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Study of a laminar falling film flowing over a wavy wall column. I: Numerical investigation of the flow pattern and the coupled heat and mass transfer. II: Experimental validation of hydrodynamic model. (English) Zbl 0999.76019

From the summary: Flow pattern and heat and mass transfer characteristics for a film flowing over a vertical wavy column are numerically investigated in a laminar flow regime. In our approach, the heat and mass transfer coefficients are avoided in order to include hydrodynamics directly in heat and mass transfer rates. As a consequence, the numerical model is decomposed into two steps. Firstly, the flow pattern for a film with a free interface is developed. Secondly, heat and mass transfer are investigated with the incorporation of velocity fields. The heat and mass transfer coefficients are shown to increase in laminar flows.

MSC:

76A20 Thin fluid films
76D05 Navier-Stokes equations for incompressible viscous fluids
76M25 Other numerical methods (fluid mechanics) (MSC2010)
76-05 Experimental work for problems pertaining to fluid mechanics
80A20 Heat and mass transfer, heat flow (MSC2010)
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