Laminar natural convection in internally finned horizontal annuli

Journal Article · · Numerical Heat Transfer. Part A, Applications; (United States)

DOI:https://doi.org/10.1080/10407789308902603· OSTI ID:6070763

Chai, J C; Patankar, S V ^[1]

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1. Univ. of Minnesota, Minneapolis, MN (United States). Dept. of Mechanical Engineering

An analysis is made of the laminar natural convection in two internally finned horizontal annuli. The governing equations were solved numerically by a control-volume-based finite difference method. Information about the flow patterns and temperature distributions is presented through velocity vectors, streamline, and isotherm plots. The effects of Rayleigh number and fin height on the Nusselt numbers are presented for two selected fin orientations. Variations of the local Nusselt numbers are presented for two selected fin orientations. Variations of the local Nusselt numbers along the inner cylinder are also presented. In the cases studied, orientations of the internal fins are found to have insignificant effects on the average Nusselt number.

• OSTI ID: 6070763
• Journal Information: Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 24:1; ISSN NHAAES; ISSN 1040-7782
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
CALCULATION METHODS
CONFIGURATION
CONVECTION
ENERGY TRANSFER
FINITE DIFFERENCE METHOD
FINS
FLUID FLOW
HEAT TRANSFER
ITERATIVE METHODS
LAMINAR FLOW
MASS TRANSFER
NATURAL CONVECTION
NUMERICAL SOLUTION
ORIENTATION
SPACE