Vortex theory


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1.(Chem. & Physics) The theory, advanced by Thomson (Lord Kelvin) on the basis of investigation by Helmholtz, that the atoms are vortically moving ring-shaped masses (or masses of other forms having a similar internal motion) of a homogeneous, incompressible, frictionless fluid. Various properties of such atoms (vortex atoms) can be mathematically deduced. This theory is now (1998) obsolete, and has been superseded by quantum mechanics, which provides more accurate and detailed explanations of atomic behavior.
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Descartes, for instance, had spun from thin air his famous vortex theory, which held that celestial bodies move in a massive network of whirling fluid.
implementation of research on the topic: development of a linear blade vortex theory of the x-shaped tail rotor on axial and oblique flow
The predicted sectional thrust distribution along the rotor in Figure 5 is also compared with the momentum source theory and the vortex theory [27], which shows a good agreement.
In Figures 6 and 7, spanwise distribution of the induced downwash and the circumferential induced velocity are compared with the experiment and the results obtained by vortex theory [27].
He covers the essence of fluid mechanics, conformational transformation, the transformation of a flow pattern, vortex theory, thin aerofoil theory, the panel method, finite aerofoil theory, compressible flows, and sample flights.
Chapter four discusses the circulatory or vortex theory, as first propounded by Lanchester, and describes the hostility he generated among other British experts.
Locke endorsed Newton's demolition of Descartes's vortex theory of planetary motion, grappled with competing theories on the biblical Deluge, and criticized Bernoulli's theory of cohesion.
Their topics include transport phenomena due to structural inhomogeneity in superconducting cuprates doped with cations, coherent oscillations in superconducting cold fermionic atoms and their applications, and the vortex theory of inhomogeneous superconductors.
In the nineteenth century, a conjecture called the vortex theory of the atom became extremely popular in England and America.
In the United States, Albert Michelson considered vortex theory so "grand" that "it ought to be true even if it is not." Hundreds of papers elaborated the theory.
In 1858 Helmholtz published an article "Uber Wirbelbewegungen" ["On Vortex Motion"] (3-37), "that epoch-making paper on Vortex theory, which may be said to have initiated modern hydrodynamics," as one excited reader, British physicist Oliver Lodge, wrote in 1925 (Bell 161).
The induced velocity of a spatial point below the rotor disc plane can be calculated by the sum of the induced velocities excited by center line vortex, rotor disk vortex, and skew cylinder vortex based on the generalized vortex theory. In order to minimize the systematic biases, the bias-calibration scheme adopts a multiple linear regression to achieve a systematically consistent result with the tethered balloon profiles.