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Expansion Effects On Supersonic Turbulent Boundary Layers
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Book Synopsis Expansion Effects on Supersonic Turbulent Boundary Layers by :
Download or read book Expansion Effects on Supersonic Turbulent Boundary Layers written by and published by . This book was released on 1994 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of various expansion regions on the large scale structure of a Mach 3 fully-developed-turbulent boundary layer are investigated. Five cases are studied: 7 deg and 14 deg centered expansions, 7 deg and 14 deg gradual expansions, and the flat plate. Multi-point surface pressure measurements, filtered Rayleigh scattering visualizations, and double-pulse visualizations were employed. Plan view images of the flat plate boundary layer reveal the presence of structures of a very large streamwise, and limited spanwise, extent. These structures were found well above the inner layer, nominally at n/delta = 0.5-1.0. The structures were also found in the expanded boundary layers. Across the expansion, the large scale structures of the outer layer undergo an increase in scale and structure angle. The small scale turbulent motions of the incoming boundary layer are quenched by the expansion, while the large scale structures respond more gradually. Convection velocities from the pressure correlations are reasonable in the incoming boundary layer, but unreasonably high in the expanded boundary layers. Convection velocities from correlations of double-pulse images appear reasonable. The discrepancy between the two results suggests the relationship between the large scale structures and the convecting pressure field is severely altered by the expansions.
Book Synopsis The Effects of Expansion Regions on Supersonic Turbulent Boundary Layers by : Stephen Andrew Arnette
Download or read book The Effects of Expansion Regions on Supersonic Turbulent Boundary Layers written by Stephen Andrew Arnette and published by . This book was released on 1995 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Expansion Regions on the Turbulence Structure of a Supersonic Boundary Layer by :
Download or read book The Effects of Expansion Regions on the Turbulence Structure of a Supersonic Boundary Layer written by and published by . This book was released on 1996 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fully-developed high Reynolds number Mach 3 turbulent boundary layer and the effects of four expansion regions (centered and gradual expansions of 7 deg and 14 deg) on the boundary layer were investigated by utilizing 1) multi-point instantaneous surface pressure measurements, 2) instantaneous single- and double-pulse flow visualizations based on Filtered Rayleigh Scattering (FRS), 3) two-component planar velocity measurements using Filtered Planar Velocimetry (FPV), and 4) detailed turbulence measurements using Laser Doppler Velocimetry (LDV). Flow visualization results indicate that the upper half of the fully developed turbulent boundary layer is populated with elongated longitudinal structures of considerable streamwise but very limited spanwise extent. These structures are randomly distributed in space and time and survive even the 14 deg centered expansion. The visualizations also show that large scale structures increase both in size and angle and small scale structures are quenched across the expansions. The angle of large scale structures return to the flat plate value further downstream of the expansions. The normalized power spectra of pressure fluctuations downstream of the expansions are more concentrated at lower frequencies than their upstream counterparts, confirming the small scale quenching shown by flow visualizations.
Book Synopsis Supersonic Mixing of Jets and Turbulent Boundary Layers by : Harry Edward Bailey
Download or read book Supersonic Mixing of Jets and Turbulent Boundary Layers written by Harry Edward Bailey and published by . This book was released on 1958 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approximate Turbulent Boundary-layer Development in Plane Compressible Flow Along Thermally Insulated Surfaces with Application to Supersonic-tunnel Contour Correction by : Maurice Tucker
Download or read book Approximate Turbulent Boundary-layer Development in Plane Compressible Flow Along Thermally Insulated Surfaces with Application to Supersonic-tunnel Contour Correction written by Maurice Tucker and published by . This book was released on 1950 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an application of the method, the contour correction of supersonic nozzles for the effects of boundary-layer development is discussed from the requirement of continuity of mass flow and from the requirement of expansion- and shock-wave elimination.
