Coupled Bubble-plume/reservoir Model for Hypolimnetic Oxygenation:Full-scale Evaluation
作者单位：Department of Civil & Environmental Engineering Virginia TechBlacksburgVA24061-0246 USA. Surface Waters-Research and Management Federal Institute for Environmental Science and Technology(Eawag)KastanienbaumCH-6047Switzerland. Department of Crvil & Environmental Engineering Virginia TechBlacksburgVA24061-0246 USA.
会议名称：《2007中国科协年会》
会议日期：2007年
学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程]
摘 要：Bubble-plume diffusers are increasingly used to replenish hypolimnetic dissolved oxygen while preserving *** bubble plumes are successful at adding oxygen,the added energy may induce large-scole hypolimnetic ***-induced mixing changes the thermal structure of the reservoir;while plume performance depends strongly on the ambient density gradient Here we account for this complex plume-reservoir interactiom by coupling a bubble-plume model with an existing two-dimensional hydrodynamic and water quality reservoir model,CE-QUAL-W2(W2).To evaluata the coupled models,data were nsed from field-scale testing conducted in 1998 with a linear bubble-plums diffuser in Spring Hollow Reseroir,Virginta,*** coupled model slightly under-predicted the extent of hypolimnetic *** sediment oxygen demand was estimatad as a zero-order process in the reservoir model,the coupled model simulations agreed very closely with the observed increase of dissolved oxygen in the hypolimnion.