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Saturday, July 18, 2020 | History

3 edition of Numerical simulation of boundary-layer transition found in the catalog.

Numerical simulation of boundary-layer transition

Numerical simulation of boundary-layer transition

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  • 3 Currently reading

Published by National Aeronautics and Space Administration, Ames Research Center in Moffett Field, Calif .
Written in English

    Subjects:
  • Boundary layer.,
  • Aerodynamics.

  • Edition Notes

    StatementP.R. Spalart.
    SeriesNASA technical memorandum -- 85984.
    ContributionsAmes Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17801836M

    Spalart, P.R. Direct numerical simulation of a turbulent boundary layer up to Re θ = J. Fluid Mech. , , 61– [Google Scholar] Wu, X.; Moin, P. Direct numerical simulation of turbulence in a nominally zero-pressure-gradient flat-plate boundary layer. J. Fluid Mech. , , 5– [Google Scholar]Cited by: 2. Numerical Study on Randomization in Late Boundary Layer Transition Ping Lu1, Manoj Thapa2 and Chaoqun Liu3 University of Texas at Arlington, Arlington, Texas , USA [email protected] The mechanism of randomization in late boundary layer transition is a key issue of late boundary layer transition and turbulence : Ping Lu, Manoj Thapa, Chaoqun Liu.

    Numerical Simulation of the Control of the Three-Dimensional Transition Process in Boundary Layers.- On the Application of Large-Eddy Simulation to Transitional Wall-Bounded Flows.- Visualisation of Boundary Layer Transition This paper presents a numerical study of high wavenumber coherent structure evolution in boundary layer transition flow using recently-developed high order Combined compact difference schemes with non-uniform grids in the wall-normal direction for efficient simulation of such flows. The study focuses on a simulation of an Adverse-Pressure-Gradient (APG) boundary layer Cited by: 1.

    @article{osti_, title = {A method for the direct numerical simulation of hypersonic boundary-layer instability with finite-rate chemistry}, author = {Marxen, Olaf, E-mail: @ and Aeronautics and Aerospace Department, von Karman Institute for Fluid Dynamics, Chaussée de Waterloo, 72, Rhode-St-Genèse and Magin, Thierry E. . The transition of a laminar to turbulent boundary layer for a high speed vehicles plays an important role in their design due to comparatively higher heat flux and skin friction drag from a turbulent vs. laminar boundary by: 7.


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Numerical simulation of boundary-layer transition Download PDF EPUB FB2

PDF | OnP. Spalart and others published Numerical simulation of boundary-layer transition | Find, read and cite all the research you need on ResearchGateAuthor: Philippe Spalart. Get this from a library. Numerical simulation of boundary-layer transition.

[P R Spalart; Ames Research Center.]. from book Physics (pp) Direct Numerical Simulation of Boundary Layer Transition in Streamwise Corner-Flow. Direct numerical simulation of boundary layer. A study of instabilities in incompressible boundary-layer flow on a flat plate is conducted by spatial direct numerical simulation (DNS) of the Navier-Stokes equations.

Here, the DNS results are used to evaluate critically the results obtained using parabolized stability equations (PSE) theory and to study mechanisms associated with breakdown from laminar to Cited by: Konzelmann, U., Rist, U., and Fasel, H.

(), “Numerical investigation of the effects of longitudinal vortices on the onset of transition in a flat plate boundary layer,” Proc. AGARD Symp. on Fluid Dynamics of Three-Dimensional Turbulent Shear Flow and Transition, Cesme, : H.

Fasel. Numerical Simulations of the Boundary Layer Transition he Boundary Layer Transition (BLT) Flight Experiment1 was designed to validate turbulent Computational simulation is much smaller than the original baseline grid.

If the BLT protuberance calculations were computedCited by: The art of the seam bowler in cricket is also explainable by boundary-layer transition and separation. The idea is to align the seam at a small angle to the flight path (see Fig. ) by spinning the ball about an axis perpendicular to the plane of the seam and using gyroscopic inertia to stabilize the seam position during the the side of the front stagnation.

Direct numerical simulation of transition in supersonic boundary layers: oblique breakdown. In Transitional and Turbulent Compressible Flows - (pp.

