Turbulent momentum and heat transport in square-sectioned ducts rotating in orthogonal mode

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Numer. Heat Transfer; (United States)

DOI:https://doi.org/10.1080/10407798708551437· OSTI ID:5096928

Iacovides, H; Launder, B E

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.

• Research Organization: Dept. of Mechanical Engineering, Univ. of Manchester, Institute of Science and Technology, Manchester M60 1QD (GB)
• OSTI ID: 5096928
• Journal Information: Numer. Heat Transfer; (United States), Journal Name: Numer. Heat Transfer; (United States) Vol. 12:4; ISSN NUHTD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
DUCTS
ENERGY TRANSFER
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
HEAT FLUX
HEAT TRANSFER
HYDRAULICS
MATHEMATICAL MODELS
MECHANICS
MOTION
NUSSELT NUMBER
REYNOLDS NUMBER
ROTATION
THERMODYNAMICS
TURBULENCE
TURBULENT FLOW