Iso-clip time step updating

landerfwc · June 21, 2014, 04:47

Hi all,

I am simulating a water droplet movement along an inclined plane. I am using VOF model for this. To get some results, I need to know XY plot of droplet velocity and position depending of flow time.

There is a possibility to export data and analyze frame-after-frame and find out the velocity, but I consider this option to be quite lengthy. What I intended to do was creating an Iso-clip surface, of volume fraction from 0.5 to 1. Then I created a Surface monitor, showing an Average of vertex values and Maximum X-coordinate within the Iso-clip surface.

The problem is, that while the droplet moves, the Iso-clip stays the same (maximum mesh X-coordinate is not changing). So what I need to do is make Fluent to update created Iso-clip every time step. Is that possible? Or, is there any different way to find out the velocity and position of droplet?

Thank you for your replies,

Have a nice day!

landerfwc · June 22, 2014, 02:40

So I am going to answer by myself. I defined a Macro in /Calculation activities/Execute commands which computes an Iso-clip surface every time step. It seems to be working right yet.

June 21, 2014, 04:47	Iso-clip time step updating	#1
landerfwc New Member Join Date: Jun 2014 Posts: 17 Rep Power: 11	Hi all, I am simulating a water droplet movement along an inclined plane. I am using VOF model for this. To get some results, I need to know XY plot of droplet velocity and position depending of flow time. There is a possibility to export data and analyze frame-after-frame and find out the velocity, but I consider this option to be quite lengthy. What I intended to do was creating an Iso-clip surface, of volume fraction from 0.5 to 1. Then I created a Surface monitor, showing an Average of vertex values and Maximum X-coordinate within the Iso-clip surface. The problem is, that while the droplet moves, the Iso-clip stays the same (maximum mesh X-coordinate is not changing). So what I need to do is make Fluent to update created Iso-clip every time step. Is that possible? Or, is there any different way to find out the velocity and position of droplet? Thank you for your replies, Have a nice day!

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June 22, 2014, 02:40		#2
landerfwc New Member Join Date: Jun 2014 Posts: 17 Rep Power: 11	So I am going to answer by myself. I defined a Macro in /Calculation activities/Execute commands which computes an Iso-clip surface every time step. It seems to be working right yet.