Results 91 to 100 of about 1,997,150 (223)
Rebounce and Black hole formation in a Gravitational Collapse Model with Vanishing Radial Pressure
, 2007 We examine spherical gravitational collapse of a matter model with vanishing radial pressure and non-zero tangential pressure. It is seen analytically that the collapsing cloud either forms a black hole or disperses depending on values of the initial ...
A. Einstein +19 more
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Velocity Dispersion of the Open Cluster NGC 2571 by Radial Velocities and Proper Motions
The Astronomical JournalWe use a kernel density estimator method to evaluate the stellar velocity dispersion in the open cluster NGC 2571. We derive the 3D velocity dispersion using both proper motions as extracted from Gaia Data Release 3 and single-epoch radial velocities as ...
Maxim V. Kulesh +5 more
doaj +1 more source
Galactic Rotation Curve and Spiral Density Wave Parameters from 73 Masers
, 2013 Based on kinematic data on masers with known trigonometric parallaxes and measurements of the velocities of HI clouds at tangential points in the inner Galaxy, we have refined the parameters of the Allen-Santillan model Galactic potential and constructed
Bajkova, Anisa, Bobylev, Vadim
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Tangential velocity and water vortex structure behaviour based on cylindrical-shaped basin’s design parameters for gravitational vortex power plants [PDF]
E3S Web of ConferencesThe gravitational water vortex power plants (GWVPPs) have established in hydropower systems as a capable approach, generating micro-scale environment friendly electricity.
Teber Ahmet
doaj +1 more source
THE DISTRIBUTION OF THE TANGENTIAL VELOCITIES WITH P II STARS
Communications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 1963 In this paper for P II stars the distribution of the velocities Vg perpendicular to the radius vector from the galactic çenter to the sun is studied. The distribution curves Vg were derived from the space velocity vectors of the stars, as far as these space velo- city vectors are known.
openaire +2 more sources
Advances in Mechanical Engineering, 2019 This investigation is concerned with the study of thin film flow of a generalized Maxwell fluid along with slip conditions, confronting withdrawal and drainage on non-isothermal cylindrical surfaces.
Saif Ullah +3 more
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Numerical Study on a Novel Type of High Gravity Rotary Gas-Liquid Separator
Journal of Applied Fluid Mechanics, 2020 In textile printing and dyeing industry, a novel type of separator called high gravity rotary gas-liquid separator (HGRGS) is designed, which includes a rotary drum with multi-layer fins and an impeller.
Z. Zhang, H. Wang, J. Ma, X. Ling
doaj
Characteristics of lightly loaded fan rotor blade wakes [PDF]
Low subsonic and incompressible wake flow downstream of lightly loaded rotor was studied. Measurements of mean velocity, turbulence intensity, Reynolds stress, and static variations across the rotor wake at various axial and radial locations were ...
Lakshminarayana, B., Reynolds, B.
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Journal of Mathematical Analysis and Applications, 1997 The author performs a nonlinear stability analysis using a multi-scales perturbation procedure for the instability of two layers of immiscible, inviscid, arbitrarily compressible fluids in relative motion. For modes of all wavenumbers on, or in the stable neighbourhood of, the linear neutral curve, the nonlinear evolution of the amplitude of the linear
openaire +2 more sources
Airfoil wake vortex characteristics in the far field [PDF]
Tangential and axial velocity profiles were measured in the far field wake vortices of several different airfoils. The results are summarized and discussed.
Ciffone, D. L. +2 more
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