[jzyk1212]

I need help. In the first picture I have correctly implemented a parabolic inlet velocity profile for a pipe. Everything is the same for the second picture however the inlet profile is different. Can someone help me on this please thanks.





Screenshot 2020-12-31 at 18.06.38.pngScreenshot 2020-12-31 at 18.07.20.png

[Aeronautics El. K.]

Originally Posted by jzyk1212

I need help. In the first picture I have correctly implemented a parabolic inlet velocity profile for a pipe. Everything is the same for the second picture however the inlet profile is different. Can someone help me on this please thanks.

Attachment 81862Attachment 81863

Your coordinate systems are different.

[jzyk1212]

Originally Posted by Aeronautics El. K.

Your coordinate systems are different.

How can i fix this? thanks

[Aeronautics El. K.]

Originally Posted by jzyk1212

I need help. In the first picture I have correctly implemented a parabolic inlet velocity profile for a pipe. Everything is the same for the second picture however the inlet profile is different. Can someone help me on this please thanks.

Attachment 81862Attachment 81863

Originally Posted by jzyk1212

How can i fix this? thanks

To begin with, this doesn't give much information on what you've done. Which one is the inlet, which is the outlet?

Then, you've used a cartesian coordinate system but based on what you've asked in other threads, you seem to have implemented a function that needs a cylindrical coordinate system.

Then, even if you have defined successfully the parabolic profile for one inlet, you need to repeat this if you have multiple inlets that each one has a local (cylindrical) coordinate system.

Take the time to analyse your problem and think and understand what you're doing and what you need to adapt.

[jzyk1212]

Originally Posted by Aeronautics El. K.

To begin with, this doesn't give much information on what you've done. Which one is the inlet, which is the outlet?

Then, you've used a cartesian coordinate system but based on what you've asked in other threads, you seem to have implemented a function that needs a cylindrical coordinate system.

Then, even if you have defined successfully the parabolic profile for one inlet, you need to repeat this if you have multiple inlets that each one has a local (cylindrical) coordinate system.

Take the time to analyse your problem and think and understand what you're doing and what you need to adapt.

The right side are the inlets for both pictures and there is only one inlet in both too. I have left out that a line probe was used in the first picture, i assume thats why it does not work correct?

[Aeronautics El. K.]

Originally Posted by jzyk1212

The right side are the inlets for both pictures and there is only one inlet in both too. I have left out that a line probe was used in the first picture, i assume thats why it does not work correct?

Plot the velocity contours and vectors on the inlet face and see what happens.