Investigation of surface water behavior during glaze ice accretionMicrovideo observations of glaze ice accretions on 1-in-diameter cylinders in a closed-loop refrigerated wind tunnel were obtained to study factors controlling the behavior of unfrozen surface water during glaze ice accretion. Three zones of surface water behavior were noted, each with a characteristic roughness. The effect of substrate thermal and roughness properties on ice accretions was also studied. The contact angle and hysteresis were found to increase sharply at temperatures just below 0 C, explaining the high resistance to motion of water beads observed on accreting glaze ice surfaces. Based on the results, a simple multizone modification to the current glaze ice accretion model is proposed.
Document ID
19880034852
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hansman, R. John, Jr. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Turnock, Stephen R. (MIT Cambridge, MA, United States)