Laser Doppler Shift Velocimeter PDF Download
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Author: F. N. Weber (Jr.)
Publisher:
ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 38
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Book Description
Author: F. N. Weber (Jr.)
Publisher:
ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 38
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Book Description
Author: Ronald J. Adrian
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 644
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Book Description
Author: B. M. Watrasiewicz
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 176
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Book Description
Author: Warren H. Stevenson
Publisher:
ISBN:
Category : Fluid dynamic measurements
Languages : en
Pages : 580
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Book Description
Author: Franz Mayinger
Publisher: Springer Science & Business Media
ISBN: 3662029677
Category : Science
Languages : en
Pages : 462
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Book Description
Increasing possibilities of computer-aided data processing have caused a new revival of optical techniques in many areas of mechanical and chemical en gineering. Optical methods have a long tradition in heat and mass transfer and in fluid dynamics. Global experimental information is not sufficient for developing constitution equations to describe complicated phenomena in fluid dynamics or in transfer processes by a computer program . Furthermore, a detailed insight with high local and temporal resolution into the thermo-and fluiddynamic situations is necessary. Sets of equations for computer program in thermo dynamics and fluid dynamics usually consist of two types of formulations: a first one derived from the conservation laws for mass, energy and momentum, and a second one mathematically modelling transport processes like laminar or turbulent diffusion. For reliably predicting the heat transfer, for example, the velocity and temperature field in the boundary layer must be known, or a physically realistic and widely valid correlation describing the turbulence must be avail able. For a better understanding of combustion processes it is necessary to know the local concentration and temperature just ahead of the flame and in the ignition zone.
Author: Le-cong Phung
Publisher:
ISBN:
Category : Blood flow
Languages : en
Pages : 566
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Book Description
Author: William Joseph Yanta
Publisher:
ISBN:
Category : Laser Doppler velocimeter
Languages : en
Pages : 104
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Book Description
Turbulence measurements with a Laser Doppler Velocimeter (LDV) using the dual scatter or differential Doppler mode have been made in a subsonic, fully developed channel flow. The measurements were made using only those light scattering particles occurring naturally in air. Results include mean velocity profiles, turbulence intensities, Reynolds stress distributions and a skewness measurement of the velocity distribution function across the channel. Statistical techniques were used to obtain the various turbulence parameters. Guidelines have been established for the amount of data needed to obtain results with a specified accuracy and confidence level. Measurements have also been made to determine the particle-size distribution. An aerodynamic means was used to determine the size distribution, in contrast to the usual optical procedures. (Modified author abstract).
Author: George H. Mycroft
Publisher:
ISBN:
Category : Doppler effect
Languages : en
Pages : 17
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Book Description
The preliminary design of a laser Doppler velocimeter (LDV) for a particular application requires the determination of the frequency-to-velocity conversion constant and the spacial resolution of the focal volume. These parameters give the frequency range required of the signal processing electronics and the size of the region in which velocity measurements are being made. These values are determined from the laser wavelength, the focal length of the focusing lens, the angle of the LDV beam pair intersection, and the diameter of the focused beams at the intersection. A set of nomographic scales has been developed to allow rapid and accurate determination of these parameters. They are also particularly useful in evaluating the effects of parameter variation and optimization of the LDV. (Author).
Author: Henry T. Kalb
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Book Description
The patent describes an apparatus for extracting doppler shift frequency information from signals which are produced by dual scatter laser velocimeter over the doppler frequency range of 1 to 300 MHz. The laser doppler velocimeter data which is translated and processed into a form compatible with digital computer inputs may be obtained for very short scan times.
Author: Luther R. Gartrell
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
