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Sunday, August 2, 2020 | History

3 edition of Vortex boundary-layer interactions, data report found in the catalog.

Vortex boundary-layer interactions, data report

Vortex boundary-layer interactions, data report

semiannual status report on research grant no. NAGW-581, period 1 March 1985 - 31 August 1985

  • 18 Want to read
  • 37 Currently reading

Published by Imperial College of Science and Technology, Department of Technology, For sale by the National Technical Information Service in London, [Springfield, Va .
Written in English

    Subjects:
  • Vortex-motion.,
  • Boundary layer control.

  • Edition Notes

    Other titlesVortex boundary layer interactions.
    StatementP. Bradshaw, principal investigator.
    SeriesNASA contractor report -- NASA CR-181462.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18069354M

      Experiments on vortex shedding from a blunt trailing edge symmetric hydrofoil operating at zero angle of attack in a uniform high speed flow, Re h = 1 10 6 10 3 ⁠, where the reference length h is the trailing edge thickness, are reported. The effects of a tripped turbulent boundary layer on the wake characteristics are analyzed and compared with the Cited by:   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 .

    Summary. Extensive measurements of mean and fluctuating quantities have been made in merging, two-dimensional, viscous layers. These measurements cover the interactions of wakes shed by aerofoils of various shapes with boundary layers growing in Cited by: A new edition of the almost legendary textbook by Schlichting completely revised by Klaus Gersten is now available. This book presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with emphasis on the flow past bodies (e.g. aircraft aerodynamics)/5.

    This article presents the computation of a set of control parameters for the deterministic prediction of laminar boundary-layer instabilities induced by an imposed unsteady shock interaction. The objective of the study is exploratory in nature by computing a supersonic flight environment for flow over a blunt body and the deterministic prediction of the spectral entropy rates for the Cited by: 2. Boundary Layer Flow Control by an Array of Ramp-Shaped Vortex Generators [NASA Technical Reports Server (NTRS)] on *FREE* shipping on qualifying offers. Flow field survey results for the effect of ramp-shaped vortex generators (VG) on a turbulent boundary layer are presented. The experiments are carried out in a low-speed wind tunnel and the data are .


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Vortex boundary-layer interactions, data report Download PDF EPUB FB2

Get this from a library. Vortex boundary-layer interactions, data report: semiannual status report on research grant no. NAGW, period 1 March August [P Bradshaw; United States.

National Aeronautics and Space Administration.]. Get this from a library. Vortex/boundary-layer interactions, data report: final report on NASA grant NAGw [A D Cutler; P Bradshaw; United States.

National Aeronautics and. Vortex generators (VGs) -which include ramps, vanes, split-ramps among other devices -are one such class of data report book which have been studied for use. Andrew D Cutler Faculty Member Positions.

Professor of Engineering and Applied Science, Department of Mechanical & Aerospace Engineering, School of Engineering and Applied Science - Associate Professor, Department of Mechanical & Aerospace Engineering, School of Engineering and Applied Science - Occupation: Assistant Research Professor.

In the boundary layer, we expect a behavior of the flow such as u+=y+, which means a linear growing rate in y+ for the scaled velocity u+, so you don't need so many mesh layers to reproduce a. IKTERACTION BETWEEN A VORTEX AND A TURBULENT BOUNDARY LAYER -- PART 1: MEAN FLOW EVOLUTION AND TURBULENCE PROPERTIES Russell V.

Westphal, Wayne R. Pauley,' and John K. Eaton' Ames Research Center 1. SUMMARY The weakly three-dimensional (3-D) turbulent flow resulting from an interaction between.

In physics and fluid mechanics, a boundary layer is the layer of fluid in the immediate vicinity of a bounding surface where the effects of viscosity are significant. As the fluid moves past the object, the molecules right next to the surface stic.

Vortex organization in the outer region of the turbulent boundary layer - Volume - R. ADRIAN, C. MEINHART, C. TOMKINSCited by: Laboratory. This report describes the experimental research program which provides basic knowledge and establishes new data on heat transfer in swept shock wave/boundary-layer interactions.

An equilibrium turbulent boundary-layer on a flat plate is subjected to impingement by swept planar shock waves generated by a sharp Size: 1MB. @article{osti_, title = {THE BOUNDARY LAYER OF A CONDUCTING VORTEX FLOW OVER A DISK WITH AN AXIAL MAGNETIC FIELD}, author = {Lewellen, W.S. and King, W.S.}, abstractNote = {The interaction of the boundary layer, produced by the vortical flow of a viscous, incompressible, electrically conducting fluid over a stationary disk, with a magnetic field that is.

Duriez T., Thiria B., Cambonie T., Wesfreid J.E., Aider J.L. () Interactions between vortex generators and a flat plate boundary layer. Application to the control of separated flows. In: Eckhardt B.

(eds) Advances in Turbulence XII. Springer Proceedings in Physics, vol Springer, Berlin, Heidelberg. First Online 05 October Author: T. Duriez, B. Thiria, T. Cambonie, J. Wesfreid, J. Aider. An in-depth review of boundary-layer flow-separation control by a passive method using low-profile vortex generators is presented.

The generators are defined as those with a device height between 10% and 50% of the boundary-layer by: 1. Introduction. Shock-wave boundary layer interactions (SBLI) occur in all practical transonic, supersonic and hypersonic one of the earliest reviews on the subject, Green identifies four important situations: transonic aerofoils, high-speed inlets, nozzles at off-design conditions, and near control flaps.

This paper examines the last three, where typically the boundary layer Cited by: boundary layer is very thin, and the fluid particles move in parallel planes which do not interact with each other (Anderson, ).

As the flow travels further in the horizontal direction, the boundary layer grows and if the flow travels along a long enough plate, the boundary layer will transition become turbulent. @article{osti_, title = {Vortex element methods for fluid dynamic analysis of engineering systems}, author = {Lewis, R I}, abstractNote = {This book consists of two parts (a total of 12 chapters), an appendix (17 computer programs), a bibliography, and an index.

Part one, entitled: The surface vorticity method for inviscid ideal flow, is comprised of six chapters: The basis of. Shock Wave-Boundary-Layer Interactions - Ebook written by Holger Babinsky, John K. Harvey. Read this book using Google Play Books app on your PC, android, iOS devices.

Download for offline reading, highlight, bookmark or take notes while you read Shock Wave-Boundary-Layer Interactions. Flow sep- aration and secondary vortex formation occur for Re > For Re >Walker, et al, have diffi- culties producing laminar vortex rings. They also perform boundary-layer calculations which once again show explosive growth of the boundary layer, but fail to predict the formation of secondary and tertiary vortices.

Analysis of unsteady effects in shock/boundary layer interactions By S. Pirozzoli†, J. Larsson, J. Nichols, M. Bernardini†, B. Morgan AND S. Lele The dynamics of interactions between impinging shock waves and turbulent boundary layers in supersonic flow is analyzed by mining a LES database developed for several.

The horseshoe vortex system in the end-wall region is mechanistically linked to the upstream boundary layer unsteadiness. Hairpin vortex packets, associated with turbulent boundary layer bursting behavior, amalgamate with the horseshoe vortex resulting in unsteady strengthening and streamwise by: Vortex boundary-layer interactions, data report [microform]: semiannual status report on research grant Vortex/boundary-layer interactions, data report [microform]: final report on NASA grant NAGw / A.D.

Semi-annual status report on research grant no. NAGW Vortex boundary-layer interactions, period 1 Ma. boundary layer. In practise, it is still difficult to measure the velocity profiles within the boundary layer. The present study will compare results from the theory of boundary layers with the results from experiments in the most simple setting; a flat plate at zero degrees of incidence at modest Reynolds numbers.

In the wind tunnel of the.- Shock Wave Boundary-Layer Interactions Edited by Holger Babinsky and John K. Harvey Frontmatter More informatio n SHOCK WAVE–BOUNDARY-LAYER INTERACTIONS Shock wave–boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft.The accurate numerical simulation of shock wave / turbulent boundary layer interactions (SBLIs) remains one of the more challenging problems in computational fluid dynamics.

Such interactions induce high fluctuating pressure and heat transfer loads and can cause flow separation that can lead to aircraft inlet unstart.