CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Laminar Flow and Particle Track: Inconsistent? (http://www.cfd-online.com/Forums/fluent/43832-laminar-flow-particle-track-inconsistent.html)

Domenico February 20, 2007 15:47

Laminar Flow and Particle Track: Inconsistent?
 
Hi guys,

I am running a very simple laminar case in a straight annular pipe, and I did generate a solution using velocity inlet boundary condition and a pressure outlet b.c.

I double checked the velocity profile which match very well the analytical solution available in textbooks, but, surprisingly, when I tried to inject particles at the inlet...well...such particles don't quite follow the velocity streamline. It seems they cluster annular regions of the reactor. And I don't have particle closed to the external wall.

FYI, I defined particle with the same density of the water and I did not include any gravity effect. So, I can't undestand particles shouldn't follow streamlines...

Any thoughts?



All times are GMT -4. The time now is 00:08.