Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Modeling Gravity-Driven Rivulet on a Monotonically Varying Incline
Isoz M.
Abstract:
Rivulet type flow is of great importance in many engineering areas including the packed columns design or heat exchangers calculations. We concentrate on the case of a rivulet owing in the azimuthal direction from top to bottom of a large horizontal cylinder. A direct numerical simulation of the problem is compared to simplified solutions of the Navier-Stokes equations for the cases of a rivulet with (i) constant contact angle and varying width, (ii) constant width and varying contact angle, and (iii) varying both contact angle and width. Such comparison sheds light on the applicability of simplified models for a solution of real-life problems.
Keywords:
rivulet, fluid dynamics, liquid spreading

Fulltext: PDF DOI: http://dx.doi.org/10.14311/TPFM.2016.011

In Proceedings Topical Problems of Fluid Mechanics 2016, Prague, 2016 Edited by David Šimurda and Tomáš Bodnár, pp. 75-84 ISBN 978-80-87012-58-1 (Print) ISSN 2336-5781 (Print)