摘要
提出了一个简单适用的显式方程,可用于流体处在直圆形湍流光滑管区时的摩擦因数的计算。在3000≤Re≤108时,该方程的计算结果与卡门-普朗特方程的平均偏差为0.503%,最大偏差不超过0.87%,其计算精度高于其他现有的经验公式。
A new simple and explicit equation is proposed for calculating the friction factor for turbulent flow in straight and circular pipes. The results of this new equation can give the average deviation( APOD)of 0.503% and the maximum deviation of 0.87% as against that of the Karman-Prandtl equation, in the range of Reynolds number being 3 000≤ Re ≤ 108. The calculating accuracy of the new equation is higher than others'.
出处
《管道技术与设备》
CAS
2005年第3期32-33,共2页
Pipeline Technique and Equipment
关键词
摩擦因数
光滑管
湍动流体
计算方法
friction factor
smooth pipe
turbulent flow
calculating method