Book Synopsis The Effects of Expansion on a Supersonic Boundary Layers by : Jonathan A. Dawson
Download or read book The Effects of Expansion on a Supersonic Boundary Layers written by Jonathan A. Dawson and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Sudden Expansions and Compressions on Turbulent Boundary Layer Momentum Thickness in Supersonic Flow by : Leonard Paul Hampton
Download or read book The Effect of Sudden Expansions and Compressions on Turbulent Boundary Layer Momentum Thickness in Supersonic Flow written by Leonard Paul Hampton and published by . This book was released on 1983 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Investigation of Supersonic Turbulent Boundary Layers After an Expansion Via Wall Pressure Measurements by : Jonathan Adam Dawson
Download or read book An Experimental Investigation of Supersonic Turbulent Boundary Layers After an Expansion Via Wall Pressure Measurements written by Jonathan Adam Dawson and published by . This book was released on 1993 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analysis of the Interaction of a Boundary Layer and the Corner-expansion Wave in Supersonic Flow by : P. H. Oosthuizen
Download or read book An Analysis of the Interaction of a Boundary Layer and the Corner-expansion Wave in Supersonic Flow written by P. H. Oosthuizen and published by . This book was released on 1967 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theoretical study of the effects of the wall boundary layer on the supersonic flow around a sharp convex corner is presented. Fundamentally different methods of analysis are adopted for laminar and for turbulent boundary layers. In the case of interactions involving laminar boundary layers, an analysis based on the use of classical boundary layer theory is used. Results of numerical calculations carried out using this analysis to predict the effects of the major governing parameters are presented. In all cases, a considerable upstream and downstream influence is predicted. A simplified form of this analysis, closely related to that of Curle, is also presented, this analysis leading to a simple set of explicit equations describing the flow quantities in the interaction region. Comparison of the simplified analysis with results obtained from the full analysis indicated, as is to be expected, that the simplified analysis will only give acceptable results for small expansion angles and moderate Mach numbers. In the case of turbulent boundary layer interactions, an analysis based on the assumption that there is no upstream influence and that the major portion of the expansion occurs in an effectively inviscid manner is adopted, the flow properties being calculated by the method of rotational characteristics. (Author).
Book Synopsis Turbulent Boundary-layer Temperature Recovery Factors in Two-dimensional Supersonic Flow by : Maurice Tucker
Download or read book Turbulent Boundary-layer Temperature Recovery Factors in Two-dimensional Supersonic Flow written by Maurice Tucker and published by . This book was released on 1951 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical method is presented for obtaining turbulent temperature recovery factors for a thermally insulated surface in supersonic flow. The method is an extension of Squire's analysis for incompressible flow. The boundary layer velocity profile is represented by a power law and a similarity is postulated for squared-velocity the static-temperature-difference profiles.
Book Synopsis final report supersonic mixing of jets and turbulent boundary layers by : harry e. bailey/ arnold m. kuethe
Download or read book final report supersonic mixing of jets and turbulent boundary layers written by harry e. bailey/ arnold m. kuethe and published by . This book was released on 1957 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbulent Shear Layers in Supersonic Flow by : Alexander J. Smits
Download or read book Turbulent Shear Layers in Supersonic Flow written by Alexander J. Smits and published by Springer Science & Business Media. This book was released on 2006-05-11 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Theoretical Face Pressure and Drag Characteristics of Forward-facing Steps in Supersonic Turbulent Boundary Layers by : D. K. Patel
Download or read book Theoretical Face Pressure and Drag Characteristics of Forward-facing Steps in Supersonic Turbulent Boundary Layers written by D. K. Patel and published by . This book was released on 1975 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Expansion Corner Effects on Hypersonic Shock Wave/turbulent Boundary Layer Interactions by : Michael E. White
Download or read book Expansion Corner Effects on Hypersonic Shock Wave/turbulent Boundary Layer Interactions written by Michael E. White and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Aspects of the Structure of Supersonic Turbulent Boundary Layers by : Alexander J. Smits
Download or read book Fundamental Aspects of the Structure of Supersonic Turbulent Boundary Layers written by Alexander J. Smits and published by . This book was released on 1988 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulk Dilatation Effects on Reynolds Stresses in the Rapid Expansion of a Turbulent Boundary Layer at Supersonic Speed by : Jean-Paul Dussauge
Download or read book Bulk Dilatation Effects on Reynolds Stresses in the Rapid Expansion of a Turbulent Boundary Layer at Supersonic Speed written by Jean-Paul Dussauge and published by . This book was released on 1981 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anomalous Effects of Pressure Gradient on Supersonic Turbulent Boundary Layers by : P. Bradshaw
Download or read book Anomalous Effects of Pressure Gradient on Supersonic Turbulent Boundary Layers written by P. Bradshaw and published by . This book was released on 1972 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
