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Author Iacovides, H. ♦ Launder, B. E.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ENGINEERING ♦ DUCTS ♦ FLOW MODELS ♦ HYDRAULICS ♦ THERMODYNAMICS ♦ HEAT FLUX ♦ HEAT TRANSFER ♦ MATHEMATICAL MODELS ♦ NUSSELT NUMBER ♦ REYNOLDS NUMBER ♦ ROTATION ♦ TURBULENCE ♦ TURBULENT FLOW ♦ ENERGY TRANSFER ♦ FLUID FLOW ♦ FLUID MECHANICS ♦ MECHANICS ♦ MOTION ♦ Engineering- Heat Transfer & Fluid Flow
Abstract Finite-volume computations are reported for the fully developed turbulent flow through a square-sectioned duct rotating about an axis perpendicular to that of the duct at a Reynolds number of 5 x 10/sup 4/. Two turbulence models are used to represent the turbulent stresses and heat fluxes in the main part of the flow: the standard kappa-epsilon eddy-viscosity model (EVM) and an algebraic second-moment closure (ASM). In the semiviscous sublayer adjacent to the wall a generalization of Van Driest's version of the mixing-length hypothesis is adopted. Quadratic upstream discretization of momentum and energy convection is used with grid densities up to 65 x 127. The computed behavior is in close agreement with experimental data at low spin rates. At a Rossby number of 0.2, for which no data are available, the predictions show a complex secondary flow behavior with two counterrotating secondary eddies present. At this spin rate the mean level of Nusselt number is some 40% higher than in a nonrotating passage at the same Reynolds number, while there is a 2:1 variation in level circumferentially.
Educational Use Research
Learning Resource Type Article
Publisher Date 1987-01-01
Publisher Place United States
Journal Numer. Heat Transfer
Volume Number 12
Issue Number 4
Organization Dept. of Mechanical Engineering, Univ. of Manchester, Institute of Science and Technology, Manchester M60 1QD (GB)


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