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Search took 0.00 seconds. Search: Posts Made By: mejahan
Forum: CFX May 21, 2014, 19:52
Replies: 20
Views: 2,609
Posted By mejahan
You are right, but consider these two...

You are right, but consider these two configuration of BC
1- "Opening with pressure at the inlet" and "Velocity component at the Outlet"
2- "Opening with pressure at the inlet" and "Opening with...
Forum: CFX May 20, 2014, 19:06
Replies: 20
Views: 2,609
Posted By mejahan
But even in velocity outlet BC, I can have the...

But even in velocity outlet BC, I can have the either direction defined by the profile of the velocity.
The same case for the Opening with the velocity components, the solver has to follow whatever...
Forum: CFX May 20, 2014, 16:30
Replies: 20
Views: 2,609
Posted By mejahan
Hi again, The Opening BC gives the solver...

Hi again,

The Opening BC gives the solver the option of having incoming and out coming flow at the boundary section.
But what is the difference between using Opening with velocity components and...
Forum: CFX May 19, 2014, 13:22
Replies: 20
Views: 2,609
Posted By mejahan
Hi Glenn, Thanks for your reply. I am...

Hi Glenn,

Thanks for your reply.
I am trying the different possible options.
But about the SST, as the Re on the maximum flow goes beyond 7000, I am using it.
Forum: CFX May 19, 2014, 02:28
Replies: 20
Views: 2,609
Posted By mejahan
Hi Glenn, I posted the CCL and looking...

Hi Glenn,

I posted the CCL and looking forward to seeing your reply.

Thanks
Forum: CFX May 16, 2014, 03:13
Replies: 20
Views: 2,609
Posted By mejahan
I have studied the documentation about the CFX...

I have studied the documentation about the CFX BC(attached). As I have read and experienced, pressure and mass flow BCs, impose the artificial walls in reverse flow.
I have attache the CCL file...
Forum: CFX May 15, 2014, 19:48
Replies: 20
Views: 2,609
Posted By mejahan
Thanks, If I set the mass flow outlet, then...

Thanks,

If I set the mass flow outlet, then we have problem of artificial wall, but velocity component works. But the question is, if I set the normal component of the velocity, what is the...
Forum: CFX May 15, 2014, 14:25
Replies: 20
Views: 2,609
Posted By mejahan
Hi Glenn, I think I found the source of the...

Hi Glenn,

I think I found the source of the problem and it is the BC.
When I set the Pressure or Mass flow BC, the solver will consider an artificial wall at the boundary to prevent the inflow...
Forum: CFX May 14, 2014, 14:36
Replies: 20
Views: 2,609
Posted By mejahan
Hi Glenn, I have plotted the CCL, as you can...

Hi Glenn,

I have plotted the CCL, as you can see it is the same as the input file that I posted before.
I am confused about the results, why the solver does not follow the BC when getting near...
Forum: CFX May 13, 2014, 21:22
Replies: 20
Views: 2,609
Posted By mejahan
Hi Glenn, As it is incompressible flow the...

Hi Glenn,

As it is incompressible flow the mass differs with velocity just in a constant coefficient , density and area.
AS it shows on the figure, the BC does not follow the mass flow that I...
Forum: CFX May 13, 2014, 17:56
Replies: 20
Views: 2,609
Posted By mejahan
Boundary Conditions do not match the results

Hello friends,

I am simulating a dynamic mass flow rate at the outlet and presser inlet BCs. The mass is changing with time by an input function file and the flow is incompressible.
But the...
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