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September 22, 2021, 07:44 |
Slip-Condition
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#1 |
New Member
Join Date: May 2018
Posts: 29
Rep Power: 8 |
Hello!
I'm currently trying to implement a Fluent case with a specified slip velocity. However, the boundary condition only allows me to use the no-slip condition or to specify a shear stress with the corresponding vector components. I then thought, I could calculate the vector components to result in a constant slip velocity, but this doesn't seem to work with my current understanding of the stress tensor. When I look into the Ansys manual (https://www.afs.enea.it/project/nept.../th/node11.htm), the stress tensor is a result of the viscosity and some kind of velocity derivatives. But exactly the latter one need to be zero (in my understanding) to result in a constant slip velocity... What should I therefore enter in the shear stress components? Or is this a completely bad route I'm trying to take? I am grateful for any information you could provide me, to better understand this topic. Thank you! For anyone wondering, I need to implement an "apparent" slip-condition, as already reported for polymer solutions in literature. |
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September 22, 2021, 15:21 |
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#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,680
Rep Power: 66 |
If you're trying to impose the velocity at a boundary, use a velocity inlet. Or you can even use a no slip moving wall.
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February 21, 2024, 18:21 |
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#3 |
New Member
Javid
Join Date: May 2023
Posts: 1
Rep Power: 0 |
Hey Jonas,
I was wondering if you could sort it out? |
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February 26, 2024, 11:43 |
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#4 |
New Member
Emmanuel Quayson-Sackey
Join Date: Feb 2024
Posts: 2
Rep Power: 0 |
Hello Jonas,
I am also facing the same problem . Can you please share with us if you found solution to that. |
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