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

Ray-Yeng Yang, Hwung Hweng Hwung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
PublisherInternational Society of Offshore and Polar Engineers
Pages545-550
Number of pages6
ISBN (Print)9781880653708
Publication statusPublished - 2008 Jan 1
Event18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 - Vancouver, BC, Canada
Duration: 2008 Jul 62008 Jul 11

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
CountryCanada
CityVancouver, BC
Period08-07-0608-07-11

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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