(American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED; Vol. Cited by: Chaudhry, R. S., Subbareddy, P. K., Nompelis, I., & Candler, G. Direct numerical simulation of roughness-induced transition in the VKI mach 6 53rd AIAA Aerospace Sciences Meeting [AIAA ] (53rd AIAA Aerospace Sciences Meeting).American Institute of Aeronautics and Astronautics Inc, by: 3.

Add tags for "Numerical simulation of boundary layers. Part 2, Ribbon-induced transition in Blasius flow". Part 2, Ribbon-induced transition in Blasius flow". Be the first. Front Matter i–ii; Preface iii–vi; Table of Contents vii–xii; Welcoming Address 1; Opening Address 2; Keynote Lectures 3–4; Developing an Accurate and Efficient Method for Viscous Compressible Flow Simulations - An Example of CFD in Aeronautics 5–22; Boundary-Layer Stability and Transition 23–34; RNG Modeling Techniques for Complex Turbulent Flows 35–44; A Flood.

Transition stages in a boundary layer. The path from receptivity to laminar-turbulent transition as illustrated by Morkovin, A boundary layer can transition to turbulence through a number of paths. Which path is realized physically depends on the initial conditions such as initial disturbance amplitude and surface roughness.

The. Linear Stability of the Supersonic Turbulent Boundary Layer to Görtler Vortices on a Concave Wall.- Direct Numerical Simulation of Görtler Instability in Hypersonic Boundary Layers.- Effect of the Pressure Gradients on the Secondary Instability of Görtler Flow.- Laminar-Turbulent Transition of a Separation Flow on a Forward Facing Step.-Price: $   The present work is a numerical simulation of boundary layer transition occurring over a flat plate.

The numerical simulation was carried out using an open source tool namely OpenFOAM®. The Reynolds Averaged Navier Stokes Equations was solved along with a four equation turbulent closure which includes transition modeling.

Numerical Solution of Boundary Layer Equations T. Craft George Begg Building, C41 Contents: I Navier-Stokes equations I Inviscid o ws I Boundary layers I Transition, Reynolds averaging I Mixing-length models of turbulence I Turbulent kinetic energy equation I One- and Two-equation models I Flow management Reading: F.M.

White, Fluid MechanicsFile Size: KB. Effect of Unsteady Wake Passing Frequency on Boundary Layer Transition, Experimental Investigation, and Wavelet Analysis J. Fluids Eng (March, ) Direct Numerical Simulation of Flow and Heat Transfer From a Sphere in a Uniform Cross-FlowCited by: This volume represents the findings of the first test cases considered by ERCOFTAC.

The workshop, held in Lausanne, Switzerland, instudied five test cases: boundary layer in an S-shaped duct; periodic array of cylinders; transition in a boundary layer under the influence of free-stream turbulence; predictions of an axisymmetric jet flow in a diverging duct; and predictions Format: Hardcover.

Select Direct numerical simulation of transition in Mach boundary layers at flight conditions Book chapter Full text access Direct numerical simulation of transition in Mach boundary layers at flight conditions.

NUMERICAL SIMULATION OF BOUNDARY-LAYER TRANSITION June 6 Performing Organization Code 7 Author(s) 8 Performing Organization Report No P. Spa1art A 10 Work Unit No 9 Performing Organization Name and Address T Ames Research Center 11 Contract or Gra nt No Moffett Field, CA Thermann, Hans, Müller, Michael, and Niehuis, Reinhard.

"Numerical Simulation of the Boundary Layer Transition in Turbomachinery Flows." Proceedings of the ASME Turbo Expo Power for Land, Sea, and by:. In this post I go over the numerical solution to the compressible boundary layer equations.

This is very useful when a quick estimate of shear stress, wall heat flux, or boundary layer height if necessary. The sections of this post are: Introduction Compressibility transformation Using the general parabolic form Numerical solution using Crank-Nicolson Results and .Computational fluid dynamics; hypersonic flows, development of new very high-order numerical methods; numerical simulation of hypersonic boundary layer receptivity, stability, and transition; numerical simulation of real-gas hypersonic flow; development of high-order immersed interface method for flow simulations; DNS of strong shock interaction with turbulence; numerical Occupation: PROFESSOR.

Direct Numerical Simulations are performed to investigate transition initiated by a wave packet in a sharp cone boundary layer at Mach 6. In order to understand the natural transition process in hypersonic cone boundary layers, the flow was pulsed through a hole on the cone surface to generate a wave packet which consisted of a wide range of disturbance Cited by: