In this paper, a novel explicit equation is presented for the friction factor prediction in the annular flow with drag reducing polymer (DRP). By using dimensional analyses and curve fitting on the published experimental data, the suggested equation is derived based on the logarithmic velocity ...
The implicit Colebrook equation has been the standard for estimating pipe friction factor in a fully developed turbulent regime. Several alternative explic... VEMG Diniz,PA Souza 被引量: 0发表: 2017年 Using Maximum Entropy to Develop Explicit Formulae for Friction Factor Calculation in Pipe Flow...
To verify the determined equation, a new set of experiments were carried out for specimens made of AL7075-O. The prediction of the shear friction factor at the punch interface was also achieved by simply dividing the dimensionless equation by the x ratio defined by x = m(fd)/m(fp), ...
explicit equation 显式方程；显函数方程式 例句 1.A New Explicit Equation for Calculating the Friction Factor for the Turbulent Flow in Pipes 计算管内湍动流体摩擦因数的显式新方程 2.Explicit exact solutions to KdV equation KdV方程的精确解析解 3.Explicit and exact solutions to the combine...
3) friction coefficient 摩擦因数 1. Prediction model for friction coefficient of resin-based friction materials based on neural network; 基于神经网络的树脂基摩擦材料摩擦因数的预测模型 2. Discussion of influence factors on viscose/pupa protein filament′s friction coefficient; 蛹蛋白粘胶长丝摩擦...
The intelligent fitting method for binary nonlinear polynomials was presented in order to obtain a high precise and simple form explicit equation for calculating the friction factor. 为了得到形式简单、精度高的计算摩擦因数的显式方程,提出了二元非线性多项式智能拟合法。6...
The friction factor is an important dimensionless parameter for fluid flow through rock fractures that relates pressure head loss to average flow velocity; it can be affected by both fracture geometry and flow regime. In this study, a theoretical formula form of the friction factor containing both...
aCalculation of friction factor is very important in determining the foam flow parameters. However, up to now have not found a reliable method to determine the friction coefficient, recommended here in two ways: Theory and experience. 摩擦因子的演算是非常重要在确定泡沫流程参量。 然而,到现在未发现...
Friction Factor,f Pipe Roughness,k Pipe Diameter,D Reynolds Number,Re How to Solve a Colebrook Equation in Excel: 3 Simple Ways Let’s consider the dataset shown in theB4:D12cells. We have the distribution of thePipe Roughnessand theReynolds Numberfor a fixedPipe Diameter. ...