Dual steady solutions in natural convection between horizontal concentric cylinders

✍ Scribed by Joo-Sik Yoo

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 627 KB
• Volume: 17
• Category: Article
• ISSN: 0142-727X
• DOI: 10.1016/s0142-727x(96)00064-1

✦ Synopsis

Dual steady solutions in natural convection in an annulus between two horizontal concentric cylinders are numerically investigated for a fluid of Prandtl number 0.7. It is found that, when the Rayleigh number based on the gap width exceeds a certain critical value, dual steady two-dimensional (2-D) flows can be realized: one being the crescent-shaped eddy flow commonly observed and the other the flow consisting of two counter-rotating eddies and their mirror images. The critical Rayleigh number decreases as the inverse relative gap width increases.