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FLUENT Erosion DPM (Methane with Sand) - Strange Erosion Contours

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Old   February 7, 2014, 13:19
Default FLUENT Erosion DPM (Methane with Sand) - Strange Erosion Contours
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Jasmine
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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? ). However, I am unable to find the problem with my simulation and hope that someone here can enlighten me.


Velocity Contours


Erosion Contours

Many thanks in advance.
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Old   February 21, 2015, 05:17
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Dear Chongjqw,

Could you please send me the tutorial I cannot access the link ?
www.cfluid.com/batch.download.php?aid=642
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Old   February 21, 2015, 05:57
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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).

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Old   February 22, 2015, 22:17
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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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File Type: jpg Deposition OR Accretion.jpg (15.9 KB, 5 views)
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