Vortex instability of natural convection flow over horizontal and inclined plates with uniform surface heat flux

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Numer. Heat Transfer; (United States)

DOI:https://doi.org/10.1080/10407798608552175· OSTI ID:7020654

Tien, H C; Chen, T S; Armaly, B F

The thermal transport process depends to a large extent on the flow regime, taking into account laminar or turbulent flow characteristics. The present investigation is concerned with the analysis of the vortex instability of natural convection flow over inclined, upward-facing, heated plates with uniform surface heat flux. The angle of inclination from the horizontal is in the range from 0 to close to 90 deg. The main flow velocity and the thermal fields are considered, and the formulation of the stability problem is discussed. A finite-difference scheme is employed in the solution of the system of equations for the main flow and the thermal fields. Neutral stability curves and critical Grashof numbers are obtained to determine the stability and instability domains and the minimum Grashof numbers for the incipience of instability of the flows at various angles of inclination. 22 references.

• Research Organization: Missouri-Rolla Univ., Rolla
• OSTI ID: 7020654
• Journal Information: Numer. Heat Transfer; (United States), Journal Name: Numer. Heat Transfer; (United States) Vol. 9:6; ISSN NUHTD
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASYMPTOTIC SOLUTIONS
BOUNDARY LAYERS
CONVECTION
ENERGY TRANSFER
FLUID FLOW
GRASHOF NUMBER
HEAT FLUX
HEAT TRANSFER
ITERATIVE METHODS
LAMINAR FLOW
LAYERS
MASS TRANSFER
NATURAL CONVECTION
NUMERICAL SOLUTION
PRANDTL NUMBER
RUNGE-KUTTA METHOD
STABILITY
TURBULENT FLOW
VORTICES