Crossflow Stability and Transition Experiments in Swept-Wing Flow

An experimental examination of crossflow instability and transition on a 45 degree swept wing was conducted in the Arizona State University Unsteady Wind Tunnel. The stationary-vortex pattern and transition location are visualized by using both sublimating chemical and liquid-crystal coatings. Extensive hot-wire measurements were obtained at several measurement stations across a single vortex track. The mean and travelling wave disturbances were measured simultaneously. Stationary crossflow disturbance profiles were determined by subtracting either a reference or a span-averaged velocity profile from the mean velocity data. Mean, stationary crossflow, and travelling wave velocity data were presented as local boundary layer profiles and contour plots across a single stationary crossflow vortex track. Disturbance mode profiles and growth rates were determined. The experimental data are compared with predictions from linear stability theory.

[1]  Helen L. Reed,et al.  Stability of Three-Dimensional Boundary Layers , 1987 .

[2]  W. Pfenninger,et al.  ABOUT THE DEVELOPMENT OF SWEPT LAMINAR SUCTION WINGS WITH FULL CHORD LAMINAR FLOW , 1961 .

[3]  H. Reed,et al.  Stability of three‐dimensional supersonic boundary layers , 1991 .

[4]  A. Nayfeh.  Stability of Three-Dimensional Boundary Layers , 1979 .

[5]  K. Kaups,et al.  Compressible Laminar Boundary Layers with Suction on Swept and Tapered Wings , 1977 .

[6]  J. Dagenhart,et al.  Amplified crossflow disturbances in the laminar boundary layer on swept wings with suction , 1981 .

[7]  H. Bippes,et al.  The Stability of a Three Dimensional Laminar Boundary Layer Over A Swept Flat Plate , 1990 .

[8]  K. H. Horstmann,et al.  Flight Tests with a Natural Laminar Flow Glove on a Transport Aircraft. , 1990 .

[9]  Eli Reshotko,et al.  Stability of the compressible laminar boundary layer , 1962, Journal of Fluid Mechanics.

[10]  M. Malik,et al.  Three-Dimensional Boundary Layer Stability and Transition , 1992 .

[11]  P. Hall,et al.  Concerning the interaction of non-stationary crossflow vortices in a three-dimensional boundary layer , 1991 .

[12]  H. Bippes,et al.  Instability and transition of a three‐dimensional boundary layer on a swept flat plate , 1988 .

[13]  M. Morkovin.  On the Many Faces of Transition , 1969 .

[14]  Kenneth F. Stetson,et al.  Hypersonic Boundary-Layer Transition , 1992 .

[15]  S. Lekoudis.  Resonant wave interactions on a swept wing , 1980 .

[16]  A. Srokowski,et al.  Mass flow requirements for LFC wing design , 1977 .

[17]  D. W. Bartlett,et al.  On the Stability of Swept Wing Laminar Boundary Layers Including Curvature Effects , 1990 .

[18]  H. L. Morgan,et al.  Mathematical model for two-dimensional multi-component airfoils in viscous flow. , 1972 .

[19]  William S. Saric,et al.  The ASU unsteady wind tunnel and fundamental requirements for freestream turbulence measurements , 1988 .

[20]  L. Mack,et al.  On the stability of the boundary layer on a transonic swept wing , 1979 .

[21]  H. Reed,et al.  Effect of curvature on stationary crossflow instability of a three-dimensional boundary layer , 1993 .

[22]  P. R. Spalart,et al.  Direct Numerical Study of Crossflow Instability , 1990 .

[23]  B. Müller.  Experimental Study of the Travelling Waves in a Three-Dimensional Boundary Layer , 1990 .

[24]  L. Mack,et al.  Computation of the stability of the laminar compressible boundary layer. , 1965 .

[25]  M. R. Malik,et al.  Efficient computation of the stability of three-dimensional compressible boundary layers , 1981 .

[26]  D. Arnal,et al.  Three-dimensional transition studies at ONERA/CERT , 1987 .

[27]  David S. Miller,et al.  Supersonic boundary-layer transition on the LaRC F-106 and the DFRF F-15 aircraft. Part 1: Transition measurements and stability analysis , 1987 .

[28]  Robert B. Yeaton,et al.  Boundary-layer stability analysis of NLF and LFC experimental data at subsonic and transonic speeds , 1987 .

[29]  L. Mack,et al.  Transition prediction and linear stability theory , 1977 .

[30]  N. Gregory,et al.  On the stability of three-dimensional boundary layers with application to the flow due to a rotating disk , 1955, Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences.

[31]  S. J. Kline,et al.  Describing Uncertainties in Single-Sample Experiments , 1953 .

[32]  William S. Saric,et al.  Experiments on the stability of crossflow vortices in swept-wing flows , 1985 .

[33]  T. Fischer,et al.  Primary and secondary stability analysis of a three‐dimensional boundary‐layer flow , 1991 .

[34]  N. El‐Hady.  Evolution of resonant wave triads in three-dimensional boundary layers , 1988 .

[35]  D V Maddalon,et al.  Transition Flight Experiments on a Swept Wing With Suction , 1989 .

[36]  D. J. Tritton,et al.  The Theory of Hydrodynamic Stability , 1977 .

[37]  M. R. Malik,et al.  Effect of curvature on three-dimensional boundary-layer stability , 1985 .

[38]  D. Reda.  Liquid crystals for unsteady surface shear stress visualization , 1988 .

[40]  L. Mack,et al.  Compressible Boundary-Layer Stability Calculations for Sweptback Wings with Suction , 1981 .

[41]  P. Balakumar,et al.  Stability of three-dimensional compressible boundary layers , 1999 .

