Abstract

This paper presents an experimental investigation of the freezing process of fresh and saline water droplets impacted upon a supercooled surface. Freshwater solidification is a common and highly investigated phenomenon due to its application in the aircraft industry and power transmission lines. The freezing behavior of salt water, mostly encountered in marine vessels and offshore structures, is very complicated compared to fresh water due to the salt content. A comparative effort to analyze the difference and similarity between these two diverse forms are rare due to its application in contrasting industries. The present study correlates the differing ice accretion behaviors of salt and fresh water. The experiments involve the measurement of thermal distribution and physical spreading of fresh and saline water droplets as they strike and solidify on a super-cooled surface. The results show that presence of salt content in water affects the cooling time, splash area and cooling pattern for droplets. The new experimental data provides new insights on the fundamentals of sea water icing and is key to predicting marine icing in offshore arctic and sub-arctic environments.

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