Gas influence in drop impact on dry solid substrates
نویسندگان
چکیده
A numerical study by the code GERRIS of drop impact onto a solid surface is presented. It is shown that under the incompressible assumption, drop impact can still perform different behaviors by changing the density or viscosity of surrounding gas, the splash can be suppressed for small gas density or viscosity and a no-vertical frontier exists between splash and non-splash. It is suggested that some aerodynamic instability can be crucial in the mechanism of splashing.
منابع مشابه
Drop splashing on a dry smooth surface.
The corona splash due to the impact of a liquid drop on a smooth dry substrate is investigated with high-speed photography. A striking phenomenon is observed: splashing can be completely suppressed by decreasing the pressure of the surrounding gas. The threshold pressure where a splash first occurs is measured as a function of the impact velocity and found to scale with the molecular weight of ...
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