A Reexamination of Riming on Thin Ice Plates

R. L. Pitter Department of Environmental Technology, Oregon Graduate Center, Beaverion 97005

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Abstract

The investigation of Pitter and Prappacher (1974) was reexamined including the effect of changing drag on the accelerating water drops and the effect of the drop flow field on the ice crystal. The present results indicate that drops greater than 10 µm collide with ice crystals at higher efficiencies than found earlier. The annular collision domain near the small drop cutoff size for any given ice crystal size was not significantly changed.

Abstract

The investigation of Pitter and Prappacher (1974) was reexamined including the effect of changing drag on the accelerating water drops and the effect of the drop flow field on the ice crystal. The present results indicate that drops greater than 10 µm collide with ice crystals at higher efficiencies than found earlier. The annular collision domain near the small drop cutoff size for any given ice crystal size was not significantly changed.

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