Marginal stability analysis on salt fingers convection with parabolic temperature and salinity profiles

Ray Yeng Yang, Hwung Hweng Hwung

研究成果: Conference contribution

摘要

This paper explores the influence of parabolic profiles of temperature and salinity, as might arise due to local evaporation or warming disturbance, on the marginal stability problem in a salt-fingering regime. From the results of this article, the governing equations obtained for stationary onset of salt-fingers convection of a gravity gradient due to local disturbance in parabolic temperature and salinity profiles are similar to those obtained by the small-gap Taylor-Couette problem. Detailed relationships between the effective Rayleigh number (R̃c), the critical wave number (ac) and the couple disturbed local depth under the stationary stability analysis are also shown in this work. From the result of overstability analysis, it shows that oscillatory motion of salt-fingers convection will be triggered under a certain definite characteristic frequency. In overstability, it provoke restoring forces so strong as to overshoot the corresponding position on the other side of equilibrium for case of coupled disturbance in the upper layer of ocean.

原文English
主出版物標題Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
發行者International Society of Offshore and Polar Engineers
頁面545-550
頁數6
ISBN(列印)9781880653708
出版狀態Published - 2008
事件18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 - Vancouver, BC, Canada
持續時間: 2008 七月 62008 七月 11

出版系列

名字Proceedings of the International Offshore and Polar Engineering Conference
ISSN(列印)1098-6189
ISSN(電子)1555-1792

Other

Other18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
國家/地區Canada
城市Vancouver, BC
期間08-07-0608-07-11

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 海洋工程
  • 機械工業

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