Thermal developing flow in a curved duct with an elliptic cross section
- Florida International Univ., Miami, FL (United States). Dept. of Mechanical Engineering
In this paper, laminar flow and heat transfer are investigated in the thermal entrance region of a curved elliptic duct. The elliptic duct is subjected to constant wall temperature. The solutions are numerically obtained by employing the control volume based, finite difference method via generation of a boundary-fitted coordinate system. The curvature ratio effect is also included in the formulation of the governing equations. Temperature distribution and local Nusselt numbers are obtained and presented graphically for various Prandtl numbers, Dean numbers, and minor- to major-axis ratios. It is observed that one-eyed isotherms appear in the process of temperature development. Effects of the Dean number and the Prandtl number on heat transfer are discussed in detail. Finally, the asymptotic Nusselt numbers are obtained. Furthermore, accuracy of the present calculations is validated by comparison with some published data available in the open literature. Excellent agreement has been obtained for all cases.
- OSTI ID:
- 5951815
- Journal Information:
- Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 24:2; ISSN 1040-7782; ISSN NHAAES
- Country of Publication:
- United States
- Language:
- English
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