OPENFOAM chtMultiRegionFoam error

ernarasimman · September 28, 2015, 07:41

Hi...
inMy case actually for me mesh all are k ..but at the time of solving solver showing this error after some iterations ...so how to rectify this error...here i attached that log file also ..problem is SHELL & TUBE Heat Exchanger

tomf · September 29, 2015, 04:55

Hi,

Code:

Solving for solid region SOLID
DICPCG: Solving for h, Initial residual = 0.0309205, Final residual = 7.32757e-
09, No Iterations 3
Min/max T:min(T) [0 0 0 1 0 0 0] -8.92336 max(T) [0 0 0 1 0 0 0] 764.321
ExecutionTime = 46.21 s ClockTime = 47 s

This section from your log may give you a clue. For some reason you get negative temperature in your SOLID region. Since you have provided no information on boundary condtions, or description of your case it would be impossible to help you further.

Please have a look here:
How to give enough info to get help.

ernarasimman · September 29, 2015, 07:21

Can i maintain through out the solid same temperature like 500K..and for my first fluid boundary conditions are internal field 300K and inlet temp 350K ..for second fluid 320K initial ..330K for inlet..so this is correct or not ...

tomf · September 29, 2015, 07:55

I can not help you further without more information about your case, please have a look at the thread I posted before.

September 29, 2015, 04:55		#2
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 634 Rep Power: 32	Hi, Code: Solving for solid region SOLID DICPCG: Solving for h, Initial residual = 0.0309205, Final residual = 7.32757e- 09, No Iterations 3 Min/max T:min(T) [0 0 0 1 0 0 0] -8.92336 max(T) [0 0 0 1 0 0 0] 764.321 ExecutionTime = 46.21 s ClockTime = 47 s This section from your log may give you a clue. For some reason you get negative temperature in your SOLID region. Since you have provided no information on boundary condtions, or description of your case it would be impossible to help you further. Please have a look here: How to give enough info to get help. ernarasimman likes this.

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September 29, 2015, 07:21		#3
ernarasimman Member cfd Engineer Join Date: Sep 2014 Location: Banaglore Posts: 30 Rep Power: 11	Can i maintain through out the solid same temperature like 500K..and for my first fluid boundary conditions are internal field 300K and inlet temp 350K ..for second fluid 320K initial ..330K for inlet..so this is correct or not ...

September 29, 2015, 07:55		#4
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 634 Rep Power: 32	I can not help you further without more information about your case, please have a look at the thread I posted before.