Implementation and validation of the mathematical model of surface tension into CFD wall film module

Baleta, Jakov and Vujanović, Milan and Pachler, Klaus and Duić, Neven (2014) Implementation and validation of the mathematical model of surface tension into CFD wall film module. = Implementation and validation of the mathematical model of surface tension into CFD wall film module. In: Joint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014, 20-25.07.2014., Barcelona; Spain.

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Abstract

Horizontal liquid film flow sheared by an external air flow field is encountered in many engineering applications. Taking into account its physical complexity and high cost of experimental investigation, numerical simulations are nowadays considered as a valuable alternative. They are becoming a useful tool for detailed understanding of complex flow characteristics and transport phenomena, especially in situations where experimental measurements are infeasible or too expensive. The focus of this paper is the implementation and validation of a mathematical model of surface tension effects within the existing numerical framework in order to achieve a more accurate description of the liquid wall film phenomena. After literature review, optimum mathematical model has been chosen and implemented in commercial computational fluid dynamics (CFD) code. Validation was carried out using a well established case of isothermal droplet spreading for which there are analytical expressions. Comparison of simulation results with non-dimensional droplet profile shows excellent agreement with analytical results and gives confidence for commercial application of implemented model.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Computational mechanics; Drops; Dynamics; Fluid dynamics; Liquid films; Liquids; Surface tension; Capillary force; Commercial applications; Computational Fluid Dynamics codes; Droplet spreading; Engineering applications; Experimental investigations; Surface tension effects; Wall-films; Computational fluid dynamics
Subjects: TECHNICAL SCIENCE
Divisions: 500 Department of Energy, Power Engineering and Environment > 510 Power Engineering and Energy Management Chair
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (06.09.2017.)
Date Deposited: 07 Apr 2015 12:22
Last Modified: 06 Sep 2017 12:30
URI: http://repozitorij.fsb.hr/id/eprint/3524

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