Learning Forum

[amirmohammad.rajabi]

Hello, 

I am simulating the flow of water through a pipe with a vertical and horizontal inlet and outlet respectively. The water will flow through the pipe and eventually hits the end wall and goes out. I used the k-omega model since the flow is turbulent. I would like to look at the trajectory of the water droplets starting from the inlet. For this, I used the pathlines feature in Ansys Fluent. The problem that I am having is that when I set the starting surface to inlet, there are a number of particles that start from the end wall. I don't know where they are coming from and what causes this. Any help is greatly appriciated.

 

dThe red pathlines are the ones that start from the inlet and the other ones are what starts from the end wall eventhough I have set the starting surface to inlet.

[Rob]

Pathlines will follow the flow streamlines. Droplets would be the DPM model, but as you're using water as the continous fluid I suspect you want pathlines. 

In the above you've plotted by stream ID. Replot and colour by age. Assuming you only have one surface selected, and have set the surface assignment correctly you should only release pathlines from one surface.