Results 201 to 210 of about 74,293 (256)
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1998
The behaviour of unsteady liquid jets in a gas atmosphere is mainly governed by the conservation of momentum and the interaction with the environment. In this article it will be shown that many of the particular effects in the propagation and desintegration of unsteady jets are simply explained by the conservation of initial momentum.
Meier, G. E. A., Loose, S., Stasicki, B.
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The behaviour of unsteady liquid jets in a gas atmosphere is mainly governed by the conservation of momentum and the interaction with the environment. In this article it will be shown that many of the particular effects in the propagation and desintegration of unsteady jets are simply explained by the conservation of initial momentum.
Meier, G. E. A., Loose, S., Stasicki, B.
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Hydromagnetic unsteady flow due to an unsteady plate
Astrophysics and Space Science, 1978The unsteady flow near an infinite flat plate, which is oscillating harmonically in its own plane, is studied in the presence of a magnetic field subjected to suction or injection. The magnetic field is perpendicular to the plate and the flow of viscous incompressible and electrically conducting fluid is regarded as being initially at rest.
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IMA Journal of Applied Mathematics, 1984
Based mainly upon results obtained at the Queen Mary College in London a brief outline of the characteristics of unsteady laminar and turbulent boundary layers is presented. Superimposed on a steady mean motion are oscillatory standing or traveling waves. \textit{M. J.
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Based mainly upon results obtained at the Queen Mary College in London a brief outline of the characteristics of unsteady laminar and turbulent boundary layers is presented. Superimposed on a steady mean motion are oscillatory standing or traveling waves. \textit{M. J.
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Unsteady processes in machines
Chaos: An Interdisciplinary Journal of Nonlinear Science, 1994Couplings in machines and mechanisms always have play and friction. While under loading, stick–slip phenomena and impact events can take place. Such processes are modeled as multibody systems whose structure is time variant or unsteady. The time-variant number of degrees of freedom is due to stick–slip contacts.
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The Unsteady Lift on Bluff Cylindrical Bodies in Unsteady Flow
Aeronautical Quarterly, 1982SummaryThe unsteady lift generated on a NACA 0015 aerofoil, a D cylinder (with the flat face down-stream) and an elliptic cylinder was measured when these bodies were exposed to a flow with a two-dimensional sinusoidal upwash at reduced frequencies 0.05 to 0.8. The mean flow Reynolds numbers were in the range 1.2 × 105 to 3 × 105.
H. Stapountzis, J.M.R. Graham
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1958
Publisher Summary The unsteady airfoil theory refers to the part of aerodynamics that considers the calculation of the pressure distribution over an airfoil moving with constant speed while performing an unsteady motion in the direction perpendicular to its plane.
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Publisher Summary The unsteady airfoil theory refers to the part of aerodynamics that considers the calculation of the pressure distribution over an airfoil moving with constant speed while performing an unsteady motion in the direction perpendicular to its plane.
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Model of a Wind Turbine with Unsteady Circulation or Unsteady Inflow
2017An unsteady model of a rotor is devised in this chapter. The analytical model can be used to investigate dynamic inflows and the unsteady evolution of the velocity field in the domain. It is based on the superposition of cylindrical vortex wake models under finite tip-speed ratios presented in Chap. 18.
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