Status已發表Published
Fluctuation of the front propagation speed of developed gravity current
Ieong, K. K.1; Mok, K. M.1; Yeh, Harry2
2006
Conference NameConference on Global Chinese Scholars on Hydrodynamics
Source PublicationPROCEEDINGS OF THE CONFERENCE OF GLOBAL CHINESE SCHOLARS ON HYDRODYNAMICS
Conference DateJUL 11-14, 2006
Conference PlaceShanghai, PEOPLES R CHINA
PublisherSHANGHAI UNIV, 149 YANCHANG RD, SHANGHAI 200072, PEOPLES R CHINA
Abstract

Saline current with specific gravity of 1.003 intruding into a fresh water body of 45 cm deep was generated in a 9.0 m long, 65 cm wide and 60 cm deep tank with a partial-depth lock release scheme. The flow structures of the fully developed current and its front propagation speed at a distance 11.6 to 17.0 times of the partial lock depth were observed and measured, respectively with the laser-induced fluorescence (LIF) flow visualization technique. The results show that the velocity of the advancing front fluctuated as the current moved along. It was caused by the changing shape of the front as well as the three dimensional action of the cross-stream ambient fluid entrainment to the current front. These processes affected the position of the nose of the current hence its propagation speed. Meanwhile, it also complicated the mixing behavior of the gravity current.

Indexed BySCIE
Language英語English
WOS Research AreaMechanics
WOS SubjectMechanics
WOS IDWOS:000243316200057
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Affiliation1.Department of Civil and Environmental Engineering, University of Macau, Av. Padre Tomás Pereira S.J., Taipa, Macao, China
2.Department of Civil, Construction & Environmental Engineering, Oregon State University, 220 Owen Hall, Corvallis, OR 97331, USA
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Ieong, K. K.,Mok, K. M.,Yeh, Harry. Fluctuation of the front propagation speed of developed gravity current[C]:SHANGHAI UNIV, 149 YANCHANG RD, SHANGHAI 200072, PEOPLES R CHINA,2006.
APA Ieong, K. K.,Mok, K. M.,&Yeh, Harry.(2006).Fluctuation of the front propagation speed of developed gravity current.PROCEEDINGS OF THE CONFERENCE OF GLOBAL CHINESE SCHOLARS ON HYDRODYNAMICS.
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