Laminar and turbulent natural convection heat transfer from horizontal cylinders
Thesis/Dissertation
·
OSTI ID:5453009
Laminar and turbulent natural convection flows induced by horizontal cylinders were investigated numerically. A finite difference scheme based on the integration of the governing equations over finite cells was applied to the two-dimensional steady-state (time averaged) problems. A two-equation turbulence model was extended to include the effects of buoyancy and applied for predicting time averaged flow patterns, temperatures, turbulence intensity and turbulent viscosity in recirculating natural convection flows. Natural convection around horizontal cylinders within confining walls and in interacting flow fields was treated by a system of overlapping Cartesian and cylindrical polar grid systems, the latter being used in the neighborhood of the cylinders and former in the remaining part of the flow. The solutions of the various problems considered were compared with experimental results and other numerical and analytical solutions to the extent that they were available in the literature.
- OSTI ID:
- 5453009
- Country of Publication:
- United States
- Language:
- English
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