Abstract
The key element in design of pipelines is the friction factor estimation. After the brief review of the experimental data and friction factor correlations for isothermal single phase flow, we have checked the validity of well-known correlations through statistical criteria. During this process it was statistically proved that some of the well-known and permanently cited friction factor equations can be improved. Moreover we have prepared, for practical engineering purposes, equations that cover the entire range of laminar, critical and turbulent pipe flow.
Highlights
Transportation of various fluids absorbs a huge amount of energy in any project concerning chemical engineering and energy production and distribution plants
After the brief review of the experimental data and friction factor correlations for isothermal single phase flow, we have checked the validity of well-known correlations through statistical criteria
Afterwards we reviewed some of the correlations listed above and the results are shown in Tables 2, 3 and 4
Summary
Transportation of various fluids absorbs a huge amount of energy in any project concerning chemical engineering and energy production and distribution plants. The best known handbooks in chemical, thermal and hydraulic engineering, like [1,2,3,4,5,6], cite “classical work” in the field of fluid mechanics, numerous continuously published papers about the fluid flow through the circular pipes indicate that this is still a very interesting topic. Up to the middle of 20th century Prandtl, von Karman, Nikuradse, Colebrook and others set the equations that are still in use by virtue of their comprehensiveness and compliance with numerous experimental data. Since that time experimental and theoretical studies on liquid and gas flow in pipeline was carried out in order to:. X extend the friction factor equation in order to cover high Reynolds number flow (of relevance especially for natural gas pipelines);. At the very end we made original equations that cover complete range of laminar, critical and turbulent flow in pipes in a form that is very practical for design purposes
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