Unwanted diffusion of level set interface

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Hi

I have been trying to model the droplet formation through an orifice using the level set method. I have been using the reinitialization value as the maximum speed of the droplet and default interface thickness. I have used extremely fine meshing and added 2 times refinement to the domain making the mesh very small. But still the interface is diffused and the droplet interface is not properly captured.

Currently the interface thickness is coming around 10-20 times greater than the mesh size. Manually giving the interface thickness is leading to some artifacts while solving and sharp edges in the final result.

I have attached the screen shots of the mesh and the diffused interface along with the question.

Kindly suggest some solutions for the same.



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