I have an Question with Axi-symmetric Analysis

cartman · November 5, 2011, 03:16

Hi

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first of all, I wan'na apologize about my terrible english

because my mother language is not a english
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I'm try to analysis nozzle flow(converging-diverging ultrasonic nozzle)

with 2D plane (axisymmetric)

the questions is like this...

"What does axis boundary conditions means?"

absolutery, it means axis,, but what I wanna know is

mathmatically.. is it kind of neumann condition?

I guess, dΦ/dr = 0 (Φ=p,v,t,whatever), is it right?

I tried to find it on 'fluent theory guide'... and I failed

thank you for reading this, and I'm wating for your reply

Cartman.

cartman · November 6, 2011, 08:45

OMG

User's Guide Says
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To determine the appropriate physical value of a particular variable at a point on the axis, fluent uses the cell value in the adjacent cell

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November 5, 2011, 03:16	I have an Question with Axi-symmetric Analysis	#1
cartman Member Chris, Kam Join Date: Nov 2010 Location: Busan, South Korea Posts: 42 Rep Power: 15	Hi ------------------------------------------------------------------- first of all, I wan'na apologize about my terrible english because my mother language is not a english ------------------------------------------------------------------- I'm try to analysis nozzle flow(converging-diverging ultrasonic nozzle) with 2D plane (axisymmetric) the questions is like this... "What does axis boundary conditions means?" absolutery, it means axis,, but what I wanna know is mathmatically.. is it kind of neumann condition? I guess, dΦ/dr = 0 (Φ=p,v,t,whatever), is it right? I tried to find it on 'fluent theory guide'... and I failed thank you for reading this, and I'm wating for your reply Cartman.

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November 6, 2011, 08:45		#2
cartman Member Chris, Kam Join Date: Nov 2010 Location: Busan, South Korea Posts: 42 Rep Power: 15	OMG User's Guide Says ----------------------------------------------------------------------------- To determine the appropriate physical value of a particular variable at a point on the axis, fluent uses the cell value in the adjacent cell -----------------------------------------------------------------------------