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Forum: CFX December 6, 2011, 14:26
Replies: 35
Views: 22,317
Posted By Far
yes you are right, Av Static pressure BC is more...

yes you are right, Av Static pressure BC is more realistic. I shall share full analysis here as you have suggested within couple of days.

Thanks for giving me new ideas for data interpretation....
Forum: CFX December 2, 2011, 10:31
Replies: 35
Views: 22,317
Posted By Far
Well at the 8.18 chords downstream the variation...

Well at the 8.18 chords downstream the variation in static pressure distribution for average static pressure condition is very less (127000 to 132000 pa) as compared to interface zone. So at the far...
Forum: CFX December 1, 2011, 07:41
Replies: 35
Views: 22,317
Posted By Far
Well, I am not talking about this particular...

Well, I am not talking about this particular thread.
Forum: CFX November 30, 2011, 22:40
Replies: 35
Views: 22,317
Posted By Far
Specifying average static pressure = 0 or 101325...

Specifying average static pressure = 0 or 101325 or any other value has the same effect and as mentioned by glenn it defines dirichlet BCs on pressure and neumann BCs on velocity and scalars.
...
Forum: CFX November 19, 2011, 13:30
Replies: 35
Views: 22,317
Posted By Far
Finally got the definite answer. The answer is ...

Finally got the definite answer. The answer is

" For axial compressor rotor, at-least, the uniform static pressure does not represent the true physics and is therefore technically wrong. However,...
Forum: CFX November 17, 2011, 14:55
Replies: 35
Views: 22,317
Posted By Far
please look at this

please look at this
Forum: CFX November 16, 2011, 13:44
Replies: 35
Views: 22,317
Posted By Far
So again average static pressure makes more sense...

So again average static pressure makes more sense right?
Forum: CFX November 16, 2011, 13:38
Replies: 35
Views: 22,317
Posted By Far
In this context static pressure condition is...

In this context static pressure condition is totally wrong for turbo machinery flows ???? right?
Forum: CFX November 16, 2011, 12:17
Replies: 35
Views: 22,317
Posted By Far
Now question comes, when to use static pressure...

Now question comes, when to use static pressure or average static pressure condition. Can you name three three cases for each boundary condition as per your understanding? e.g. what should be...
Forum: CFX November 16, 2011, 09:43
Replies: 35
Views: 22,317
Posted By Far
While looking at the static pressure at different...

While looking at the static pressure at different planes from inlet to outlet, it is clearly visible that the average static pressure condition permits the solution to be developed naturally than the...
Forum: CFX November 14, 2011, 09:43
Replies: 35
Views: 22,317
Posted By Far
so you are ruling out the uniform static pressure...

so you are ruling out the uniform static pressure boundary condition if it is placed too close?

And from your discussion I also infer that average pressure static with zero blend factor should...
Forum: CFX November 14, 2011, 09:32
Replies: 35
Views: 22,317
Posted By Far
What shall be difference if we only define...

What shall be difference if we only define average static pressure with zero blend in contrast to average static pressure with specified blend of 5%
Forum: CFX November 14, 2011, 05:53
Replies: 35
Views: 22,317
Posted By Far
Reference : J. Turbomach Volume 128 Jan 2006 page...

Reference : J. Turbomach Volume 128 Jan 2006 page 126 NA Cumpsty and J.H. Horlock

If static pressure conditions are to be used at exit (total to static performance measurement) they should be...
Forum: CFX November 13, 2011, 18:45
Replies: 35
Views: 22,317
Posted By Far
I know that the static pressure is constant on...

I know that the static pressure is constant on the outlet plane in actual rotating test rigs, but outlet is far far away from the compressor as compared to CFD. Also they have diffuser and other...
Forum: CFX November 13, 2011, 18:33
Replies: 35
Views: 22,317
Posted By Far
I have similar results, didn't find in any...

I have similar results, didn't find in any difference in compressor map. 100% overlap
Forum: CFX November 13, 2011, 17:36
Replies: 35
Views: 22,317
Posted By Far
I am still not able to decide whether I should...

I am still not able to decide whether I should use average static pressure or static pressure.
Forum: CFX November 13, 2011, 17:34
Replies: 35
Views: 22,317
Posted By Far
1. Take an example of compressor, we knew from...

1. Take an example of compressor, we knew from theory that the static pressure increases from hub to casing in response to centrifugal force, so if we restrict the outlet condition to single static...
Forum: CFX November 11, 2011, 06:18
Replies: 35
Views: 22,317
Posted By Far
What is the physical significance of both...

What is the physical significance of both options. When to use static pressure (fixed every where) and when to use the Average static pressure(floating with average constrained)?

In my opinion...
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