Heat transfer from a circular cylinder rotating about an orthogonal axis in quiescent air

✍ Scribed by B. V. S. S. S. Prasad; A. A. Tawfek; A. K. Mohanty

• Book ID: 104661710
• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 502 KB
• Volume: 10
• Category: Article
• ISSN: 0723-4864
• DOI: 10.1007/bf00202459

✦ Synopsis

Direct measurements of local heat flux and temperature from rotating cylinders have been carried out using Gardon type foil heat flux sensors and a power supply cum instrumentation slip ring set up. The local and average heat transfer results are presented covering a rotational Reynolds number range of 2 x 104 to 6.2 • 104 corresponding to the speeds varying from 400 to 1,400 rpm. A correlation has been derived for peripherally averaged values of Nusselt numbers: Nu, = 0.155 Re 0"661. The values of surface average Nusselt number for the cylinder under the present rotating conditions are found to be higher than for a stationary cylinder in crossflow and for a cylinder rotating about its own axis, in the range of present experiments.