1 reply to this topic

[mechenger]

hi guys. i want to simplify the navier stokes and continuity equations for cylindrical pipe flow. what i have said is

1. assume 2D instead of 3D flow. but how can i justify this?
2. incompressible flow........p(density)=0
3. isothermal....................t=0
4. steady-state flow.........d/dt=0

these assumptions will simlify these 2 equations significantly but how to justify it i am struggling.

can anyone help.

an attachment of the pipe is shown.

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[kkala]

i want to simplify the navier stokes and continuity equations for cylindrical pipe flow. what i have said is
1. assume 2D instead of 3D flow. but how can i justify this?
2. incompressible flow........p(density)=0
3. isothermal....................t=0
4. steady-state flow.........d/dt=0
these assumptions will simlify these 2 equations significantly but how to justify it i am struggling.
can anyone help. an attachment of the pipe is shown.

Although my understanding is quite limited, have a look at http://en.wikipedia....tokes_equations of wikipedia. It can be helpful.

Edited by kkala, 13 March 2010 - 03:22 PM.