Effects of kinetic sorptive exchange on solute transport in open-channel flow

A theory is presented for the transport in open-channel flow of a chemical species under the influence of kinetic sorptive exchange between phases that are dissolved in water and sorbed onto suspended sediments. The asymptotic method of homogenization is followed to deduce effective transport equations for both phases. The transport coefficients for the solute are shown to be functions of the local sediment concentration and therefore vary with space and time. The three important controlling parameters are the suspension number, the bulk solid-water distribution ratio and the sorption kinetics parameter. It is illustrated with a numerical example that when values of these parameters are sufficiently high, the advection and dispersion of the solute cloud can be dominated by the sorption effects. The concentration distribution can exhibit an appreciable deviation from Gaussianity soon after discharge, which develops into a long tailing as the solute cloud gradually moves ahead of the sediment cloud.published_or_final_versio

Scattering of surface waves by a semi-infinite floating elastic plate

A new inner product is developed based on the Fourier analysis to study the scattering of surface waves by a floating semi-infinite elastic plate in a two-dimensional water domain of finite depth. The eigenfunctions for the plate-covered region are orthogonal with respect to this new inner product. The problem is studied for various wave and geometrical conditions. Especially, the influence of different edge conditions on the hydrodynamic behavior is investigated and compared. The edge conditions considered in the present study involve (i) a free edge, (ii) a simply supported edge, and (iii) a built-in edge. The hydrodynamic performance of an elastic plate is characterized for various conditions in terms of wave reflection and transmission, plate deflection, and surface strain. It is observed that the hydrodynamic behavior depends on the wave conditions, the geometrical settings, and the edge conditions. The built-in edge condition induces the maximum wave reflection and the minimum wave transmission. The free edge condition leads to the maximum plate deflection. © 2001 American Institute of Physics.published_or_final_versio

Port spatial development and theory of constraints

Author name used in this publication: Tsz Leung YipRefereed conference paper2010-2011 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Maritime education in a transdisciplinary world : the case of Hong Kong

Author name used in this publication: Jim Mi NgAuthor name used in this publication: Tsz Leung Yip2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Port city factors and port production : analysis of Chinese ports

Author name used in this publication: Tsz Leung Yip2010-2011 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Paradigm shifts in shipping registry policy led to revitalization - Hong Kong case

Author name used in this publication: Jim Mi Jimmy NgAuthor name used in this publication: Tsz Leung Yip2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Implicit Mann approximation with perturbations for nonexpansive semigroups in CAT(0) spaces

Author name used in this publication: Tsz-leung Yip2012-2013 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Culture effects on vessel detention

Author name used in this publication: Tsz Leung YipRefereed conference paper2010-2011 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Ship investment at a standstill? An analysis of shipbuilding activities and policies

Author name used in this manuscript: Tsz Leung Yip2011-2012 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

The dynamics between freight volatility and fleet size growth in dry bulk shipping markets

Author name used in this manuscript: Tsz Leung Yip2011-2012 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe