falling droplet deforms unusually- Multiphase

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 December 7, 2012, 13:20 falling droplet deforms unusually- Multiphase #1 New Member   Join Date: Mar 2012 Posts: 6 Rep Power: 5 Hi, I have been trying to simulated water droplet falling on a surface. I got some results. But the deformation while the droplet falls is unusual. I am giving links to three videos for three cases I considered 1. VOF+Level Set - with surface tension - with wall adhession (https://www.youtube.com/watch?v=P4VkHX9UYeE) 2. VOF+Level Set - with Surface Tension - no wall Adhession (https://www.youtube.com/watch?v=4UVQ-AM-vkY) 3. VOF (no Level Set) - without surface tension - no wall adhession (https://www.youtube.com/watch?v=rtVbNEHD6zE) For the first two cases, The BC's are: "top wall = pressure inlet" and "side walls = pressure outlet" and "bottom wall = wall". Volume fraction parameter: implicit Implicit Body Force Formulation: No Pressure-Velocity Coupling: Coupled (with volume fraction) Pressure: Body force weighted Volume Fraction: QUICK Level Set: QUICK For the third case, The BC's are: "top wall = pressure inlet" and "side walls = wall" and "bottom wall = wall". Volume fraction parameter: Explicit Implicit Body Force Formulation: Yes Pressure-Velocity Coupling: Coupled Pressure: PRESTO! Volume Fraction: Geo-Reconstruct Can anyone help me regarding regarding my queries? They are, 1. How can I assign initial velocity for the droplet? 2. How can I get more realistic deformation? 3. How can I apply wetted / non-wetted surface condition? 4. How do I implement dynamic contact angle? Thank you very much

 December 10, 2012, 16:54 #2 New Member   Join Date: Mar 2012 Posts: 6 Rep Power: 5 Can anyone help me with answers?

 July 10, 2013, 04:25 #3 New Member   Join Date: Jul 2013 Posts: 12 Rep Power: 4 Hello, I am also working on similar Project on wetting Dynamics of a droplet. Can you send me your files, so that I can recommend something mehmet.yigit.balta@gmail.com

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