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Numerical Study of Falling Film Thickness on Horizontal Circular Tube - A CFD Approach

Arun Kumar

The numerical simulation was performed to analyze the film thickness on horizontal circular tube in a falling film evaporator. A complete description of the falling film thickness is obtained. The shape and thickness of the falling film with variation of Reynolds numbers along with tube spacing is computed and compared favorably with the published experimental findings. The volume of fluid (VOF) method is implemented to track the motion of liquid falling film and gas liquid interface in the commercial CFD package where the primary phase is represented by air and the secondary phase by the liquid, Fluent is used for this numerical study.