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For P_rgh, the number of iterations is always greater than 500.

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Old   February 2, 2018, 10:22
Default For P_rgh, the number of iterations is always greater than 500.
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Kai Jiang
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Hello,foamer
i'm modeling the two phase system of water and solid particle using twoPhaseEulerFoam. But, For P_rgh, the terimnal indicates the number of iterations is always greater than 500.

I can't solve the problem, please help me !

Best regards!
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Old   February 2, 2018, 11:09
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Tobias Holzmann
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Hi,

which linear solver are you using? Please read the thread from Nils: How to give enough info to get help
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Old   February 2, 2018, 11:34
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Hi,Tobi

Thanks for you quick reply. I will illustrate the case from me and the problem i met in terms of your advices

Best regards!
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Old   February 2, 2018, 15:13
Default twoPhaseEulerFoam-pipeline(3D)- diverges
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Quote:
Originally Posted by Tobi View Post
Hi,

which linear solver are you using? Please read the thread from Nils: How to give enough info to get help
Hi, my current project is as follows:
I want to discuss a problem about two phase system of water and solid particle( slurry flow in 3D pipeline ) using twoPhaseEulerFoam.
**********************************************
The basic description about the problem i'm studying:
1.the solid-liquid two phase flow, that is slurry flow.
2.This is an isothermal flow. So, It doesn't have to solve the temperature equation from the document-"twoPhaseEulerFoam.C".
3.It is considered that the drag force and turbulent diffusion force affect the interphase momentum exchange.
4.the volume fraction of solid particle is more than or equal to 0.2.
5.the initial inlet velocity of water is 0.4m/s. the initial lnlet velocity of solid particle is 0.4m/s.
************************************************
The problem i met :
The calculation has always been divergent and the terminal display for P_rgh, the number of iterations is always more than 500.
**************************************************
the geometry
https://app.box.com/s/lpx0af9v8op5jn7ua2bumx3ks12na899
the mesh
https://app.box.com/s/jweedcos5x5y51ogsfpmlsyml3iqosgs
the checkMesh
https://app.box.com/s/5cot7vlboi37btzuybeioje65tixxjbu
the fvsolution
https://app.box.com/s/e0s1zdqk4r4orbuogfxmf6nqje7u603f
the fvschemes
https://app.box.com/s/uazebrk7n060j54ilmgtyo2ek3e3q9yg
the case
https://app.box.com/s/w9yv9ym86teh86vqatk0dze4vahmirmf
the error code
https://app.box.com/s/xeartido1boommr8a2mqx0lcmf4y4qtj
***********************************************
Thanks!
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