Multicellular natural convection of a low Prandlt number fluid between horizontal concentric cylinders

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Numerical Heat Transfer. Part A, Applications; (United States)

OSTI ID:5354900

Yoo, Joosik; Choi, Jun Young; Kim, Moonuhn ^[1]

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1. Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of). Dept. of Mechanical Engineering

Two-dimensional natural convection of a fluid of low Prandtl number (Pr = 0.02) in an annulus between two concentric horizontal cylinders is numerically investigated in a wide range of gap widths. For low Grashof numbers, a steady unicellular convection is obtained. Above a transition Grashof number that depends on the gap width, a steady bicellular flow occurs. With further increase of the Grashof number, steady or time-periodic multicellular convection occurs, and finally, complex unsteady convective flow appears. A plot is presented that predicts the type of flow patterns for various combination of gap widths and Grashof numbers.

• OSTI ID: 5354900
• Journal Information: Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 25:1; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
CONFIGURATION
CONVECTION
DATA
ENERGY TRANSFER
FLUID FLOW
FLUIDS
HEAT TRANSFER
INFORMATION
MASS TRANSFER
NATURAL CONVECTION
NUMERICAL DATA
SPACE
THEORETICAL DATA