分层水环境周期性循环水流诱导形成内波的特性与类型  

Characteristics and Types of Internal Waves Induced by Circulated Flowin Stratified Water Environments

作　　者：杨娌 孙昕[1] 任广林[1] 陈笑涵[1] 史路肖 唐晓 YANG Li;SUN Xin;REN GuangLinl;CHEN Xiaohan;SHI Luxiao;TANG Xiao(School of Environmental and Municipal Engineering, Xi＇an University of Architecture and Technology;Xi＇an Jumping Water Environment Technology Co. Ltd.： Xi＇an 710055, China)

机构地区：[1]西安建筑科技大学环境与市政工程学院 [2]西安扬水源环境科技有限公司,陕西西安710055

出　　处：《水处理技术》2018年第5期103-107,共5页Technology of Water Treatment

基　　金：国家自然科学基金面上项目(51178379);陕西省科技统筹创新工程计划项目(2015KTCL-03-15);教育部高等学校博士点专项科研基金(20106120120012);人力资源和社会保障部留学人员科研择优资助项目(DB03153)

摘　　要：采用自行研制的间歇式机械混合中试装置和分层水库物理模型,在温度梯度为0.25℃/cm和0.37℃/cm条件下,进行了周期性循环水流诱导内波的中试研究。结果表明,喉管断面体积流量qV和电动机转速Nc之间的特性方程为qV=(61.32 m3/r)Nc;循环水流的扰动周期不变,诱导产生的内波周期基本也不发生变化,且平均内波周期和运行周期基本相同;在同一温度梯度下,内波波高随转速的增大呈现出先增大至极值再减小的趋势;波高随温度梯度增加而增大;从激发源角度上说,周期性循环水流诱导形成的内波是一种体积效应波。Systematic pilot experiments of internal waves induced by circulated flowwere performed under the temperature gradients of 0.25 ℃/cm and0.37 ℃/cm of the thermocline by use of self-designed intermittent mechanical mixing device in a stratified reservoir physical model. results showed that the characteristic equation between the volume flow（qV） checked by flow meter and motor rotate speed（Nc） was qV=（61.32 m^3/r） Nc.The period of circulated flow-induced internal waves changed with the disturbance period of circulated flow, and the average wave period was basically same with cycle flow period. Under condition of the same temperature gradient, the wave height of internal waves increased to the extreme value first and gradually reduced with the increase of motor speed. The amplitudes of internal waves increased with the temperature gradient. From the point of inducing source, the type of internal waves induced by circulated flow could be classified into a kind of volume-generated internal waves.

关 键 词：内波 间歇式机械混合 周期性循环水流 特征 

分 类 号：TU991.32[建筑科学—市政工程]