Generation, Transport and Fate of Surfzone Bubbles

Download or read book Generation, Transport and Fate of Surfzone Bubbles written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to make optically-based observations in nearshore waters is strongly influenced by the presence of suspended sediment particles and of bubbles, both of which are present due to the action of breaking waves. Wave breaking is instrumental in injecting large volumes of air into the water column. This air volume subsequently evolves into a distribution of bubble sizes which interact with the fluid turbulence and are advected by the organized flow. Our initial objective is to specify a general framework for bubble dynamics in a sediment laden environment, and to implement this formulation in a wave-resolving model of surfzone processes. Specific objectives in support of this effort include: 1) Develop a multiphase model for the evolution and transport of a bubble size distribution in a turbulent, sediment-laden flow. 2) Utilize a RANS-VOF model to provide information about the spatial and temporal distribution of bubble sources related to breaking wave events.