Numerical and experimental study of transient turbulent natural convection in a horizontal cylindrical container

✍ Scribed by J.L. Xiaa; B.L. Smith; G. Yadigaroglu; U. Gantner; B. Sigg

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 976 KB
• Volume: 41
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(97)00297-4

✦ Synopsis

Transient\ turbulent\ natural convection in a horizontal cylindrical container is numerically and experimentally investigated[ The container is of aluminium\ _lled with water\and a piece!wise constant heat ~ux is imposed on the outside wall[ Numerical results show that there exist conduction!controlled\ developing and quasi!steady!state periods during the transient and that the existence of the wall has some in~uence on the ~ow and heat transfer[ The ~ow undergoes two!vortex\ four!vortex and then again two!vortex con_guration changes during the transient[ The four! vortex ~ow pattern appears to be relatively unstable\ and is accompanied by asymmetric ~ow in the bottom region of the container[ Both numerical predictions and experiments reveal a well!strati_ed thermal _eld and numerical results are validated against experimental data[ Þ 0887 Elsevier Science Ltd[ All rights reserved