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An Experimental Investigation Of Vortex Generation In A Turbulent Boundary Layer Undergoing Adverse Pressure Gradient
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Book Synopsis An Experimental Investigation of Vortex Generation in a Turbulent Boundary Layer Undergoing Adverse Pressure Gradient by : Victor Zakkay
Download or read book An Experimental Investigation of Vortex Generation in a Turbulent Boundary Layer Undergoing Adverse Pressure Gradient written by Victor Zakkay and published by . This book was released on 1972 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis An Experimental Investigation of the Flow Structure of the Turbulent Boundary Layer by : Peter W. Runstadler
Download or read book An Experimental Investigation of the Flow Structure of the Turbulent Boundary Layer written by Peter W. Runstadler and published by . This book was released on 1963 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: A combination of visual and quantitative measurements is presented, providing a physical picture of the turbulent boundary layer flow structure on a flat plate. The flow structure is shown to consist of three zones, each zone has a one to one correspondence to the well known regions of the u+, y+ mean velocity profile. A wall layer region is shown to exist below y+ = 10. An apparently fully turbulent region exists corresponding to the logarithmic ''law of the wall'' and the ''buffer'' region. An intermittent zone appears to agree closely with the ''wake'' deviation region. An entirely new result of the investigation is the delineation of the structure of the wall layer region. This region is shown to contain a relatively regular structure of low and high velocity fluid streaks alternating in the span direction, together with the ejection of low momentum fluid into the outer flow. Correlations are given for the rate of ejection and the streak spacing. A qualitative description of other features of the wall layer region and the character of the remainder of the boundary layer flow structure is presented. (Author).
Book Synopsis Shock Wave-Boundary-Layer Interactions by : Holger Babinsky
Download or read book Shock Wave-Boundary-Layer Interactions written by Holger Babinsky and published by Cambridge University Press. This book was released on 2011-09-12 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Contractor Report written by and published by . This book was released on 1982 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of Compressible Boundary Layers Under the Influence of Pressure Gradients by : Raymond C. Wier
Download or read book Experimental Investigation of Compressible Boundary Layers Under the Influence of Pressure Gradients written by Raymond C. Wier and published by . This book was released on 1996-12-01 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effect of mild pressure gradients on the mean and turbulent flow of high-speed boundary layers. Three Mach numbers (1.7, 3.0 and 5.0) were investigated. Three pressure gradients were examined; a zero pressure gradient (ZPG), a favorable pressure gradient (FPG), and a combined pressure gradient (CPG). The CPG consisted of an adverse pressure gradient followed by a favorable pressure gradient. Conventional pressure probes, hot- wire and particle image velocimetry (PIV) were used to examine the flow. Measurement included mean velocity, velocity turbulence intensity, mass flux turbulence intensity and energy spectra. Instantaneous (10 nsec) Mie scattering flow visualizations were acquired. Qualitatively, the flow visualizations indicated that the turbulent flow structures were strongly affected by the pressure gradients. For the Mach 2,8 case, the PIV contours and the hot-wire profiles both indicated that the boundary layer thickness increased by 40% and decreased by 100% relative to the ZPG for the favorable and adverse pressure gradients, respectively. Further, the PIV and hot-wire data indicated that the axial turbulence intensity levels increased by 22% for the CPG and decreased by 25% for the FPG. The energy spectra data indicated that once a pressure gradient was applied (favorable or adverse) the low frequency energy increased followed by a rapid decay. Lastly, it was found that nominally 20 to 30 PIV images were sufficient for mean flow boundary layer velocities, but 93 images (the maximum recorded in this study) were insufficient to adequately resolve Reynolds shear stresses.
Book Synopsis An Experimental Investigation of Forced Mixing of a Turbulent Boundary Layer in an Annular Diffuser by : Robert Joseph Shaw
Download or read book An Experimental Investigation of Forced Mixing of a Turbulent Boundary Layer in an Annular Diffuser written by Robert Joseph Shaw and published by . This book was released on 1981 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1972-10 with total page 1290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preliminary Experimental Investigation of Effect of Free-stream Turbulence on Turbulent Boundary-layer Growth by : S. J. Kline
Download or read book Preliminary Experimental Investigation of Effect of Free-stream Turbulence on Turbulent Boundary-layer Growth written by S. J. Kline and published by . This book was released on 1960 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Streamline Curvature on Turbulent Flow by : Peter Bradshaw
Download or read book Effects of Streamline Curvature on Turbulent Flow written by Peter Bradshaw and published by . This book was released on 1973 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Streamline curvature in the plane of the mean shear produces large changes in the turbulence structure of shear layers, usually an order of magnitude more important than normal pressure gradients and other terms in the mean-motion equations for curved flows. The effects on momentum and heat transfer in boundary layers are noticeable on typical wing sections and are very important on highly-cambered turbomachine blades: turbulence may be nearly eliminated on highly-convex surfaces, while on highly-concave surfaces momentum transfer by quasi-steady longitudinal vortices dominates the ordinary turbulence processes. The greatly enhanced mixing rates of swirling jets and the characteristic non-turbulent cores of trailing vortices are also consequences of the effects of streamline curvature on the turbulence structure. A progress report, comprises a review of current knowledge, a discussion of methods of predicting curvature effects, and a presentation of principles for the guidance of future workers.
Book Synopsis Reports and Memoranda - Aeronautical Research Council by : Aeronautical Research Council (Great Britain)
Download or read book Reports and Memoranda - Aeronautical Research Council written by Aeronautical Research Council (Great Britain) and published by . This book was released on 1976 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reports and Memoranda written by and published by . This book was released on 1976 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with no. 650 each hundredth number contains a list of the Reports and memoranda published since the last list.
Book Synopsis MRIS Abstracts by : Maritime Research Information Service
Download or read book MRIS Abstracts written by Maritime Research Information Service and published by . This book was released on 1973 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of Leeside Flow Field Heat Transfer on Shuttle Orbiter Configuration by :
Download or read book A Study of Leeside Flow Field Heat Transfer on Shuttle Orbiter Configuration written by and published by . This book was released on 1984 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compressible Turbulent Boundary Layer Computations for Flow with Longitudinal Curvature by : Walter B. Sturek
Download or read book Compressible Turbulent Boundary Layer Computations for Flow with Longitudinal Curvature written by Walter B. Sturek and published by . This book was released on 1975 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A numerical study has been performed using a finite-difference boundary layer computer program that includes corrections to the equations of motion for longitudinal curvature and allows the static pressure to be specified as a known function of x and y. Calculations with and without the corrections for longitudinal curvature and pressure gradient normal to be the local surface have been compared to experimental measurements of a supersonic turbulent boundary layer flow over a surface with concave longitudinal curvature. Substantially improved agreement with experimental measurements is obtained for the calculations including corrections for wall curvature and pressure gradient normal to the local surface for density profile, skin friction coefficient, and boundary-layer integral properties.
