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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-469-4

ISBN Online: 978-1-56700-470-0

Second Thermal and Fluids Engineering Conference
April, 2-5, 2017, Las Vegas, NV, USA

NUMERICAL PREDICTIONS OF TRANSIENT COOLING AND PHASE CHANGE OF A FALLING WATER DROPLET IN SUB-ZERO AIR TEMPERATURES

Get access (open in a dialog) pages 3187-3197
DOI: 10.1615/TFEC2017.tpp.017642

摘要

In this paper, transport phenomena and phase change of droplets are investigated for marine icing applications. In Arctic and Sub-arctic regions, the sea spray generated by ship-wave interactions is a major cause of vessel icing. The spray is carried by the wind until it impacts a structure. During the flight, a complex heat transfer process between the droplet and the environment affects the droplet conditions when impacting a vessel. This paper uses numerical methods to develop a two-dimensional axisymmetric air-water multiphase model, where a freely falling droplet is investigated. The effects of droplet’s interior motion, temperature distribution, and the phase change with respect to the sub-zero environmental condition are examined. Fresh and salt water (with constant and variable properties) are considered in this model. This study provides new insights on droplet dynamics associated with droplet shape and motion, as well as the solidification and nucleation processes.