摘要
针对简谐脉动层流条件下矩形通道内的阻力特性进行理论和实验研究。基于脉动条件下矩形通道内层流流动的数学模型,分析了脉动周期、脉动振幅等因素对摩阻常数的影响,并进行实验验证。结果表明:脉动层流摩阻常数与脉动周期、脉动振幅、通道高宽比和流体性质有关;层流摩阻常数理论值与实验值相吻合,脉动周期越小或相对振幅越大,层流摩阻常数的峰值越大、谷值越小,层流摩阻常数脉动的幅度越大。
Resistance characteristics of pulsating laminar flow in a rectangular channel were investigated analytically and experimentally. Mathematical model of laminar flow was established. The influences of the flow fluctuation period and relative amplitude on friction constant were analyzed. Analytical results were verified by experiment. The results show that friction constant in pulsating laminar flow is a function of pulsating
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第2期223-228,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)
核反应堆系统设计技术重点实验室基金资助项目(KZAKA1101)
关键词
脉动流
矩形通道
阻力特性
pulsating flow
rectangular channel
resistance characteristics
