[Gfs-devel] Fw: droplet impacting on a dry solid surface

[HE, He CM [ME]]

Dear Stephane, 

I would like to ask for some help about the droplet impacting on a dry solid surface. 

1. Firstly, it is the boundary condition, how the VOF tracer variable to be assigned on the default symmetric boundary at every time step?

  Are the VOF tracer values on the boundary assigned according to the intermediately interior cells?

2. If I use default boundary (with V=0 if the boundary is vertical) as no-slip boundary condition, do I need to care about the VOF tracer value on the boundary?

3. In terms of the contact angle, does it workable only when the cells close to the solid surface with a non-zero VOF tracer value? Becasue I find when I implement VOFTracer=1 on the boundary condition every time step, the different contact angles seem to yield the same resluts. 

Thank you in advance! 

Best Regards,

Andy He

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From: HE, He CM [ME]
Sent: Tuesday, May 3, 2016 6:33 PM
To: gfs-...@lists.sourceforge.net; Gfs-...@lists.sourceforge.net
Subject: droplet impacting on a dry solid surface

 

Dear Stephane, 

I would like to ask for some help about the droplet impacting on a dry solid surface. 

1. Firstly, it is the boundary condition, how the VOF tracer variable to be assigned on the default symmetric boundary at every time step. 

 Does the value on the boundary 

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[HE, He CM [ME]]