TY - JOUR 
A1 - Zamora Parra, Blas
AU - Sánchez Kaiser, Antonio
AU - Viedma Robles, Antonio
T1 - On the effects of Rayleigh number and inlet turbulence intensity upon the buoyancy-induced mass flow in sloping and convergent channels
Y1 - 2008
SN - 0017-9310
UR - http://hdl.handle.net/10317/602
AB - A numerical study on the mass flow rate induced by natural convection in a sloped converging channel for different inclination and convergence angles with summetrical heating has been reported. Two-dimensional, laminar, transitional and turbulent different general purpose codes: Fluent and Phoenics. In transitional and turbulent cases, the low-Reynolds k-w turbulence model has been employed. Special emphasis has been carried out, for turbulent regime, on the systematic comparisons of computational results with experimental and numerical data taken from literature, considering the influence of inlet turbulence intensity upon transitional point. Numerical results were obtained for wide and not yet covered ranges of the modified Rayleigh number varying from 10 high at (-2) to 10 high at (12), the aspect ratio between 0.03 to 0.25, the converging angle from 1º to 30º and sloping angle from 0º to 60º. A generalized crrelation for the non-dimensional mass flow rate has been obtained from numerical results in a channels with isothermal plates, for symmeric heating conditions.
KW - Mecánica de Fluidos
KW - Corrientes de convección
KW - Canales de pendientes convergentes
KW - Intensidad de turbulencias
KW - Convective flows
KW - Sloped converging channels
KW - Turbulence intensity
LA - eng
PB - Elsevier Science
ER -