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 sinaupdate June 17, 2012 07:49

liquid-solid modeling

hi everyone

i try to solve solid liquid mixture flow with eulerian method in anuular pipe
my primary phase is drilling mud with density 1300
solid phase is sand with diameter 3mm
i know the average axial velocity and volume fraction,but i dont know the particle velocity!! is it enough that i just give volume fraction to solid phase or i must give the particle velocity too??

How can i find particle sediment thickness on pipe wall ?? (sediment bed thickness)
thank's for any help :)

 sinaupdate June 17, 2012 17:06

i do it by this Assumption :
fluid inlet velocity = 7.5
volume fraction = 0.1
horizontal case
inner wall rotation =61 rpm
solid phase velocity = 0.5
number of mesh 2,600,000
countinuty converge up to 10e-05 in 600 iteration

result = 2200 pa

but it must be around 1176

please help me ,what cause this reason? by changing solid phase velocity can i make it right?:o

 sandisk January 5, 2013 00:23

Did you find the answer to your problem ?? i am also trying to simulate solid liquid slurry flow in pipes.. Are you using transient simulations ?? I am unable to get my simulation converged ??? I wonder if you could guide me in this..

 akhshik July 7, 2013 11:16

Quote:
 Originally Posted by sinaupdate (Post 366873) hi everyone i try to solve solid liquid mixture flow with eulerian method in anuular pipe my primary phase is drilling mud with density 1300 solid phase is sand with diameter 3mm i know the average axial velocity and volume fraction,but i dont know the particle velocity!! is it enough that i just give volume fraction to solid phase or i must give the particle velocity too?? How can i find particle sediment thickness on pipe wall ?? (sediment bed thickness) thank's for any help :)

Velocity Magnitude and Volume Fraction for liquid and solid should be determined for software.

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