<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'>Hello,<br><br>I am having an issue with one of my simulations, where the flow wants to change directions. A brief description for the domain is:<br><br> - Two inlets, one in the x-direction, the other in the z-direction. <br> - The two inlets "feed into the main domain"... that is I give both an initial condition, and then apply a recycling BC to each individually. <br><br>My question is: Is there a simple fix for this by use of the userf routine in the user file? I haven't used it before. What I ideally would like to do, is apply some pressure drop across the inlets or something to keep the flow from changing directions. I messed around with the initial conditions, and through some tweaking was able to get one of the inlets to work, but would like something more robust.<br><br>Sorry if this doubles up on a previous question, I couldn't find any old messages about this and also I think the archive is down on the website.<br><br>- Michael M.<br><br></div></body></html>