Download or read book Transonic Shock Interaction with a Tangentially Injected Turbulent Boundary Layer written by G. R. Inger and published by . This book was released on 1984 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes a non-asymptotic triple deck theory of transonic shock/turbulent boundary layer interaction which takes into account the influence of upstream tangential injection on a curved wall. In addition to Reynolds number and the shock strength, the theory is parameterized by arbitrary values of the incoming boundary layer shape factor, wall jet maximum velocity ratio and the nondimensional height of this ratio; results of a comprehensive parametric study are then presented. It is shown that the wall jet effects significantly reduce both the streamwise scale and displacement thickening of the interaction zone. While increasing the upstream and downstream skin friction levels, these effects also reduce the minimum interactive Cf and thus actually hasten the onset of incipient separation at the shock foot.

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 Control of Shock Wave turbulent Boundary Layer Interactions Using Tangential Injection written by John F. Donovan and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interaction Between a Normal Shock Wave and a Turbulent Boundary Layer at High Transonic Speeds written by Thomas Charles Adamson and published by . This book was released on 1980 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interaction Between a Normal Shock Wave and a Turbulent Boundary Layer at High Transonic Speeds Part 1 Pressure Distribution Part 2 Wall Shear Stress Part 3 Simplified Formulas for the Prediction of Surface Pressures and Skin Friction written by and published by . This book was released on 1980 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Normal Shock wave Turbulent Boundary layer Interaction at Transonic Speeds written by George G. Mateer and published by . This book was released on 1976 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prediction of Local Shock Effects on Transonic Shock Turbulent Boundary Layer Interaction and Downstream Flow written by G. R. Inger and published by . This book was released on 1986 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Transonic Normal Shock Wave turbulent Boundary Layer Interactions in Axisymmetric Internal Flow written by Deepak Om and published by . This book was released on 1982 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytic Investigation of Transonic Normal Shock Boundary Layer Interaction written by W. H. Mason and published by . This book was released on 1974 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in inviscid transonic flow field computational capability and supercritical airfoil design make it important to understand of the the physics of normal shock-boundary layer interactions. In this work, the Navier-Stokes equations are thoroughly investigated through the use of perturbation methods and a generalized multi-region model is proposed for interactions between weak normal shock waves and turbulent boundary layers. This model is first applied to a highly idealized case in which a uniform subsonic flow is used to model the boundary layer, and analytic results for the wall and interface pressure are obtained.

Download or read book Some Fundamental Aspects of Shock Wave Turbulent Boundary Interactions in Transonic Flow written by G. R. Inger and published by . This book was released on 1981 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transonic normal shock - turbulent boundary layer interactions can significantly influence not only the local viscous flow but also the downstream behavior of the boundary layer on aerodynamic bodies. It is therefore important that fundamentally-based analytical tools be developed for describing and scaling these interaction effects. This paper examines recent progress toward this goal, with emphasis on two aspects. (1) A basic non-asymptotic triple-deck theory of non-separating two-dimensional interactions that is applicable over a wide range of practical Reynolds numbers and boundary layer profile shapes. (2) Its applicable as a local 'interactive module' in the global transonic flow field analysis of wings, including detailed comparisons with experimental data. Also discussed is the adaptability of this theory to treat interactions involving non-adiabatic wall conditions, including the prediction of incipient separation.

Download or read book Shock Wave boundary Layer Interaction with Tangential Injection written by Essam Mohamed Mokhtar Mitwally and published by . This book was released on 1965 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On Transonic Shock Wave Boundary Layer Interaction Flow Patterns written by G. R. Inger and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is made of the existing knowledge about the interaction of impinging shock waves with laminar or turbulent boundary layers, to emphasize and illustrate that the relative degree of inviscid-dominated (solid wall-like) reflection behavior versus viscous-dominated (free surface-like) reflection is a major feature determining the disturbance flow pattern. This idea is then used to appraise existing transonic normal shock-boundary layer interaction experiments and establish an ordered relationship between them. As a result, it is shown that far from being unusual, a post-shock pocket of supersonic flow ("supersonic tongue") is in fact a common feature of all such interaction patterns, although its scale can change drastically with incident shock strength, Reynolds number and downstream conditions.

