[Hossein1]

I have an initial coarse mesh (0.2 mm) and I need to create a water droplet with r=1.50 mm on it. I need my droplet to have a very smooth surface. That's why in the first step I create a 'region' of r=1.45 mm and patch it onto my coarse mesh. Then I 'mark and adapt' the first level of mesh refinement, and then patch a region of r=1.47 mm to make droplet interface finer. Again adapt and patching r=1.48, and the last time after adapting, I patch the final water radius r=1.50 mm. This method works pretty well, but sometimes it makes the surface smoother up to level 2, and when I apply the 3rd refinement and patch the slightly bigger droplet, the edges become jagged again while logically it shouldn't (Please see the attached picture). Even if you save only the mesh after 3 levels of refinement, and then open it and patch the droplet of r=1.5 mm on it, the edges become jagged again.

Do you know any better method for creating very smooth water droplets in a coarse initial mesh?