I have an Question with Axi-symmetric Analysis
 

Hi :D

-------------------------------------------------------------------
first of all, I wan'na apologize about my terrible english :cool:
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:rolleyes:


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


Cartman.

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

-----------------------------------------------------------------------------