Flows in vertical channels with asymmetric wall temperatures and including situations where reverse flows occur

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3250592· OSTI ID:5465193

Ingham, D B; Keen, D J ^[1]; Heggs, P J ^[2]

---

1. Univ. of Leeds (England)
2. Univ. of Bradford (England)

Numerical investigations are conducted into steady laminar combined convection flows in vertical parallel plate ducts with asymmetric constant wall temperature boundary conditions. The streamwise diffusion terms in the governing equations are neglected and the resulting parabolic equations are expressed in an implicit finite difference scheme and solved using a marching technique. In certain situations the combination of the size of the ratio {vert bar}Gr/Re{vert bar} and the difference in temperature between the walls of the duct is such that the fully developed flow profile, as they streamwise coordinate tends toward infinity, includes reverse flow in the vicinity of the cold wall. Techniques first used in a previous study are employed in finding, a solution through the whole domain of the fluid for those situations involving reverse flow in the fully developed region. Comparisons with existing data near the duet entrance and far along the duct show very good agreement.

• OSTI ID: 5465193
• Journal Information: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transcations of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 110:4A; ISSN 0022-1481; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOUNDARY CONDITIONS
CALCULATION METHODS
CONVECTION
COOLING
DUCTS
ELECTRONIC EQUIPMENT
ENERGY TRANSFER
EQUIPMENT
FINITE DIFFERENCE METHOD
FLUID FLOW
GRASHOF NUMBER
HEAT TRANSFER
ITERATIVE METHODS
LAMINAR FLOW
MASS TRANSFER
NUMERICAL SOLUTION
REYNOLDS NUMBER