Response of a Tropical Reservoir to Bubbler Destratification
Response of a Tropical Reservoir to Bubbler Destratification
复制标题
热带水库对鼓泡器去层化的响应
DOI：
10.1061/(asce)0733-9372(2006)132:7(736
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发表时间：
2006
影响因子：
2.2
通讯作者：
D. Luketina
中科院分区：
文献类型：
--
作者：
G. Sahoo;D. Luketina
本文建立了一个一维气泡-鼓泡器模型，研究了分层水库中鼓泡器运行引起的混合和溶解氧分布的变化。将该模型应用于新加坡的一个热带水库，上皮尔斯水库。对于这个热带水库，低风速，它被发现，鼓泡操作占主导地位的氧气转移到水库的水，而不是从所有其他来源，包括表面复氧的氧气转移。结果表明，在鼓泡器设计中，每个扩散器的风量、气泡半径和扩散器总数的选择是重要的准则。通过增加与机械效率（ηmech）低于鼓泡器的最佳ηmech相关的鼓泡器气流速率来获得水库中更高的溶解氧水平。确定一个适当的气流速度被证明是增加溶解氧水平和增加的运营成本之间的权衡，因为气流速度的增加。当...
A one-dimensional reservoir-bubbler model has been developed to examine the mixing and the change in dissolved oxygen pattern induced by bubbler operation in a stratified reservoir. The reservoir-bubbler model is applied to a tropical reservoir, the Upper Peirce Reservoir, Singapore. For this tropical reservoir with low wind speeds, it is found that bubbler operation dominates oxygen transfer into the reservoir water rather than oxygen transfer from all other sources, including surface reaeration. It is illustrated that selection of airflow rate per diffuser, air bubble radius, and total number of diffusers are important criteria in bubbler designs. Higher dissolved oxygen levels in reservoirs are obtained by increasing the bubbler airflow rate that is associated with lower mechanical efficiency ( ηmech ) than optimal ηmech of the bubbler. Determining an appropriate airflow rate is shown to be a tradeoff between increased dissolved oxygen levels and increased operating costs as airflow rate increases. Whe...