The Use of a Laser Doppler Velocimeter in Supersonic Flow PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Use of a Laser Doppler Velocimeter in Supersonic Flow PDF full book. Access full book title The Use of a Laser Doppler Velocimeter in Supersonic Flow by William Joseph Yanta. Download full books in PDF and EPUB format.
Author: William Joseph Yanta Publisher: ISBN: Category : Aerodynamics, Supersonic Languages : en Pages : 64
Book Description
Results are presented for an experimental program which investigated the application of an LDV technique in supersonic flows. This paper presents an analysis of the behavior of light-scattering particles in rapidly accelerating or shock decelerated flows, an evaluation of particle production techniques and the results of several velocity measurements. Measurements included the velocity distribution along the nozzle centerline and flow over a diamond airfoil in a Mach 3 tunnel and velocity profiles for a turbulent boundary layer in a Mach 4.8 facility. It is demonstrated that LDV measurements can be made consistently with errors of less than five percent if the particle lag is considered. (Author).
Author: William Joseph Yanta Publisher: ISBN: Category : Aerodynamics, Supersonic Languages : en Pages : 64
Book Description
Results are presented for an experimental program which investigated the application of an LDV technique in supersonic flows. This paper presents an analysis of the behavior of light-scattering particles in rapidly accelerating or shock decelerated flows, an evaluation of particle production techniques and the results of several velocity measurements. Measurements included the velocity distribution along the nozzle centerline and flow over a diamond airfoil in a Mach 3 tunnel and velocity profiles for a turbulent boundary layer in a Mach 4.8 facility. It is demonstrated that LDV measurements can be made consistently with errors of less than five percent if the particle lag is considered. (Author).
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher: ISBN: Category : Aerodynamic measurements Languages : en Pages : 264
Book Description
;Contents: An introduction to the laser; Principles of holography; Mathematical methods in coherent optical systems analysis; Effects of coherence on flow visualization methods; Aerodynamic holography; Experimental holography; Characteristics of dielectric holograms; Applications of pulsed laser holography; Laser beam probing for aerodynamic flow field analysis; The laser in high speed photography; Laser metrology; Application of duel scatter laser doppler velocimeters for wind tunnel measurements.
Author: F H. Smith Publisher: ISBN: Category : Wind tunnels Languages : en Pages : 76
Book Description
The report describes the application of a laser Doppler velocimeter (LDV) in a transonic wind tunnel. The LDV, an in-house-developed instrument, measured two velocity components using the dual scatter principle. The flow was not seeded for this test, and the output data was processed by a special data processor developed at AEDC. The velocity data and flow angularity are presented for five Mach numbers together with the velocities obtained using conventional wind-tunnel instrumentation.
Author: Alain Boutier Publisher: John Wiley & Sons ISBN: 1118569334 Category : Science Languages : en Pages : 436
Book Description
In fluid mechanics, velocity measurement is fundamental in order to improve the behavior knowledge of the flow. Velocity maps help us to understand the mean flow structure and its fluctuations, in order to further validate codes. Laser velocimetry is an optical technique for velocity measurements; it is based on light scattering by tiny particles assumed to follow the flow, which allows the local fluid flow velocity and its fluctuations to be determined. It is a widely used non-intrusive technique to measure velocities in fluid flows, either locally or in a map. This book presents the various techniques of laser velocimetry, as well as their specific qualities: local measurements or in plane maps, mean or instantaneous values, 3D measurements. Flow seeding with particles is described with currently used products, as well as the appropriate aerosol generators. Post-processing of data allows us to extract synthetic information from measurements and to perform comparisons with results issued from CFD codes. The principles and characteristics of the different available techniques, all based on the scattering of light by tiny particles embedded in the flow, are described in detail; showing how they deliver different information, either locally or in a map, mean values and turbulence characteristics.
Author: Jim Trolinger Publisher: ISBN: 9789283504801 Category : Aerodynamics Languages : en Pages : 179
Book Description
A brief introduction to coherent optics and laser is given to provide a review and common language to the reader. The material is presented at a level to be understood by engineers who are working in the aerospace field and who are interested in the experimental application of lasers in research and development. An emphasis is placed on applications in aerodynamics, and examples have been selected from a number of laboratories in the NATO countries visited by the author while preparing the material. The applications include holography, laser velocimetry, spectroscopy, and the use of lasers simply as efficient light sources in conventional measurement methods. Keywords: Lasers; Holography; Flow measurement; Aerodynamic holography; Laser velocimetry; Laser spectroscopy; Aerodynamics; Speed indicators; Spectroscopy. (jhd).
Author: William Joseph Yanta
Author: William Joseph Yanta
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Author: Alain Boutier
Author: F H. Smith
Author: Alain Boutier
Author: Jim Trolinger
Author: 
Author: 
Author: 
Author: