压力脉动对浮泥悬扬影响的实验研究  

Experimental Study on the Effect of Vertical Fluctuating Pressure on the Entrainment of Fluid Mud

作　　者：郭龙先[1] 喻国良[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《海岸工程》2012年第2期21-30,共10页Coastal Engineering

基　　金："十一五"规划:国家水体污染控制与治理科技重大专项--城市景观湖泊生态引水及优化调控技术及示范工程(2008ZX07106-2-1)

摘　　要：采用水槽实验和现场实测相结合的方法,在一个时均流速为零的无流水槽试验中采用振动发生器所产生脉动水流,探究不同的压力脉动对于底床泥沙悬扬的影响,分析水体的垂向浊度分布及相应的脉动水压力等,探明压力脉动对浮泥悬扬的重要性,为揭示风生波浪造成的压力脉动与浮泥悬扬间的固有响应关系奠定基础。By combining flume experiment with in-situ measurements and by means of using a vibrator to produce fluctuating flow in a no-flow flume experiment as well,the effects of different fluctuating hydro-pressures on entrainment of fluid mud were studied and the vertical turbidity distribution and the corresponding hydro-pressure were also analyzed.The importance of the fluctuating hydro-pressure to the entrainment of fluid mud was illustrated.All these have laid the foundation for revealing the inherent response of the fluid mud to the wave-induced fluctuating hydro-pressure.

关 键 词：浮泥 悬扬 脉动水流 泥沙浓度 脉动频率 

分 类 号：TV149[水利工程—水力学及河流动力学]