Ayoshi · November 10, 2012, 16:15

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

hansai · February 22, 2013, 06:02

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, 06:28

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, 12:09

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

October 24, 2012, 11:20	Error Message: "Problem diverges: Momentum transport equation, variable: X-velocity"	#1
hansai New Member Join Date: Oct 2012 Posts: 11 Rep Power: 14	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.

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November 1, 2012, 06:15		#2
aminfaghihi New Member amin faghihi Join Date: Oct 2012 Posts: 6 Rep Power: 14	Which turbulence model do you use?

November 10, 2012, 16:15		#3
Ayoshi New Member Join Date: Jun 2012 Posts: 6 Rep Power: 14	if u are sure that all the residual values are less than 1, reduce the time step and try again ...

February 22, 2013, 06:02		#4
hansai New Member Join Date: Oct 2012 Posts: 11 Rep Power: 14	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, 06:28		#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, 12:09		#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.