TURBULENT FLOW AND TRANSPORT IN OPEN CHANNELS WITH NATURAL ROUGHNESSES: EXPERIMENTS AND NUMERICAL SIMULATIONS

自然粗糙度明渠中的湍流和传输：实验和数值模拟

• 批准号: 183977-2013
• 负责人: Balachandar, Ramaswami
• 金额: $ 1.89万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=593644
• 关键词: TURBULENT; FLOW; TRANSPORT; OPEN; CHANNELS

The presence of submerged vegetation in conveyance channels leads to an increase in flow resistance and reduction of channel flow capacity. For this reason, vegetation has often been removed from channel beds. Biologists and ecologists have recognized that submerged vegetation can provide a wide range of important ecosystem services. Aquatic vegetation helps reduce turbidity, remove nutrients, produce oxygen and alter sediment transport. Studying the interaction of turbulence with aquatic vegetation and its role in cycling nutrients, controlling erosion, and protecting riverbanks can have enormous ecologic and economic benefits.

输送渠道中水下植被的存在导致水流阻力增加和渠道流通能力降低。因此，河床上的植被经常被清除。生物学家和生态学家已经认识到水下植被可以提供广泛的重要生态系统服务。水生植被有助于降低浊度、去除营养物质、产生氧气并改变沉积物运输。研究湍流与水生植被的相互作用及其在养分循环、控制侵蚀和保护河岸方面的作用可以产生巨大的生态和经济效益。