Download or read book Turbulence in the Free Atmosphere written by N. Vinnichenko and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence-the randomly disordered movement of volumes of air of widely varying size-is one of the characteristic features of atmospheric air flows; its investigation is essential for the solution of several theoretical and practical problems. Until recently, owing to experimental difficulties, research on turbu lence was confmed mainly to the lower half of the troposphere. Theoretical investigations have consequently been based on these data. The rapid development of high-altitude aviation and cases of aircraft encoun tering hazardous turbulence led to a sharp intensification of research on turbu lence in the atmosphere up to 10-12 km, and subsequently at greater altitudes. Such research was confined initially to the characterization of the frequency of occurrence of gusts of different speeds, their relation to altitude, geographical conditions, time of day and year, and so on. At the end of the fifties, when the required measuring equipment and experimental techniques had been developed, it became possible to investigate the complete statistical characteristics of turbu lence: the spectral densities of the velocity fluctuations of air flows, structure functions, etc. These data stimulated the further development of theory related to the specific conditions of the free atmosphere.
Download or read book Measurement of Turbulence in the Free Atmosphere written by Great Britain. Air Ministry. Meteorological Research Committee and published by . This book was released on 1942 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Turbulence in the Free Atmosphere Comments on M R P 64 written by W. Swinbank and published by . This book was released on 1943 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence in the Atmosphere written by John C. Wyngaard and published by Cambridge University Press. This book was released on 2010-01-28 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on his over forty years of research and teaching, John C. Wyngaard's textbook is an excellent up-to-date introduction to turbulence in the atmosphere and in engineering flows for advanced students, and a reference work for researchers in the atmospheric sciences. Part I introduces the concepts and equations of turbulence. It includes a rigorous introduction to the principal types of numerical modeling of turbulent flows. Part II describes turbulence in the atmospheric boundary layer. Part III covers the foundations of the statistical representation of turbulence and includes illustrative examples of stochastic problems that can be solved analytically. The book treats atmospheric and engineering turbulence in a unified way, gives clear explanation of the fundamental concepts of modeling turbulence, and has an up-to-date treatment of turbulence in the atmospheric boundary layer. Student exercises are included at the ends of chapters, and worked solutions are available online for use by course instructors.
Download or read book Some Spectra of Turbulence in the Free Atmosphere written by Aaron Fleisher and published by . This book was released on 1957 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The average rate at which the radar signal crosses a voltage level is linearly dependent on the root mean square of the turbulent wind component in the direction of the beam (1, 2), and therefore constitutes an anemometer with these characteristics. All tracers within the illuminated volume contribute to the signal. This anemometer therefore senses an average over the space they occupy which is at most equivalent to a cylinder standing half a pulse length high and straddling a diameter equal to the product of the range and beamwidth.
Download or read book Radar Measurement of the Spectra of Turbulence in the Free Atmosphere written by John D. Stackpole and published by . This book was released on 1959 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relative motion of precipitation particles causes fluctuations in a radar signal reflected from a number of such scatterers. These fluctuations contain information about the wind structure in the volume sampled by the radar since the wind causes the relative motions. The output of the R-meter, a device which measures the rate at which the fluctuating signal crosses a specified voltage level, measures the standard deviation of the relative gust velocity distribution within the sampled volume and, as such, is a measure of the intensity of the turbulence. Hannonic analysis of the R-meter record reveals that the turbulent intensity at various altitudes from 600 feet to 18,000 feet varies periodically with a frequency near 0.005 cps. The shape of the turbulence spectra are compared with the theoretical shape predicted by the Kolmogoroff theory of turbulent energy decay but no significant agreement is found. The location of the spectral maxima, combined with measurements of the wind, gives evidence that the rainy atmosphere is composed of an array of relatively more and less turbulent regions transported with the wind. The dimensions of the array are seen to be on the order of 11,000 feet in agreement with measured convective cell sizes, which implies that they may well be caused by convective processes present even in stratiform rain.
Download or read book Turbulence in the Free Atmosphere written by N. K. Vinnichenko and published by . This book was released on 1980 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence-the randomly disordered movement of volumes of air of widely varying size-is one of the characteristic features of atmospheric air flows; its investigation is essential for the solution of several theoretical and practical problems. Until recently, owing to experimental difficulties, research on turbu lence was confmed mainly to the lower half of the troposphere. Theoretical investigations have consequently been based on these data. The rapid development of high-altitude aviation and cases of aircraft encoun tering hazardous turbulence led to a sharp intensification of research on turbu lence in the atmosphere up to 10-12 km, and subsequently at greater altitudes. Such research was confined initially to the characterization of the frequency of occurrence of gusts of different speeds, their relation to altitude, geographical conditions, time of day and year, and so on. At the end of the fifties, when the required measuring equipment and experimental techniques had been developed, it became possible to investigate the complete statistical characteristics of turbu lence: the spectral densities of the velocity fluctuations of air flows, structure functions, etc. These data stimulated the further development of theory related to the specific conditions of the free atmosphere.
Download or read book Measurements of Turbulence in the Atmosphere written by and published by . This book was released on 1967 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence in Free Atmosphere written by and published by . This book was released on 1972 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report is concerned mainly with outlining the results of experimental investigations. Along with these, the authors discuss those questions in the theory of turbulence without which physical analysis of the presented data is difficult. The book also contains a description of instruments for measuring various parameters of turbulence in the free atmosphere.
Download or read book Atmospheric Turbulence Measurements Obtained from Airplane Operations at Altitudes Between 20 000 and 75 000 Feet for Several Areas in the Northern Hemisphere written by Thomas L. Coleman and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measurement of Turbulence in Upper Atmosphere written by D. N. Harrison and published by . This book was released on 1947 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Structure of Atmospheric Turbulence written by John Leask Lumley and published by . This book was released on 1964 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Suggested Method for Measuring Turbulence written by Charles Fayette Taylor and published by . This book was released on 1931 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The desirability of a quantitative measure of turbulence is emphasized, and a possible method of attack on the problem is discussed. Data are presented to show that the hot-wire aneomometer has possibilities as an instrument for measuring turbulence. An apparatus consisting essentially of two hot wires, one parallel to the air flow and one at right angles to it, is suggested. Further study of the possibilities of such an apparatus is recommended.
Download or read book Radio Meteorology written by Bradford R. Bean and published by . This book was released on 1966 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Meteorology written by Roland Stull and published by Sundog Publishing, LLC. This book was released on 2018 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quantitative introduction to atmospheric science for students and professionals who want to understand and apply basic meteorological concepts but who are not ready for calculus.
Download or read book Flight Assessment of an Atmospheric Turbulence Measurement System with Emphasis on Long Wavelengths written by Richard H. Rhyne and published by . This book was released on 1976 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence in the Free Atmosphere written by Nikolai K. Vinnichenko and published by . This book was released on 1980 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
