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Laminar Convection In Internal Flow
2021In Chap. 1, we have introduced the concept of convection through a phenomenological description by introducing h, the convection heat transfer coefficient. The heat transfer coefficient was introduced through the so-called “Newton’s law of cooling”. In many problems encountered in conduction heat transfer, we have made use of a suitable “h” value to ...
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1980
The dispersion of clusters of small spherical particles (20–400 m) suspended in a liquid has been studied by subjecting them to linear two-dimensional flow fields which include pure shear as one limit pure rotation as the other with simple shear as an intermediate case.
R. L. Powell, S. G. Mason
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The dispersion of clusters of small spherical particles (20–400 m) suspended in a liquid has been studied by subjecting them to linear two-dimensional flow fields which include pure shear as one limit pure rotation as the other with simple shear as an intermediate case.
R. L. Powell, S. G. Mason
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2017
Abstract In this chapter it is shown that solutions to the Navier-Stokes equations can be derived for steady, fully developed flow of a constant-viscosity Newtonian fluid through a cylindrical duct. Such a flow is known as a Poiseuille flow. For a pipe of circular cross section, the term Hagen-Poiseuille flow is used.
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Abstract In this chapter it is shown that solutions to the Navier-Stokes equations can be derived for steady, fully developed flow of a constant-viscosity Newtonian fluid through a cylindrical duct. Such a flow is known as a Poiseuille flow. For a pipe of circular cross section, the term Hagen-Poiseuille flow is used.
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Flow Laminarization and Acceleration by Suspended Particles
SIAM Journal on Applied Mathematics, 2015In [Comm. Appl. Math. Comput. Sci., 4 (2009), pp. 153-175], Barenblatt presents a model for partial laminarization and acceleration of shear flows by the presence of suspended particles of different sizes, and provides a formal asymptotic analysis of the resulting velocity equation. In the present paper we revisit the model.
BERTSCH, MICHIEL +2 more
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Secondary instability of laminar flows
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1981The kinematic wave theory, which was developed originally for non-dissipative wave systems, is modified for the analysis of a dissipative wave system in a slightly inhomogeneous medium. The modification is made for application to the problem of predicting the development of a high-frequency wavepacket in an unsteady laminar flow, which consists of a ...
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Spiral laminar flow in arteries?
The Lancet, 1991Spiral blood-flow patterns in infrainguinal blood-vessels were observed at angioscopy in 54 patients who underwent peripheral vascular reconstruction; the endoluminal surface had spiral folds in 51 of 75 arteries examined. Spiral flow patterns, congruous with inherent endoluminal anatomical features, might more accurately represent blood-flow in ...
Peter A Stonebridge, Colleen M. Brophy
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Journal of Applied Mechanics, 1954
Abstract The problem of the decay of a rotationally symmetric steady swirl superimposed on Poiseuille flow in a round pipe was investigated theoretically and experimentally. The object was to determine the degree to which the rate of decay of the swirl as predicted by a linearized theory agreed with measured rates of decay at flow ...
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Abstract The problem of the decay of a rotationally symmetric steady swirl superimposed on Poiseuille flow in a round pipe was investigated theoretically and experimentally. The object was to determine the degree to which the rate of decay of the swirl as predicted by a linearized theory agreed with measured rates of decay at flow ...
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Laminar flow in a channel with a step
Journal of Engineering Mathematics, 1972In this paper we investigated numerically the laminar flow of a homogeneous, viscous incompressible liquid, through a channel with a step. We used one numerical approach for small Reynolds numbers, and a different method for large numbers. Streamlines were calculated with high accuracy using a relatively small amount of computer time.
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Diffusion in laminar pipe flow
International Journal of Heat and Mass Transfer, 1977Abstract A combination of analytical reasoning and experimental observation is used to investigate the spreading of a solute that has been injected in fully-developed, laminar pipe flow. The results indicate that diffusion in laminar flow depends very much upon the magnitude of a dimensionless parameter, e, that is analogous to the reciprocal of the ...
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ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1969
AbstractSteady laminar flow in a curved pipe of circular cross section is investigated. It is assumed that the flow consists of a frictionless central core surrounded by a boundary layer. A formula for the friction factor of a curved pipe is derived, and the discharge coefficient for a 360‐deg elbow flowmeter is discussed.
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AbstractSteady laminar flow in a curved pipe of circular cross section is investigated. It is assumed that the flow consists of a frictionless central core surrounded by a boundary layer. A formula for the friction factor of a curved pipe is derived, and the discharge coefficient for a 360‐deg elbow flowmeter is discussed.
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