Download or read book On Transonic Shock Nonseparating Turbulent Boundary Layer Interaction in Two Dimensional Channels written by A. Kluwick and published by . This book was released on 1976 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flow model of Inger and Mason for the interaction of a weak normal shock with a turbulent non-separating boundary layer along a flat plate in an unbounded stream is generalized to the channel flow case. The understanding of such internal flows is highly important not only for the design of turbo-machines but also for comparison of theoretical results obtained under the assumption of an unbounded stream with data resulting from channel flow experiments. The present study deals in particular with the change of the upstream decay rate of the pressure disturbances due to the effect of wave reflections within the channel and the change of the pressure level in this region.

Download or read book Transonic Shock Turbulent Boundary Layer Interactions on Spinning Axisymmetric Bodies at Zero Angle of Attack written by George R. Inger and published by . This book was released on 1983 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a detailed triple-deck theory of the transonic shock-nonseparating turbulent boundary layer interaction zones on spinning axisymmetric bodies at zero angle of attack. The theory allows a general non-equilibrium turbulent boundary layer history upstream of the interaction. We further describe the application of this theory as a local interactive module imbedded in a global composite viscous-inviscid transonic flow field prediction method which can handle two or more such interaction zones. Detailed comparisons with both experimental data and thin-layer Navier-Stokes code predictions are presented to verify the accuracy and reliability of the composite method solutions for pressure, displacement thickness, velocity profiles, shape factor and skin friction distirbutions along the body over a wide range of Mach/Reynolds number conditions. (Author).

Download or read book Transonic Shock Turbulent Boundary Layer Interaction with Suction and Blowing written by G. R. Inger and published by . This book was released on 1977 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A basic theory of weak normal shock - turbulent boundary layer interactions is given for two-dimensional non-separating flows including mass transfer across the wall throughout the interaction region. Even small amounts of suction are found to significantly reduce both the streamwise scale and thickening effect of the interaction and delay the onset of separation. This is shown to be a consequence of the large mass transfer effect on the shape of the incoming boundary layer Mach number profile away from the wall. Parametric study results showing the influence of Reynolds and shock Mach number as well as mass transfer parameter on the interaction, plus favorable comparisons with various experimental data, are also presented.

Download or read book Shock Boundary Layer Interaction Effects in Transonic Flow Fields written by G. R. Inger and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a five-year basic theoretical study of non-separating transonic shock-turbulent boundary layer interactions. Both local and downstream boundary layer distortion effects have been studied including extensive comparisons with available experimental data. (Author).

Download or read book Analysis of Imbedded Transonic Shock Wave Influence on Turbulent Boundary Layer Separation written by J. E. Carter and published by . This book was released on 1982 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: A strong viscous-inviscid interaction model has been developed for predicting the detailed properties of the flow in the vicinity of an imbedded transonic shock wave interacting with a turbulent boundary layer in cases where the shock wave is of sufficient strength to result in flow separation. In this interaction model the inviscid flow is analyzed with a compressible stream function analysis specifically developed for mixed subsonic-supersonic flow regions. In the present effort this analysis has been extended to include upstream vorticity effects and the boundary-layer displacement effects. Numerous calculations are presented which demonstrates the capability of this analysis to predict transonic rotational flow. The viscous analysis in this interaction model is a newly developed inverse boundary-layer analysis which accounts for normal pressure gradients and imbedded shock waves. The equations are solved with a coupled implicit finite-difference scheme subject to the condition that the flow at the edge of viscous layer merges asymptotically with the outer inviscid flow. A model problem has been analyzed with this generalized inverse boundary-layer procedure and no stability problems were encountered.