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Old   September 26, 2009, 01:49
Default 2d nozzle simulation, need help
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Swee5420
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I am currently conducting a project of simulating supersonic flow in a nozzle in 2d.
My problem is how to define the area of the inlet and outlet of the nozzle, since the reporting surface area is incorrect.

For example, the inlet has a diameter of 21mm, hence the actual area should be A=D^2 x pi /4 = 3.46E-4. But the reporting surface area is 21mm^2, which leads to an incorrect reporting mass flowrate too.

How do i change the surface area so that the reporting area, mass flowrate will be correct?

Thanks in advance
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Old   September 30, 2009, 01:41
Default supersonic flow analysis of 2D Nozzle
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sharanappa
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Are you using any software for the simulation ? if yes which software are you using. In software you need not calculate any areas. I have done a similar project using Fluent on a C-D nozzle considering the upper half since is axi-symmetric. In such case area should be equal to radius(r)*depth(d) and since the depth is unity so area is equal to r m^2.

If you can tell me about the type of nozzle you have chosen and other details I can help you further.


Last edited by sharan; September 30, 2009 at 14:41.
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Old   September 30, 2009, 05:32
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Rami Ben-Zvi
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Seems like your software is unaware of your geometry being axisymmetric, and treats it as planar of unit thickness.
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Old   May 24, 2012, 00:33
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Arif
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Looking for qualified freelancer to simulate supersonic flow through C-D nozzle using fluent 6.2.16

please contact upal_arif@yahoo.com








Quote:
Originally Posted by sharan View Post
Are you using any software for the simulation ? if yes which software are you using. In software you need not calculate any areas. I have done a similar project using Fluent on a C-D nozzle considering the upper half since is axi-symmetric. In such case area should be equal to radius(r)*depth(d) and since the depth is unity so area is equal to r m^2.

If you can tell me about the type of nozzle you have chosen and other details I can help you further.

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