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Numerical simulation of falling film thickness flowing over horizontal tubes

Hassan, I. A. and Sadikin, A. and Isa, N. M. (2017) Numerical simulation of falling film thickness flowing over horizontal tubes. ARPN Journal of Engineering and Applied Sciences, 12 (10). pp. 3046-3053. ISSN 18196608

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Abstract

This paper presents a numerical simulation of water falling film flowing over horizontal tubes. The objective of this study is to use numerical predictions for comparing the thickness of falling liquids film on CFD models with a verification of previous literatures. A comprehensive design of 3-D models have been developed and validated by the real application of the falling film evaporator as well as experimental parameters often used in the past literatures. A computational fluid dynamic simulation of the water falling film is presented using the Volume of Fluid (VOF) technique. The Volume of Fluid (VOF) technique is capable of determining the thickness of falling liquids film on tubes surface under the influence of the pitch tube and at low pressures. Four types of CFD numerical models with different pitch tubes of 70.05 mm, 59.05 mm, 47.35 mm and 26.85 mm were used in this simulation. The use of a numerical simulation tool on water falling film has resulted in a detailed investigation of film thickness. Based on the numerical simulated results, it is found that the average values of water film thickness for each model are 0.1858 mm, 0.1904 mm, 0.2052 mm, and 0.2200 mm.

Item Type: Article
Uncontrolled Keywords: CFD; falling film; falling film thickness; horizontal tubes; VOF
Subjects: Q Science > QC Physics
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Energy and Thermofluid Engineering
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 13 Aug 2018 03:14
Last Modified: 13 Aug 2018 03:14
URI: http://eprints.uthm.edu.my/id/eprint/9459
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