A sixteen decimal places' accurate Darcy friction factor database using non-linear Colebrook's equation with a million nodes: A way forward to the soft computing techniques [PDF]
Data in Brief, 2019 The Colebrook's equation is considered as an empirical model to accurately compute the Darcy friction factor in pipes under fully-developed turbulent flow.
Muhammad Mujtaba Shaikh +2 more
doaj +2 more sources
Accurate and Efficient Explicit Approximations of the Colebrook Flow Friction Equation Based on the Wright ω-Function [PDF]
Mathematics, 2018 The Colebrook equation is a popular model for estimating friction loss coefficients in water and gas pipes. The model is implicit in the unknown flow friction factor, f.
Dejan Brkić, Pavel Praks
doaj +10 more sources
Turbulence Intensity Scaling: A Fugue
Fluids, 2019 We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions.
Nils T. Basse
doaj +3 more sources
Lubricants, 2023 During the operation of the guide rail pair, the accuracy of the guide rail pair is decreased by friction and wear, and the overall performance of the machine tool is directly affected. The influence of surface micro-features of the slider raceway on the
Mingxia Kang, Dezheng Hua, Xiaoqiang Guo
doaj +1 more source
Experimental study of flow friction behavior in coiled tubing
Energy Reports, 2022 Coiled tubing (CT) technology has been widely applied in well cleanouts, drilling plug, and shale oil and gas fracturing. Fluid flow in CT produce a more significant flow friction pressure loss because of the long length and small tubing diameter coiled ...
Shihui Sun +3 more
doaj +1 more source
Experimental study on the use of aluminum oxide and copper oxide nanoparticles to improve the thermal hydraulic performance of Peugeot 206 radiator [PDF]
مجله مدل سازی در مهندسی, 2022 In this work, Nusselt number and friction factor in the tube side of car radiator which is a type of fin and tube heat exchanger are experimentally determined.
hassan Hajabdollahi, vahid ghamari
doaj +1 more source
Energies, 2022 The performance of heat exchangers is severely limited by airside thermal resistance. The effect of redirection louvers (RLs) on the airside thermal performance of a compact flat-tube louvered fin heat exchanger was investigated.
Arslan Saleem, Man-Hoe Kim
doaj +1 more source
Friction factors for smooth pipe flow [PDF]
, 2004 Friction factor data from two recent pipe flow experiments are combined to provide a comprehensive picture of the friction factor variation for Reynolds numbers from 10 to 36,000 ...
Donnelly, R. J. +4 more
core +1 more source
Effect of V-cut on the performance of a longitudinal vortex generator using CFD [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2022 Computational analysis is conduct to investigate the comparative study between V-cut vortex generator and without Vcut vortex generator at different spacing lengths. Water is the working fluid, and the Reynolds number is varying in the range of 300 to 1,
Ishu Shukla +2 more
doaj +1 more source
A new friction factor relationship for fully developed pipe flow [PDF]
, 2005 The friction factor relationship for high-Reynolds-number fully developed turbulent pipe flow is investigated using two sets of data from the Princeton Superpipe in the range 31×10^3 ≤ ReD ≤ 35×10^6. The constants of Prandtl’s ‘universal’ friction factor
McKeon, B. J. +2 more
core +1 more source