Relationship between Hazen-William coefficient and Colebrook-White friction factor: Application in water network analysis. Niazkar M, Talebbeydokhti N & Afzali SH.Proceedings of the Royal Society A - Mathematical, Physical & Engineering Sciences 1937: p. Experiments with fluid friction in roughened pipes. Journal of Hydraulic Engineering 1998 124(9): p. Limitations and proper use of the Hazen-Williams equation. The limits of applicability of the Hazen-Williams formula. Industrial & Engineering Chemistry Research 2009 48: p. Efficient resolution of the Colebrook equation. Boston, USA: Butterworth-Heinemann 1998: p. In: Sanks RL, Tchobanoglous G, Bosserman BE, Jones GM, editors. We would like to acknowledge Magnus Holmgren for the open-source 'XSteam' Matlab tool of which these newly released Matlab tools extensively make use to get the water properties as a function of the water temperature (and pressure in some) and Didier Clamond for the open-source Matlab tool for his algorithm to calculate Darcy friction factor. The PhD title is "District heating in areas with low energy houses - Detailed analysis of district heating systems based on low temperature operation and use of renewable energy" which can be freely downloaded from the DTU Library (link) or from the ResearchGate portal (link). Susanne Balslev Nielsen at the Technical University of Denmark (DTU). This Matlab tool is a by-product from the PhD study about the 4th generation (4G) low-temperature district heating systems in supply to low-energy houses, carried out by Hakan İbrahim Tol, PhD under the supervision of Prof. The example script 'exampleRoughnessConverters.m' in this repository shows how to use the converter tools for a given input data.Īny contribution to this repository DrTol/pressure_loss_calculator-Matlab (via Pull Requests) in GitHub or comments/update requests via personal message are welcome so to improve the tool to ease the future projects in District Heating Systems and also in other Hydraulic Networks. The example Matlab script 'examplePressureLoss.m' in this repository shows how to use the calculator tool for a given input data.Īs supplementary to the pressure loss calculator, two other Matlab converter tools are given to obtain the Hazen-Williams roughness coefficient (C), (i) as one tool formulized as a function of the Darcy friction factor and (ii) the other tool allowing conversion from the relative pipe roughness (absolute roughness (eps)/pipe inner diameter). Besides, another feature is given to select among various algorithms to obtain the Darcy friction factor, either by solving directly the implicit 'Colebrook-White' equation or by making use of various explicit correlation approximations such as by 'Moody', 'Clamond', 'Swamee-Jain', 'Zigrang-Sylvester', and 'Haaland', considering their operational limitation ranges. This Matlab calculator tool provides the option of selecting either the 'Hazen-Williams' or the 'Darcy-Weisbach' formulation to calculate the friction pressure loss. We are happy to announce you that the Matlab pressure loss calculator (SI Units) is released recently as an open-source tool on GitHub portal, here its link:
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