矩形通道内脉动层流相位差实验研究  

Experimental Study on Phase Difference of Pulsating Laminar Flow in Rectangular Channel

作　　者：刘宇生[1,2] 高璞珍 谭思超 幸奠川 

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江哈尔滨150001 [2]环境保护部核与辐射安全中心,北京100082

出　　处：《原子能科学技术》2013年第4期564-569,共6页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(50806014);中央高校基本科研业务费专项资金资助项目(HEUCFZ1008);国家留学归国人员科研启动基金资助项目(2012-1707)

摘　　要：对流量脉动条件下矩形通道内的相位差进行了实验研究,通过建立的脉动层流相位差数学模型,对脉动周期、脉动振幅、通道结构尺寸和流体性质等因素进行了分析,并将实验数据与理论模型结果进行对比。结果表明:矩形通道内,脉动层流的流量变化滞后于压降变化,存在相位差,该相位差仅与脉动周期、流道结构尺寸和流体性质有关,与压降相对振幅无关。Phase difference between the velocity and pressure drop of pulsating laminar flow in rectangular channel was investigated experimentally. The influences of the flow fluctuation period, relative amplitude of pressure drop, fluid properties and aspect ratio of the flow cross-section in rectangular channel were analyzed by establishing mathemat- ical model. Experimental results were compared with the mathematical model results. The results show that the imposed flow pulsation causes phase difference between the velocity and pressure drop. The phase difference is only determined by structure of rectangular channel, fluctuation period and fluid properties, but irrelevant to relative amplitude of the fluctuation.

关 键 词：脉动流 相位差 矩形通道 

分 类 号：TL334[核科学技术—核技术及应用]