Bypass-Transition Research: Issues and Philosophy

The genesis of wall turbulence in open-flow systems generally starts with slightly perturbed quasi-two-dimensional, quasi-steady laminar wall layers, quasi-homogeneous in the streamwise x- and spanwise z-directions. A primary instability brings about a quasi-periodic vorticity structure in one spatial direction. At least one secondary instability of the (near) saturated primary vortical structures must then take place to prepare the stage for the unsteady , x- and z-nonhomogeneous vorticity structures observed in wall turbulence.

[1]  D. Henningson,et al.  On the Evolution of Localized Disturbances in Laminar Shear Flows , 1990 .

[2]  I. Grant,et al.  An experimental investigation of the formation and development of a wave packet in a laminar boundary layer , 1975, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[3]  Kenneth Samuel Breuer,et al.  The development of a localized disturbance in a boundary layer , 1988 .

[4]  J. Kendall,et al.  Experimental study of disturbances produced in a pre-transitional laminar boundary layer by weak freestream turbulence , 1985 .

[5]  G. B. Schubauer,et al.  Laminar-boundary-layer oscillations and transition on a flat plate , 1947 .

[6]  R. G. Voigt,et al.  Instability and Transition , 1990 .

[7]  F. Chambers,et al.  Turbulent spots, wave packets, and growth , 1983 .

[8]  H. L. Grant,et al.  The inhomogeneity of grid turbulence , 1957, Journal of Fluid Mechanics.

[9]  Kenneth S. Breuer,et al.  The Evolution of a Localized Disturbance in a Laminar Boundary Layer , 1990 .

[10]  Leonhard Kleiser,et al.  Numerical simulation of transition in wall-bounded shear flows , 1991 .

[11]  Mark V. Morkovin.  Panoramic view of changes in vorticity distribution in transition instabilities and turbulence , 1991 .

[12]  J. Kendall.  Boundary layer receptivity to freestream turbulence , 1990 .

[13]  M. Landahl.  A note on an algebraic instability of inviscid parallel shear flows , 1980, Journal of Fluid Mechanics.

[14]  M. V. Dyke,et al.  An Album of Fluid Motion , 1982 .

[15]  Philip Hall,et al.  The linear development of Görtler vortices in growing boundary layers , 1983, Journal of Fluid Mechanics.

[16]  Valdis Kibens,et al.  Large-scale motion in the intermittent region of a turbulent boundary layer , 1970, Journal of Fluid Mechanics.

[17]  M. V. Morkovin,et al.  Dialogue on Progress and Issues in Stability and Transition Research , 1990 .

[18]  M. V. Morkovin,et al.  Boundary-layer receptivity to unsteady pressure gradients: experiments and overview , 1986, Journal of Fluid Mechanics.

[19]  G. B. Schubauer,et al.  Contributions on the Mechanics of Boundary-Layer Transition , 1955 .

[20]  James M. Kendall,et al.  Studies on laminar boundary-layer receptivity to freestream turbulence near a leading edge , 1991 .

[21]  P S Klebanoff,et al.  MECHANISM BY WHICH A TWO-DIMENSIONAL ROUGHNESS ELEMENT INDUCES BOUNDARY-LAYER TRANSITION: ROUGHNESS INDUCED TRANSITION , 1972 .

[22]  S. K. Robinson,et al.  Coherent Motions in the Turbulent Boundary Layer , 1991 .

[23]  Stephen P. Wilkinson,et al.  Stability experiments in the flow over a rotating disk , 1985 .

[24]  G. B. Schubauer,et al.  Laminar Boundary-Layer Oscillations and Stability of Laminar Flow , 1947 .

[25]  Roddam Narasimha,et al.  Relaminarization of fluid flows , 1979 .

[26]  P. Moin,et al.  Direct numerical simulation of transition and turbulence in a spatially evolving boundary layer , 1991 .

[27]  Mark V. Morkovin,et al.  On Roughness — Induced Transition: Facts, Views, and Speculations , 1990 .

[28]  A. Glezer,et al.  On the breakdown of the wave packet trailing a turbulent spot in a laminar boundary layer , 1989, Journal of Fluid Mechanics.

[29]  T. Mueller,et al.  Experimental Studies of Separation on a Two-Dimensional Airfoil at Low Reynolds Numbers , 1982 .

[30]  E. Reshotko,et al.  Preliminary Experimental Study of Disturbances in a Laminar Boundary- Layer due to Distributed Surface Roughness , 1981 .

[31]  V. Kosorygin,et al.  Laminar Boundary Layers in Turbulent Flows , 1990 .

[32]  S. M. Batill,et al.  Experimental studies of the laminar separation bubble on a two-dimensional airfoil at low Reynolds numbers , 1980 .

[33]  L. Fletcher.  Aerodynamic Heating and Thermal Protection Systems , 1978 .

[34]  M. V. Morkovin,et al.  Experiments on transition enhancement by distributed roughness , 1986 .