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Type of publication: Straipsnis recenzuojamoje užsienio tarptautinės konferencijos medžiagoje / Article in peer-reviewed foreign international conference proceedings (P1d)
Field of Science: Energetika ir termoinžinerija / Energetics and thermal engineering (T006)
Author(s): Šinkūnas, Stasys;Gylys, Jonas;Sirvydas, Povilas Algimantas
Title: Study of thermohydromechanical processes in gravitational liquid film flow
Is part of: ICEE 2006 [elektroninis išteklius] : International Conference on Energy and Environment : Recent Trend and Issues in Energy and Environment, 28-30 August, 2006, Kajang, Selangor, Malaysia. Tenaga : Universiti Tenaga Nasional, 2006
Extent: p. 68-72
Date: 2006
Keywords: Liquid film;Cross curvature;Shear stress;Entrance region;Heat transfer
Abstract: The purpose of present study is to obtain a comprehension for the momentum and heat transfer developments in gravitational liquid film flow. A simple model liquid film flow on a vertical surface with cross curvature based on force equilibrium equations is presented in the paper. Theoretical presumptions concerned with variation of shear stress in the gravitational laminar film are discussed. The variation dependence of shear stress in the film upon the different cross curvature values is shown in the study. Experimental investigation of heat transfer in the entrance region for the turbulent film was carried out as well. The description of experimental set-up is presented. The experiments were performed with water flowing down a surface of vertical tube. The results of experiments are discussed with respect to the local heat transfer dependence upon Reynolds number and initial velocity of the film. Heat transfer stabilization length was determined experimentally
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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