Sling effect in collisions of water droplets in turbulent clouds

Abstract

We describe and evaluate the contribution of sling effect into the collision rate of the same-size water droplets in turbulent clouds. We show that already for Stokes numbers exceeding 0.2 the sling effect gives a contribution comparable to Saffman-Turner contribution, which may explain why the latter consistently underestimates collision rate (even with the account of preferential concentration).

7 pages, 6 figures; preprint submitted to Journal of Atmospheric Sciences

References in corpus (3)

• Heavy particle concentration in turbulence at dissipative and inertial scales
• Caustic activation of rain showers
• Advective collisions

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