Results 261 to 270 of about 45,044 (305)

The density of accreted ice

Quarterly Journal of the Royal Meteorological Society, 1986
AbstractThe density of accreted ice has been experimentally investigated by performing local measurements with a technique based on X‐ray micrography of calibrated slices.Accreted ice deposits were grown on fixed cylinders, which allowed an investigation of the accretion process in steadier and more regular conditions at the stagnation point, avoiding ...
F. Prodi, L. Levi, P. Pederzoli
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The opacity of accreted ice

Quarterly Journal of the Royal Meteorological Society, 1975
AbstractA technique which yields quantitative measurements of the opacity of accreted ice deposits is described. This consists of determining the attenuation of a light beam as it passes through a thin section of the deposit, using a photovoltaic cell as the detector. The transmittance of the deposits is related to the air bubble concentration, and the
JN CARRAS, WC MACKLIN
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Aging of Accreted Ice

Journal of the Atmospheric Sciences, 1980
Abstract The effect of annealing in accreted ice has been investigated for artificially grown ice deposits after ∼100 days of storage in a deep freeze unit. Cross sections of the cylindrical deposits have been cut and replicated soon after growth and after annealing to determine the average cross section σ¯, the maximum length li, the maximum width wi,
F. Prodi, L. Levi
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Sponginess in ice grown by accretion

Quarterly Journal of the Royal Meteorological Society, 1974
AbstractIce was grown by accretion on rotating embryos at air temperatures of −6, −12 and −24°C while the liquid water content ranged approximately between 1 and 4 g m−3. The air speed in the wind tunnel and the modal droplet diameter were, respectively, 20 m s−1 and 13 μm.
D. V. D. S. Roos, H.‐D. R. Pum
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Modeling of Ice Accretion on Wires

Journal of Climate and Applied Meteorology, 1984
A time-dependent numerical model of ice accretion on wires, such as overhead conductors, is presented. Simulations of atmospheric icing are made with the model in order to examine the dependence of the accreted ice amount on atmospheric conditions. The results show that in wet growth (glaze formation) under constant atmospheric conditions, the growth ...
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Crystal size in accreted ice

Quarterly Journal of the Royal Meteorological Society, 1975
AbstractStudies have been made of the crystallographic orientation of 100μm‐radius supercooled droplets frozen on ice substrates whose c‐axis orientations varied from 0 to 90° to the surface normal. For a given droplet temperature and substrate orientation, there is a critical substrate temperature below which a frozen droplet has a high ( > 0·8 ...
PJ RYE, WC MACKLIN
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The Prevention of Ice Accretion

Aircraft Engineering and Aerospace Technology, 1935
FLYING, in common with all means of transport, is affected by adverse weather conditions, but the necessity of aeroplanes maintaining flying speed introduces a major difficulty of its own. The older forms of transport are able, in the last resort, to evade their difficulties by coming to a dead stop. An aeroplane must, literally, fly in the face of its
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The Prevention of Ice Accretion

The Journal of the Royal Aeronautical Society, 1936
Flying, in common with all means of transport, is affected by adverse weather conditions, but the necessity of aeroplanes to maintain flying speed introduces a major difficulty of its own. The older forms of transport are able, in the last resort, to evade their difficulties by coming to a dead stop. An aeroplane must, literally, fly in the face of its
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Stochastic models of ice accretion

Atmospheric Research, 1994
Abstract New stochastic models have been developed to simulate atmospheric ice accretions at low values of impaction parameters. In 2-dimensional models of ice accretion on cylindrical objects (disks impinging on a larger size disk) the restriction of rectilinear trajectories is removed and some flow dynamics is introduced by analytically calculating
PRODI, Franco, SMARGIASSI E., PORCU', Federico   +2 more
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Air bubbles in accreted ice

Quarterly Journal of the Royal Meteorological Society, 1975
AbstractOn the assumption that the concentration of air bubbles formed in freezing water is a function of the freezing rate, an expression for the concentration of air bubbles in accreted ice has been deduced. This expression has been confirmed by measurements of the bubble concentrations and size distributions in frozen bulk water and in ice accreted ...
J. N. Carras, W. C. Macklin
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