Effects of buoyancy on laminar flow in curved elliptic ducts
- Florida International Univ., Miami (United States)
A numerical investigation of the effects of buoyancy on a fully developed laminar flow in a curved duct with an elliptic cross section is presented. The curved elliptic duct is subjected to thermal boundary conditions of axially uniform heat flux and peripherally uniform wall temperature. The numerically generated boundary-fitted coordinate system is applied to discretize the solution domain of the elliptic duct, and the Navier-Stokes equations and the energy equation, including the curvature ratio, are resolved using the control volume-based finite difference method. The results are displayed graphically and in tabular form to illustrate the buoyancy effect. It is shown that buoyancy acts to increase both the Nusselt number and the friction factor, and changes the distribution of the velocity and the temperature. The results for the curved circular duct with and without buoyancy are compared with the data available in the literature for all cases. 19 refs.
- OSTI ID:
- 6345593
- Journal Information:
- Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Journal Name: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States) Vol. 114:4; ISSN 0022-1481; ISSN JHTRAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
CALCULATION METHODS
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
DUCTS
EQUATIONS
FINITE DIFFERENCE METHOD
FLUID FLOW
FLUID MECHANICS
FRICTION FACTOR
GRASHOF NUMBER
ITERATIVE METHODS
LAMINAR FLOW
MECHANICS
NAVIER-STOKES EQUATIONS
NUMERICAL SOLUTION
NUSSELT NUMBER
PARTIAL DIFFERENTIAL EQUATIONS
SIMULATION