管道工程中流体速度对突扩部阻力损失影响的试验研究  

Test and Research on Influence of Fluid Velocity on Resistance Loss at Sudden Expansion in Pipeline Engineering

作　　者：张沛航 杨帆[1] 王钰涌 张馨以 Zhang Peihang;Yang Fan;Wang Yuyong

机构地区：[1]西北工业大学,710129

出　　处：《工程机械》2022年第6期27-31,I0018,共6页Construction Machinery and Equipment

摘　　要：由于工程管道截面设计加工的差异性,试验中发现流体速度对管道(圆管)突扩部阻力损失系数产生影响,导致管道突扩部阻力损失计算结果与实际测量值存在较大偏差,影响工程管道的使用效果。基于伯努利方程推导出计算精确度较高的算式,并通过试验修正圆管突扩部阻力损失,研究流体速度对管道突扩部阻力损失的影响:流体速度增大时损失变小。修正后的算式在工业管道设计、制造及液体输送工程中具有很好的应用价值。Due to the difference in the design and processing of the cross section of the engineering pipeline,it is found that the fluid velocity has an impact on the resistance loss coefficient at the sudden expansion of the pipeline(round pipe),resulting in a large deviation between the calculation results of the resistance loss at the sudden expansion of the pipeline and the actual measured values,which affects the service effect of the engineering pipeline.Based on the Bernoulli equation,a formula with high calculation accuracy is derived,the resistance loss at the sudden expansion of the round pipe is corrected through tests,and the influence of the fluid velocity on the resistance loss at the sudden expansion of the pipeline is studied,that is,when the fluid velocity increases the loss decreases.The revised formula has good application value in design and manufacture of industrial pipeline and liquid transportation engineering.

关 键 词：突扩部 管道制造 阻力损失 

分 类 号：G62[文化科学—教育学]