[42]  D. Bushnell,et al.  Application of Stability Theory to Laminar Flow Control-Progress and Requirements , 1987 .

[43]  D. Poll.  The Effect of Isolated Roughness Elements on Transition in Attachment-Line Flows , 1990 .

[44]  L. Mack.  Boundary-Layer Linear Stability Theory , 1984 .

[45]  William S. Saric,et al.  The ASU Transition Research Facility , 1992 .

[46]  A. Nayfeh,et al.  Stability of compressible three-dimensional boundary-layer flows , 1982 .

[47]  H. Bippes,et al.  Instability Features Appearing on Swept Wing Configurations , 1990 .

[48]  W. Saric.  Low-Speed Experiments: Requirements for Stability Measurements , 1990 .

[49]  A. Smith,et al.  Determination of spatial amplification factors and their applicationto predicting transition , 1969 .

[50]  I. E. Beckwith,et al.  Experimental and theoretical investigation of boundary-layer instability mechanisms on a swept leading edge at Mach 3.5 , 1987 .

[51]  Frederick W. Boltz,et al.  Effects of Sweep Angle on the Boundary-Layer Stability Characteristics of an Untapered Wing at Low Speeds , 1960 .

[52]  W. Pfeminger.  Laminar flow control laminarization , 1977 .

[53]  Phillips,et al.  Design and test of an NLF wing glove for the variable-sweep transition flight experiment , 1987 .

[54]  E. Coustols,et al.  Experimental and Theoretical Studies of Boundary Layer Transition on a Swept Infinite Wing , 1985 .

[55]  D. I. A. Poll,et al.  Some observations of the transition process on the windward face of a long yawed cylinder , 1985, Journal of Fluid Mechanics.

[56]  Thorwald Herbert.  A Code for Linear Stability Analysis , 1990 .

[57]  S. A. Orszag,et al.  Mass flow requirements for LFC wing design. [Laminar Flow Control] , 1977 .

[58]  H. Reed,et al.  Stability of High-Speed Chemically Reacting and Three-Dimensional Boundary Layers , 1990 .

[59]  R. W. Barnwell,et al.  Natural laminar flow and laminar flow control , 1992 .

[60]  Roger A. Rozendaal,et al.  The 757 NLF glove flight test results , 1987 .

[61]  W. Saric,et al.  Experiments in Swept-Wing Transition , 1990 .

[62]  D. M. Bushnell,et al.  Application of stability theory to laminar flow control , 1979 .

[63]  A. Nayfeh,et al.  Nonparallel stability of three-dimensional flows , 1981 .

[64]  Yasuaki Kohama,et al.  BOUNDARY-LAYER TRANSITION ON A SWEPT CYLINDER , 1988 .

[65]  M. R. Malik,et al.  COSAL: A black-box compressible stability analysis code for transition prediction in three-dimensional boundary layers , 1982 .

[66]  W. Saric,et al.  Crossflow-vortex instability and transition on a 45 deg swept wing , 1989 .

[67]  William S. Saric,et al.  Experiments on Swept-Wing Boundary Layers , 1990 .

[68]  Lester Lees,et al.  The stability of the laminar boundary layer in a compressible fluid , 1946 .

[69]  P. Hall,et al.  Vortex Instabilities in 3D Boundary Layers: The Relationship between Gortler and Crossflow Vortices , 1990 .

[70]  D. Dunn,et al.  On the Stability of the Laminar Boundary Layer in a Compressible Fluid , 1953 .

[71]  N. M. El-Hady,et al.  On the stability of three-dimensional compressible nonparallel boundary layers , 1980 .

[72]  Three-dimensional stability of growing boundary layers , 1980 .

[73]  D. W. Bartlett,et al.  Correlation of Boundary Layer Stability Analysis with Flight Transition Data , 1990 .

[74]  C. J. Obara,et al.  Boundary-layer stability analysis of flight-measured transition data , 1990 .

[75]  Y. S. Kachanov,et al.  The Experimental Investigation of Stability and Receptivity of a Swept-Wing Flow , 1990 .

[76]  Daniel Arnal,et al.  Experimental and Theoretical Analysis of Natural Transition on “Infinite” Swept Wing , 1990 .

[77]  T. Fischer,et al.  Theoretical investigation of secondary instability of three-dimensional boundary-layer flows with application to the DFVLR-F5 model wing , 1987 .

[78]  Craig L. Streett,et al.  Boundary layer receptivity phenomena in three-dimensional and high-speed boundary layers , 1990 .

[79]  B. Müller,et al.  Measurements and stability calculations of the disturbance growth in an unstable three‐dimensional boundary layer , 1991 .

[80]  L. Mack.  Linear Stability Theory and the Problem of Supersonic Boundary- Layer Transition , 1975 .

[81]  Dan M. Somers,et al.  Subsonic Natural-Laminar-Flow Airfoils , 1992 .

[82]  E. Coustols,et al.  Laminar instability theory and transition criteria in two and three-dimensional flow , 1984 .

[83]  P. Hall,et al.  Vortex instabilities in three-dimensional boundary layers: the relationship between Görtler and crossflow vortices , 1991, Journal of Fluid Mechanics.

[84]  H. Reed.  Wave interactions in swept-wing flows , 1987 .

[85]  P. Hall,et al.  On the interaction of stationary crossflow vortices and Tollmien-Schlichting waves in the boundary layer on a rotating disc , 1990, Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences.

[86]  Dan M. Somers,et al.  A computer program for the design and analysis of low-speed airfoils, supplement , 1980 .

[87]  J. V. Ingen.  A suggested semi-empirical method for the calculation of the boundary layer transition region , 1956 .

[88]  T. Herbert.  Boundary-layer transition - Analysis and prediction revisited , 1991 .