In this paper we develop from first principles a unique law pertaining to the flow of fluids through closed conduits. This law, which we call “Quinn’s Law”, may be described as follows: When fluids are forced to flow through closed conduits under the driving force of a pressure gradient, there is a linear relationship between the fluid-drag normalized dimensionless pressure gradient, PQ, and the normalized dimensionless fluid current, CQ. The relationship is expressed mathematically as: PQ=k1 +k2CQ. This linear relationship remains the same whether the conduit is filled with or devoid of solid obstacles. The law differentiates, however, between a packed and an empty conduit by virtue of the tortuosity of the fluid path, which is seamlessly accommodated within the normalization framework of the law itself. When movement of the fluid is very close to being at rest, i.e., very slow, this relationship has the unique minimum constant value of k1, and as the fluid acceleration increases, it varies with a slope of k2 as a function of normalized fluid current. Quinn’s Law is validated herein by applying it to the data from published classical studies of measured permeability in both packed and empty conduits, as well as to the data generated by home grown experiments performed in the author’s own laboratory.
Published in | Fluid Mechanics (Volume 5, Issue 2) |
DOI | 10.11648/j.fm.20190502.12 |
Page(s) | 39-71 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2020. Published by Science Publishing Group |
Closed Conduits, Conduit Permeability, Friction Factor, Wall Effect, Boundary Layer, Turbulent, Flow Profile, Chaos
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APA Style
Hubert Michael Quinn. (2020). Quinn’s Law of Fluid Dynamics Pressure-driven Fluid Flow Through Closed Conduits. Fluid Mechanics, 5(2), 39-71. https://doi.org/10.11648/j.fm.20190502.12
ACS Style
Hubert Michael Quinn. Quinn’s Law of Fluid Dynamics Pressure-driven Fluid Flow Through Closed Conduits. Fluid Mech. 2020, 5(2), 39-71. doi: 10.11648/j.fm.20190502.12
AMA Style
Hubert Michael Quinn. Quinn’s Law of Fluid Dynamics Pressure-driven Fluid Flow Through Closed Conduits. Fluid Mech. 2020;5(2):39-71. doi: 10.11648/j.fm.20190502.12
@article{10.11648/j.fm.20190502.12, author = {Hubert Michael Quinn}, title = {Quinn’s Law of Fluid Dynamics Pressure-driven Fluid Flow Through Closed Conduits}, journal = {Fluid Mechanics}, volume = {5}, number = {2}, pages = {39-71}, doi = {10.11648/j.fm.20190502.12}, url = {https://doi.org/10.11648/j.fm.20190502.12}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.fm.20190502.12}, abstract = {In this paper we develop from first principles a unique law pertaining to the flow of fluids through closed conduits. This law, which we call “Quinn’s Law”, may be described as follows: When fluids are forced to flow through closed conduits under the driving force of a pressure gradient, there is a linear relationship between the fluid-drag normalized dimensionless pressure gradient, PQ, and the normalized dimensionless fluid current, CQ. The relationship is expressed mathematically as: PQ=k1 +k2CQ. This linear relationship remains the same whether the conduit is filled with or devoid of solid obstacles. The law differentiates, however, between a packed and an empty conduit by virtue of the tortuosity of the fluid path, which is seamlessly accommodated within the normalization framework of the law itself. When movement of the fluid is very close to being at rest, i.e., very slow, this relationship has the unique minimum constant value of k1, and as the fluid acceleration increases, it varies with a slope of k2 as a function of normalized fluid current. Quinn’s Law is validated herein by applying it to the data from published classical studies of measured permeability in both packed and empty conduits, as well as to the data generated by home grown experiments performed in the author’s own laboratory.}, year = {2020} }
TY - JOUR T1 - Quinn’s Law of Fluid Dynamics Pressure-driven Fluid Flow Through Closed Conduits AU - Hubert Michael Quinn Y1 - 2020/01/06 PY - 2020 N1 - https://doi.org/10.11648/j.fm.20190502.12 DO - 10.11648/j.fm.20190502.12 T2 - Fluid Mechanics JF - Fluid Mechanics JO - Fluid Mechanics SP - 39 EP - 71 PB - Science Publishing Group SN - 2575-1816 UR - https://doi.org/10.11648/j.fm.20190502.12 AB - In this paper we develop from first principles a unique law pertaining to the flow of fluids through closed conduits. This law, which we call “Quinn’s Law”, may be described as follows: When fluids are forced to flow through closed conduits under the driving force of a pressure gradient, there is a linear relationship between the fluid-drag normalized dimensionless pressure gradient, PQ, and the normalized dimensionless fluid current, CQ. The relationship is expressed mathematically as: PQ=k1 +k2CQ. This linear relationship remains the same whether the conduit is filled with or devoid of solid obstacles. The law differentiates, however, between a packed and an empty conduit by virtue of the tortuosity of the fluid path, which is seamlessly accommodated within the normalization framework of the law itself. When movement of the fluid is very close to being at rest, i.e., very slow, this relationship has the unique minimum constant value of k1, and as the fluid acceleration increases, it varies with a slope of k2 as a function of normalized fluid current. Quinn’s Law is validated herein by applying it to the data from published classical studies of measured permeability in both packed and empty conduits, as well as to the data generated by home grown experiments performed in the author’s own laboratory. VL - 5 IS - 2 ER -