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-   -   FLUENT Erosion DPM (Methane with Sand) - Strange Erosion Contours (http://www.cfd-online.com/Forums/fluent/129569-fluent-erosion-dpm-methane-sand-strange-erosion-contours.html)

chongjqw February 7, 2014 13:19

FLUENT Erosion DPM (Methane with Sand) - Strange Erosion Contours
 
Hello all,

I intend to model sand laden flow in a pipe of a certain complex geometry, and have more less followed the tutorial here (www.cfluid.com/batch.download.php?aid=642) except with a different erosion correlation (Det Norske Veritas's) and with a different flow condition of methane gas instead of water. The computed velocity flow field seemed fine.

Below are the velocity contours and the erosion contours I computed, of which the erosion contours are obviously wrong (negative erosion? :confused:). However, I am unable to find the problem with my simulation and hope that someone here can enlighten me.

http://blog-imgs-53.fc2.com/o/m/a/om...7164055c81.jpg
Velocity Contours

http://blog-imgs-53.fc2.com/o/m/a/om...7164017c3a.jpg
Erosion Contours

Many thanks in advance.

YANNAPOL February 21, 2015 05:17

Dear Chongjqw,

Could you please send me the tutorial I cannot access the link ?
www.cfluid.com/batch.download.php?aid=642

ghost82 February 21, 2015 05:57

Can you show us the correlation you used and specify which parameters did you input in the wall boundary conditions for walls?Probably the problem is there (equation or units).

Daniele

YANNAPOL February 22, 2015 22:17

1 Attachment(s)
Dear Daniele,

If I have 2 phases
-Primary Phase - water
-Secondary Phase - CaCO3

Can Accretion Model simulate the particle or granular of CaCO3 deposit to the wall which the excessive CaCO3 enough to block primary phase and cause clogging ?

You can see my attachment for explanation.

Best Regards,
Yannapol S.


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