书目名称 | Environmental Stratified Flows | 编辑 | Vincenzo Armenio,Sutanu Sarkar | 视频video | | 丛书名称 | CISM International Centre for Mechanical Sciences | 图书封面 |  | 描述 | Stratified flows, common in environmental and geophysical applications, are char acterized by the variation of fluid density in the vertical direction that can result in qualitative and quantitative modifications of the flow patterns by buoyancy . Unstable stratification (dense water/air above light water/air) increases the ver tical mixing by generation of convective cells while stable stratification generally suppresses vertical mixing of mass and momentum. Even so, a stably stratified fluid can support internal waves, instabilities and turbulence that play a critical role in transport and mixing. The ocean is predominantly subject to stable stratification which, under exter nal excitation, supports an environment of internal waves which may then break and generate turbulence. Wind forcing, currents and convective plumes are other sources of turbulence in the ocean. In the ocean, stratified turbulence mediates the upward transport of bottom water, nutrients, chemical and biological species, and pollutants. In the atmosphere, stratification affects the transport of pollutants released at ground level, a critical problem being the thermal inversion in urban areas that causes the | 出版日期 | Book 2005 | 关键词 | Layer; fluid mechanics; geophysical fluid dynamic; mathematical modeling; mechanics; mixing; modeling; turb | 版次 | 1 | doi | https://doi.org/10.1007/3-211-38078-7 | isbn_softcover | 978-3-211-28408-7 | isbn_ebook | 978-3-211-38078-9Series ISSN 0254-1971 Series E-ISSN 2309-3706 | issn_series | 0254-1971 | copyright | CISM Udine 2005 |
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