The icing of an unheated, nonrotating cylinder. Part II: icing wind tunnel experiments.

Abstract

An experimental investigation of icing on non-rotating cylinders, under both wet and dry conditions was undertaken. Airspeeds of 30, 61 and 122 m s-1 appropriate to aircraft icing, liquid water contents of 0.4, 0.8 and 1.2 g m-3 and temperatures of -15, -8 and -5oC were explored. Dry accretions were lenticular or 'spearhead' shapes, while wet accretions tended to develop 'horns' and stagnation line depressions as the result of the runback of unfrozen water away from the stagnation line and its subsequent freezing further around the perimeter of the cylinder.-from Authors