Investigation on water droplet receding height impacting onto heated carbon surface

Illias, Suhaimi and Hussain, Suhaila and Ishak, Mohamad Shaiful Ashrul and Mustaffa, Mohammad Taufiq and Ismail, Khairul Azwan and Selamat, Salsuwanda and Ani, Mohd Hanafi (2021) Investigation on water droplet receding height impacting onto heated carbon surface. Journal of Mechanical Engineering Research and Developments, 44 (6). pp. 335-341. ISSN 1024-1752

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Abstract

This study investigates the receding water droplet height upon impact on a high temperature carbon surface in the film boiling regime. A 30.0-mm-diameter carbon disc with a height of 8.0 mm was used as the test surface due to its relativity low thermal conductivity compared to the more commonly studied alloy materials. For the water droplet, the diameter and temperature was constant at approximately 4.0 mm and 16.0 °C, respectively. The water temperature was maintained at the required temperature by circulating tap water into the droplet dispenser system. Meanwhile, the impact height was set at 65.0 mm which corresponds to a theoretical impact velocity of 1.129 m/s. A high speed video camera capable of capturing images at 10,000 fps was used to capture the impacting process. From the results obtained, it was found that the experimentally measured residence time was in good agreement with that calculated based on theory. Another important finding from the study was that the surface temperature had no significant effect to the changes in the water droplet height upon impact on the hot carbon surface.

Item Type:	Article (Journal)
Additional Information:	4583/90493
Uncontrolled Keywords:	Water droplet, receding height, carbon surface, high speed video camera
Subjects:	T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Mohd Hanafi Ani
Date Deposited:	02 Jul 2021 10:11
Last Modified:	02 Jul 2021 10:11
URI:	http://irep.iium.edu.my/id/eprint/90493

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