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Smoke transport by sheared winds
Combustion Theory and Modelling, 1999The effect that the wind's vertical variation has on fire plume behaviour is investigated. A parabolized set of governing equations are discretized using finite differences to arrive at the numerical model. Lagrangian particles are used to visualize the flow, account for atmospheric fluctuations and determine the smoke concentration field. A parametric
Javier Trelles +2 more
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Sources and Detection of Atmospheric Wind Shear
AIAA Journal, 1981This paper outlines a range of phenomena producing significant atmospheric wind shears, providing more details on the shears related to thunderstorm gust fronts. A case study from a wintertime Colorado front-range experiment during 1980 documents strong wind gradients that can occur in the lees of mountains.
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Summer Meeting, 1963
An analytical study of dynamic loads induced by wind shear is reported In the first portion of the study, the effect of simplifications in the equations of motion on solution accuracy is investigated Pitch-plane wind-shear bending moments on a hypothetical boost-glide vehicle are determined using three methods In the first method the equations used are
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An analytical study of dynamic loads induced by wind shear is reported In the first portion of the study, the effect of simplifications in the equations of motion on solution accuracy is investigated Pitch-plane wind-shear bending moments on a hypothetical boost-glide vehicle are determined using three methods In the first method the equations used are
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Wind shear in a monsoon depression
Nature, 1978DEPRESSIONS of the Bay of Bengal are an important component of the south-west monsoon circulation. Moving WNW, they account for much of the rainfall in India. Synoptic conditions favouring formation of monsoon depressions, so far described, are: (1) trailing of the axis of the monsoon trough into the head Bay of Bengal; (2) movement of a low pressure ...
C. R. V. RAMAN +3 more
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Wind shear and hyperbolic distributions
Boundary-Layer Meteorology, 1989A data set on wind shear, consisting of 24 frequency distributions of changes in headwind speed experienced by aircraft during landing phase, is modelled parsimoniously by means of the hyperbolic distribution.
Barndorff-Nielsen, Ole Eiler +2 more
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On wind shear at fronts and inversions
Meteorology and Atmospheric Physics, 1996In the past, experimental investigations as well as theoretical considerations have shown that within fronts and inversions wind shear and vertical temperature gradient adjust in such a way that the Richardson number is at its critical value. Results from aircraft measurements now suggest that the shear within moving cold fronts, warm fronts and ...
Ch. Jacobi, A. H. Siemer, R. Roth
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Analysis of extreme wind shear
27th Aerospace Sciences Meeting, 1989New methods utilizing extreme value statistical theory are applied in the analysis of the largest wind component shear in a wind profile as a function of shear layer thickness and season. Seasonal variability of extreme shear decreases as the shear layer thickness decreases.
Stanley I. Adelfang, Orvel E. Smith
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Wind shear characteristics of local winds
2009The paper deals with the investigations of wind characteristics of local winds in the coastal area of Croatia. The measurements of wind speed and direction were carried out on an antenna column at heights of 10, 20 and 35 m. The objective of these measurements was to determine the wind characteristics for dominant winds (bura, jugo, levant) according ...
Peroš, Bernardin +2 more
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Perspectives on Wind Shear Flight
1991Wind shears originating from downbursts have been the cause of many aircraft accidents in the past two decades. In turn, this has led to considerable research on wind shear avoidance systems and wind shear recovery systems. This paper reviews recent advances in wind shear recovery systems.
A. Miele, T. Wang, G. D. Wu
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Impact of vertical wind shear on wind turbine performance
2017 International Conference on Circuit ,Power and Computing Technologies (ICCPCT), 2017This is paper presents significance of vertical wind shear. Voltage flicker that may be initiated in the output of the horizontal axis upwind wind turbine located at any given site for a given tower height and blade length. Vertical wind shear is one of the important parameters which instigate voltage flicker in wind turbine output voltage.
Datta S. Chavan +7 more
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