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Old   August 22, 2005, 10:02
Default SLIP BOUNDARY CONDITION
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vas
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hi, i want to do flow analysis using slip boundary condition. whether it is possible to do in FLUENT. whether fluent will support slip boundary?. if it is so, how can to do that. if anybody give suggestions regarding this,i am very thankful.
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Old   August 22, 2005, 10:42
Default Re: SLIP BOUNDARY CONDITION
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swarup
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Fluent supports slip boundary specification. See manual.

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Old   September 3, 2005, 03:43
Default Re: SLIP BOUNDARY CONDITION
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Manoj
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hi Thank but which chapter give me detail by

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Old   September 4, 2005, 00:12
Default Re: SLIP BOUNDARY CONDITION
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Swarup
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It is given in Chapter 7 on Boundary Conditions.

Swarup.
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Old   April 21, 2012, 10:51
Default Mach number for slip condition
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Hi;
I am trying to find out the mach number in a microscaled convergent divergent nozzle with slip boundary conditions and nitrogen as the working fluid using Fluent 6.2.16. But there is no option of Mach Number in fluent in this case. Kindly suggest me in this regard.
Thanx
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Old   April 21, 2012, 17:45
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Quote:
Originally Posted by Ainee View Post
Hi;
I am trying to find out the mach number in a microscaled convergent divergent nozzle with slip boundary conditions and nitrogen as the working fluid using Fluent 6.2.16. But there is no option of Mach Number in fluent in this case. Kindly suggest me in this regard.
Thanx
You need to calculate it from the information that fluent provides. Are you looking for Mach number over a cross section of the nozzle? If so, you need to calculate the bulk velocity and then use that to calculate Mach number.

Fluent is only a tool, it will not do all your work for you. You have to do some work also.
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Old   April 24, 2012, 17:30
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To enable slip on any wall:

Go to "Boundary Conditions"
select the wall you want to set as slip wall
click "Edit"
under "Shear Condition" click "Specified Shear"
leave all entries equal to zero
click OK
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Old   April 24, 2012, 17:38
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Quote:
Originally Posted by jpo View Post
To enable slip on any wall:

Go to "Boundary Conditions"
select the wall you want to set as slip wall
click "Edit"
under "Shear Condition" click "Specified Shear"
leave all entries equal to zero
click OK
that question was answered all the way back in 2005.....
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Old   May 2, 2012, 07:56
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Thanks for your reply. You mentioned that a question was answered all the way back in 2005. Can you please tell me the link to that question & its solution? Moreover, I want to solve the same microscaled convergent divergent nozzle in COMSOL. Can you suggest me in this regard? I have no idea about COMSOL.
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Old   May 2, 2012, 09:28
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Quote:
Originally Posted by Ainee View Post
Thanks for your reply. You mentioned that a question was answered all the way back in 2005. Can you please tell me the link to that question & its solution? Moreover, I want to solve the same microscaled convergent divergent nozzle in COMSOL. Can you suggest me in this regard? I have no idea about COMSOL.
Hi please read the thread to answer your own question about answers to questions that are clearly in the same thread.

I would never recommend [the current] COMSOL so I do not have any suggestions on it. There's no practical fluid flow problem that can be done in COMSOL that can't be done better using ANSYS meshing & CFX or Fluent.
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Old   July 23, 2012, 02:26
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I am simulating a microscaled convergent divergent nozzle in ANSYS Fluent using nitrogen as the working fluid. The inlet pressure is 101325 Pa while Outlet pressure is 10 Pa. Inlet, exit and wall temperature is 300K. What type of density should I use? I am using sutherland law for the viscosity. Should I use temperature dependent Cp and thermal conductivity? Waiting for your reply.
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Old   August 6, 2012, 06:36
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Hi I want to compare my ANSYS Fluent Results with a paper. But there are two problems.
1. My mach number has a maximum value of 4.78 while in the paper it is 2.7
2. My mach number contours without slip are matching with the papers contours with slip.
I want to ask what type of density, thermal conductivity, Cp and viscosity should I use. Waiting for your quick reply
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