Results 261 to 270 of about 372,230 (299)
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1974
The movement of water around the hydrological cycle takes place in response to a series of merging potential gradients, the water moving because there is nothing to stop it; obviously at some point in the cycle a substantial quantity of energy must be injected and as we have seen this comes from the sun and is used almost entirely in the conversion of ...
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The movement of water around the hydrological cycle takes place in response to a series of merging potential gradients, the water moving because there is nothing to stop it; obviously at some point in the cycle a substantial quantity of energy must be injected and as we have seen this comes from the sun and is used almost entirely in the conversion of ...
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Vertical entry of solids into water
Fluid Dynamics, 1985The vertical inertial entry of spheres and disks of various masses into water has been investigated experimentally. The values of the virtual mass and the drag coefficients are estimated with the aid of high-speed photography of the penetration process. An expression is obtained for the nonstationary cavity near the body.
Yu. K. Bivin +2 more
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SPH simulations on water entry characteristics of a re-entry capsule
Engineering Analysis with Boundary Elements, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shi, Wenkui +3 more
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A STUDY OF THE WATER-ENTRY CAVITY
1963Abstract : For missiles producing clean cavities after water entry the cavity development is shown by theory to depend significantly only on: entry angle, an effective mass, and a Froude number based on the nose-flat diameter. A method is outlined for estimating pressures in closed, almost-steady cavities, from cavity geometry. Data from application of
William R. Hoover, Albert May
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Vertical Entry of Missiles into Water
Journal of Applied Physics, 1952Investigations, carried out principally on the vertical water entry of steel spheres, are described. Graphs show the effect of several experimental parameters on the time and place of occurrence of various events in the life of the cavity which accompanies the entry.
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New Entries to Water‐Compatible Lewis Acids
ChemInform, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Shu, Kobayashi, Chikako, Ogawa
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Violent water entry of spheres
European Journal of Mechanics - B/Fluids, 2019Abstract Water entry is an impulsive two-phase flow often met in nature and in industrial processes. Violent vertical entries are observed when the projectile is heavy and when the Froude number is high enough: they form a distinct category characterized by an elongated cavity trailed by the projectile.
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Asymmetric water entry of a wedge
2003A mapping method of the complex analysis is used to study the water entry of asymmetric wedges. The problem is solved by using the expressions of the complex potential and velocity constructed by Chaplygin's singular points method extended to solve free boundary problems with an arbitrary boundary condition on the free surface. In this way the boundary
Y Semenov, A Iafrati
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Water Entry of Thin Hydrofoils
2011First order methods conformably to entry of thin foils in incompressible fluids are considered. Two of them have been based on complex variables and the speed function as well as the partial time-derivative are obtained, another two methods are based on the time depended Green function and Fourier transformation, respectively. For examples, an entry of
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