The numerical modelling of falling film thickness flow on horizontal tubes

Hassan, I. A. and Sadikin, A. and Mat Isa, N. (2017) The numerical modelling of falling film thickness flow on horizontal tubes. In: 7th International Conference on Mechanical and Manufacturing Engineering, Sustainable Energy Towards Global Synergy, 1–3 August 2016, Jogjakarta, Indonesia.

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Official URL: https://doi.org/10.1063/1.4981161

Abstract

This paper presents a computational modelling of water falling film flowing over horizontal tubes. The objective of this study is to use numerical predictions for comparing the film thickness along circumferential direction of tube on 2-D CFD models. The results are then validated with a theoretical result in previous literatures. A comprehensive design of 2-D models have been developed according to the real application and actual configuration of the falling film evaporator as well as previous experimental parameters. A computational modelling of the water falling film is presented with the aid of Ansys Fluent software. The Volume of Fluid (VOF) technique is adapted in this analysis since its capabilities of determining the film thickness on tubes surface is highly reliable. The numerical analysis is carried out under influence of ambient pressures at temperature of 27ºC. Three types of CFD numerical models were analyzed in this simulation with inter tube spacing of 30 mm, 20 mm and 10 mm respectively. 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 0.53 mm, 0.58 mm, and 0.63 mm.

Item Type:Conference or Workshop Item (Paper)
Subjects:Q Science > QC Physics
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Energy and Thermofluid Engineering
ID Code:9471
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:13 Aug 2018 11:16
Last Modified:13 Aug 2018 11:16

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