Author: Publisher:
ISBN:
Category :
Languages : ja
Pages : 14
Book Description
An Experiment on supersonic turbulent mixing layers
Author: Turbulent Mixing Layer Experiment in Supersonic Flow
Author: Hideo IkawaHow Australians Design and Build Australia's Own Car
Author: Publisher:
ISBN:
Category : Automobile industry and trade
Languages : ja
Pages :
Book Description
An Experimental Investigation of a Two-Dimensional, Self-Similar, Supersonic Turbulent Mixing Layer with Zero Pressure Gradient
Author: Hideo IkawaPublisher:
ISBN:
Category :
Languages : en
Pages : 39
Book Description
The effect of compressibility on the mixing layer was investigated at Mach number 2.47. Pitot pressure, static pressure and hot-wire surveys were made to investigate the mean flow and the fluctuation quantities. Similarities between supersonic and incompressible mixing layers are observed in normalized velocity profile, normalized power spectral density distribution and convection velocity distribution. Spreading rate, normalized shear stress and velocity fluctuation were found to be appreciably smaller than the respective incompressible results; e.g., the momentum thickness growth rates are 0.0073 and 0.035 for supersonic and incompressible flows, respectively. The difference between free and wall-bounded mixing layers is discussed. Development of turbulence structure of mixing layer with increasing Reynolds number was also investigated. (Author).
Results of a Shock Tube Experiment in Compressible Turbulent Mixing
Author: Richard J. SandersonPublisher:
ISBN:
Category :
Languages : en
Pages : 40
Book Description
Two-dimensional supersonic turbulent mixing layers were produced with a small shock tunnel whose driven section is divided into two parallel chambers. When desired, combustion in the mixing layer was produced by use of oxygen in one stream and an argon-hydrogen mixture in the other. Variation in refractive index through the mixing layer was measured with a Mach-Zehnder interferometer and pressures were measured with piezo-electric transducers. From these measurements, freestream conditions could be computed. Approximate temperatures could be deduced directly from the interferograms throughout the mixing layer. A finite difference computer program which solves the turbulent conservation equations in terms of an empirical eddy viscosity model and a simple ignition delay-reaction time model for the chemistry was used to reconstruct the refractive index contours. Such an approach can describe the conditions in the mixing layer to an adequate degree of accuracy. It was found that for nonreacting mixing layers, the growth rates were comparable to those obtained from the literature for incompressible layers, and that the liberation of chemical energy increased mixing rates considerably, at least for the conditions of this experiment. (Author).
Turbulent Shear Layers in Supersonic Flow
Author: Alexander J. SmitsPublisher: Springer Science & Business Media
ISBN: 0387263055
Category : Science
Languages : en
Pages : 418
Book Description
A good understanding of turbulent compressible flows is essential to the design and operation of high-speed vehicles. Such flows occur, for example, in the external flow over the surfaces of supersonic aircraft, and in the internal flow through the engines. Our ability to predict the aerodynamic lift, drag, propulsion and maneuverability of high-speed vehicles is crucially dependent on our knowledge of turbulent shear layers, and our understanding of their behavior in the presence of shock waves and regions of changing pressure. Turbulent Shear Layers in Supersonic Flow provides a comprehensive introduction to the field, and helps provide a basis for future work in this area. Wherever possible we use the available experimental work, and the results from numerical simulations to illustrate and develop a physical understanding of turbulent compressible flows.
supersonic mixing of jets and turbulent boundary layers
Author: harry e bailey, arnold m kuothoPublisher:
ISBN:
Category :
Languages : en
Pages : 54
Book Description
Free Turbulent Mixing
Author: Philip Thomas HarshaPublisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 340
Book Description
Author: Noel T. Clemens
Author: J. P. Bonnet