COMSOL: Fluid Flow with Parabolic Velocity

[@marwan_nafea]

The correct equation is V_max*(1-(r/R)^2), where R is the radius of the channel. It is presnted at 4:07.

[@rishabh8732]

Hi Can you please tell How to do the porosity and permeability distribution profile

[@engineeringtraining2024]

Hello, what are the function of the porosity and permeability?

[@rishabh8732]

@@engineeringtraining2024 I have to do it for the chemical injection into core plug. So porosity and permeability will be defined by this. Do you have any variable expression pdf?

[@engineeringtraining2024]

@@rishabh8732 [e-mail]

[@mahrukhamir4494]

Urgent can you please tell me the expression in variable it's very unclear

[@engineeringtraining2024]

u=0.1*(1-(r/1)^0.5)

[@dilyanur753]

Can you write expression again I can't see

[@engineeringtraining2024]

You can see it at 1:09-2 minutes (in the video). Good luck

[@dilyanur753]

@@engineeringtraining2024 it's not visible uztaz

[@dilyanur753]

when you wrote expression video quality not clearly in reason I can't see sorry

[@engineeringtraining2024]

You can write any variable in variable section for example: u=2*r or u=2*(1-(r/2)^2).

[@engineeringtraining2024]

u=0.1*(1-(r/1)^0.5)