Results 311 to 320 of about 3,130,306 (355)

Secondary flow in annular cascades

International Journal of Heat and Fluid Flow, 1980
Abstract It is shown that in an annular cascade, secondary flow occurs not only as the result of turning a shear flow, but also from the departure of the exit flow from a free-vortex condition. A method is developed for calculating the secondary flow in an annular cascade and this is applied to a set of inlet guide vanes.
D.R. Glynn, H. Marsh
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Nanofluids suppress secondary flow in laminar pipe flow [PDF]

, 2015
For the first time it is experimentally shown that free convection in laminar pipe flow with constant heat flux is significantly suppressed by nanoparticles. Moreover, for nanofluid flow with high heating power, an increase above the analytical solution for pure forced convection is lowered by increasing inlet temperature.
Colla L, Fedele F, Buschmann M H
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Secondary Flows and Losses in Axial Flow Turbines

Journal of Engineering for Power, 1982
A simple approach to the estimation of angle variation and losses produced by the secondary flows near the hub and casing of a turbine is presented. The angle variation is predicted by ‘classical’ secondary flow theory, and the loss by estimating three components of the loss and adding them together.
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Secondary Flows in Pipes

1966
In Lecture 10 we have seen that steady rectilinear flow down a straight pipe is possible for a general incompressible fluid only for certain exceptional cross-sections, and for all cross-sections only for certain exceptional fluids. Both the Navier-Stokes fluid and the fluid of second grade are exceptional in this sense, since their viscometric ...
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Secondary Flow in Rotating Bends

Journal of Engineering for Power, 1978
An equation describing the development of streamwise vorticity is derived. The fluid is assumed inviscid and incompressible and to have a gradient of rotating total pressure across the streamtube. The equation is used to calculate, by finite difference techniques, the streamwise vorticity development for bends, rotating straight pipes, rotating axial ...
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Secondary Flow in Noncircular Conduits

Journal of the Hydraulics Division, 1978
A requirement for calculating an accurate velocity distribution in noncircular conduits is a knowledge of the secondary flow distribution in these conduits. The cause of these secondary flows is considered in this paper and a simple momentum transfer model for Reynolds stresses is used to effect a solution for the secondary flow in a square duct.
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Secondary stresses in viscoelastic flow

Journal of Colloid Science, 1951
Abstract Theoretical equations are developed for secondary stresses in a shearing viscoelastic fluid. The theory assumes that the elastic stresses developed by the continuous shear also relax continuously in accordance with Maxwell's relaxation theory of viscosity. The steady-state strains are analyzed by the theory of superelasticity.
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Secondary instability of laminar flows

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1981
The 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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Secondary circulation in fluid flow

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1951
Secondary circulation appears after fluid with a non-uniform velocity distribution passes round a bend. It alters the character of the flow and is a source of loss. A general expression is developed for its change along a streamline in a perfect, incompressible fluid.
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Secondary regimes in couette flow

Fluid Dynamics, 1971
We consider the asymptotic solutions of secondary steady flows in a fluid contained between cylinders rotating in the same direction for large Reynolds numbers. The existence of secondary axisymmetric steady flows in a fluid contained between cylinders rotating in the same direction was shown in [1, 2].
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