Developing flow of mixed convection in a vertical rectangular duct with one heating wall
Journal Article
·
· Numerical Heat Transfer. Part A, Applications
- Tatung Inst. of Tech., Taipei (Taiwan, Province of China). Dept of Mechanical Engineering
Heat transfer and flow patterns of laminar mixed convection in the developing region of a vertical rectangular duct with one heating wall have been investigated numerically in this study. The parabolic boundary layer model is adopted to predict the three-dimensional buoyancy-assisted flow field. Governing equations are solved by using the SIMPLEC method coupled with a forward marching, implicit finite difference scheme. The velocity and temperature distributions as well as the streamwise variations of local heat flux and fluid pressure are calculated under various geometric parameters. Results show that the flow characteristics are significantly dependent on the buoyancy effect (Gr/Re), the aspect ratio of cross section of duct (B), and Prandtl number (Pr). The numerical solutions obtained have been compared and verified with existing studies. Meanwhile, the analytical solutions of fully developed flow recently reported [8] are found to exactly portray the behavior of flow far downstream.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 143734
- Journal Information:
- Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 4 Vol. 24; ISSN 1040-7782; ISSN NHAAES
- Country of Publication:
- United States
- Language:
- English
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