摘要
针对我国给水铸铁管水头损失计算中习惯采用舍维列夫公式计算繁琐的问题,文中给出了采用最小二乘法曲线拟合推导出的水头损失计算简化式,即 I=1.698×10^(-3)/D^(4.926)q^(1.813)或 I=1.096×10^(-3)/D^(1.3)v^(1.813)。应用该式计算简便,在给水管常见流速范围内,精度满足工程要求。
In our design practice the head loss of cast-iron pipeline of water supply distribution networks was calculated by the Sheveliev formula.Agaist the complexity of the formula,a simplified formula for hydraulic calculation via curve fitting by least square method in the form as i=0.001698q^(1.813)/D^(4.926)or i=0.001096v^(1.813)/D^(1.3)was developed.The accuracy of the simplified formula will be acceptable for engineering practice.
出处
《给水排水》
CSCD
1993年第6期9-13,共5页
Water & Wastewater Engineering
