University of Hertfordshire

Experimental Study of the Dynamics of Water Film on an Aluminum Substrate under Wind Shear

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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Original languageEnglish
Title of host publication9th AIAA Atmospheric and Space Environment Conference
Subtitle of host publicationAIAA AVIATION Forum
Place of PublicationReston, VA
PublisherAerospace Research Central
Number of pages9
ISBN (Electronic)978-1-62410-496-1
Publication statusPublished - 31 May 2018
EventAIAA Atmospheric and Space Environments Conference - Denver, United States
Duration: 5 Jun 20179 Jun 2017
Conference number: 9th


ConferenceAIAA Atmospheric and Space Environments Conference
Country/TerritoryUnited States
Internet address


Aircraft icing poses a serious threat to flight safety. Unfrozen parts of impinging water on the surface of the aircraft will run back under the effect of high-speed airflow, altering liquid distribution and heat transfer characteristics. In this paper we conducted a series of experiments over a wide range of wind speed (Ua = 17.8~52.2 m/s), film Reynolds number (Ref = 26~128) and inclined angle (α = 0°, ±30°, ±45°) to investigate the dynamics of thin water film on an Aluminum substrate. The superficial morphology of the water film were investigated by high-speed camera, and the instantaneous film thicknesses were measured by a laser focus displacement meter based on a confocal chromatic technique. The interface between the gas and liquid phases consisted of underlying thin film and multiple scaled fluctuations. The measured time-averaged filim thickness data agrees with previous model predictions. Based on the experimental results, a relationship between the film thickness and the wind speed, film Reynolds number, inclined angle was proposed. A new correlation to calculate the interfacial shear stress and superficial roughness on the wavy surface is also suggested.


This document is the Accepted Manuscript version of a paper presented at the 9th AIAA Atmospheric and Space Environments Conference, 5-9 June 2017, Denver, Colorado. Content in the UH Research Archive is made available for personal research, educational, and non-commercial purposes only. Unless otherwise stated, all content is protected by copyright, and in the absence of an open license, permissions for further re-use should be sought from the publisher, the author, or other copyright holder.

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