Heat Transfer and Skin Friction for Turbulent Boundary-Layer Flow Longitudinal to a Circular Cylinder
An analysis was carried out for the turbulent velocity and thermal boundary layers that develop along a cylinder whose axis is parallel to the free- stream flow. Local and average friction factors are calculated as functions of the length Reynolds number Rex for various cylinder sizes (characterized by the radius Reynolds number Rero). For corresponding flow conditions, the friction factor for a cylinder always exceeds that for the flat plate. Local heattransfer coefficients corresponding to the case of uniform wall heat flux were obtained for Prandtl numbers of 0.7 and 6. As with the friction factors, the cylinder heat-transfer coefficients exceed those for the flat plate. This effect of the cylindrical geometry on heat transfer diminishes with increasing Prandtl number.
- Research Organization:
- Univ. of Minnesota, Minneapolis
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-016242
- OSTI ID:
- 4748448
- Journal Information:
- Journal of Applied Mechanics, Journal Name: Journal of Applied Mechanics Journal Issue: 1 Vol. 30; ISSN 0021-8936; ISSN JAMCAV
- Publisher:
- ASME
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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