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Investigation Of Boundary Layer Reynolds Number For Transition On An Naca 65215 114 Airfoil In The Langley Two Dimensional Low Turbulence Pressure Tunnel
Download Investigation Of Boundary Layer Reynolds Number For Transition On An Naca 65215 114 Airfoil In The Langley Two Dimensional Low Turbulence Pressure Tunnel full books in PDF, epub, and Kindle. Read online Investigation Of Boundary Layer Reynolds Number For Transition On An Naca 65215 114 Airfoil In The Langley Two Dimensional Low Turbulence Pressure Tunnel ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Investigation of Boundary-layer Reynolds Number for Transition on an NACA 65(215)-114 Airfoil in the Langley Two-dimensional Low-turbulence Pressure Tunnel by : Albert L. Braslow
Download or read book Investigation of Boundary-layer Reynolds Number for Transition on an NACA 65(215)-114 Airfoil in the Langley Two-dimensional Low-turbulence Pressure Tunnel written by Albert L. Braslow and published by . This book was released on 1948 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wind-tunnel investigation was made of an NACA 65(215)-114 airfoil to determine the magnitude of the boundary-layer Reynolds number at various positions of transition from laminar to turbulent flow.
Book Synopsis The Boundary-layer Transition Characteristics of Two Bodies of Revolution, a Flat Plate, and an Unswept Wing in a Low-turbulence Wind Tunnel by : Frederick W. Boltz
Download or read book The Boundary-layer Transition Characteristics of Two Bodies of Revolution, a Flat Plate, and an Unswept Wing in a Low-turbulence Wind Tunnel written by Frederick W. Boltz and published by . This book was released on 1960 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Specific Types of Surface Roughness on Boundary-layer Transition by : Laurence K. Loftin
Download or read book Effects of Specific Types of Surface Roughness on Boundary-layer Transition written by Laurence K. Loftin and published by . This book was released on 1946 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Tests were conducted with two typical low-drag airfoils of 90-inch chord to determine the effects of surface projections, grooves, and sanding scratches on boundary-layer transition. The Reynolds number at which a spanwise row of cylindrical projections would cause premature transition was determined for a range of Reynolds number from approximately 3 x 106 to 10 x 106. Data were obtained for projections of various sizes and chordwise locations on both low-drag airfoils. The results were analyzed on the assumption that the critical airfoil Reynolds number for a given projection was a function only of the local-flow conditions around the projection. This assumption neglected possible effects of tunnel turbulence, pressure gradient, boundary-layer Reynolds number, and the original extent of the laminar flow. The data correlated on the basis of this assumption within a range of critical airfoil Reynolds number of ±0.5 x 106 and within a range of projection height of ±0.002 inch. The tests of surface grooves and sanding scratches indicated that, for the range of Reynolds number investigated, the laminar boundary layer was much less sensitive to surface grooves and sanding scratches than to projections above the surface.
Book Synopsis Laminar Flow Aircraft Certification by :
Download or read book Laminar Flow Aircraft Certification written by and published by . This book was released on 1986 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Boundary-layer Transition on X-15-2 Research Airplane by : Albert L. Braslow
Download or read book Analysis of Boundary-layer Transition on X-15-2 Research Airplane written by Albert L. Braslow and published by . This book was released on 1966 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Surface Static-pressure Orifices on Boundary-layer Transition by : Dan M. Somers
Download or read book Influence of Surface Static-pressure Orifices on Boundary-layer Transition written by Dan M. Somers and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preliminary Study of Effects of Reynolds Number and Boundary-layer Transition Location on Shock-induced Separation by : James A. Blackwell (Jr.)
Download or read book Preliminary Study of Effects of Reynolds Number and Boundary-layer Transition Location on Shock-induced Separation written by James A. Blackwell (Jr.) and published by . This book was released on 1969 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Airfoil Boundary Layer and Turbulent Wake Development at Low Reynolds Numbers by : Serhiy Yarusevych
Download or read book Investigation of Airfoil Boundary Layer and Turbulent Wake Development at Low Reynolds Numbers written by Serhiy Yarusevych and published by . This book was released on 2006 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boundary layer and wake development on a NACA 0025 airfoil at low Reynolds numbers was studied experimentally via surface pressure measurements, hot-wire velocity measurements, and flow visualization. Wind tunnel experiments were carried out for a range of Reynolds numbers and three angles of attack. In addition, flow control with periodic excitations was investigated and a shear layer stability analysis was performed. Two boundary layer flow regimes were identified: (1) boundary layer separation without reattachment and (2) separation bubble formation. The results have demonstrated that transition to turbulence, which occurs due to the amplification of disturbances in the separated shear layer, plays a key role in boundary layer reattachment. Once disturbances reach sufficient amplitude, shear layer roll-up occurs and the resulting vortices are shed at a fundamental frequency. The roll-up process is attributed to the Kelvin-Helmholtz instability, and the salient characteristics of the roll-up vortices can be adequately estimated by means of inviscid linear stability analysis. The final stage of transition is associated with the growth of a sub-harmonic component in the velocity spectrum, which can be attributed to the merging of the roll-up vortices. Wake vortices form in the near-wake region and are shed alternatively on the upper and lower sides of the turbulent wake. Each of the two identified flow regimes is associated with distinctly different characteristics of both the roll-up and wake vortices. It has been established that the fundamental frequency of the shear-layer disturbances exhibits a power law dependency on the Reynolds number, whereas the wake vortex shedding frequency displays a linear dependency on the Reynolds number. A universal scaling for the wake vortex shedding frequency has been determined, which has a universal Strouhal number of 0.17. The results provide added insight into flow control with external acoustic excitation. It is concluded that matching the excitation frequency with the frequency of the most amplified disturbance in the separated shear layer is the optimum method for controlling airfoil performance. Two threshold levels for excitation amplitude have been identified: (i) a minimum effective amplitude that is linked to the background noise level and (ii) a maximum efficient amplitude.
Book Synopsis High Reynolds Number Test of a NACA 651-213, a Equals 0.5 Airfoil at Transonic Speeds by :
Download or read book High Reynolds Number Test of a NACA 651-213, a Equals 0.5 Airfoil at Transonic Speeds written by and published by . This book was released on 1975 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Viscous Drag Reduction in Boundary Layers by :
Download or read book Viscous Drag Reduction in Boundary Layers written by and published by AIAA. This book was released on 1990 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Reynolds Number Tests of a Douglas DLBA 032 Airfoil in the Langley 0.3-meter Transonic Cryogenic Tunnel by :
Download or read book High Reynolds Number Tests of a Douglas DLBA 032 Airfoil in the Langley 0.3-meter Transonic Cryogenic Tunnel written by and published by . This book was released on 1986 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Variation of Lift Coefficient with Reynolds Number at a Moderate Angle of Attack on a Low-drag Airfoil by : Albert E. Von Doenhoff
Download or read book Investigation of the Variation of Lift Coefficient with Reynolds Number at a Moderate Angle of Attack on a Low-drag Airfoil written by Albert E. Von Doenhoff and published by . This book was released on 1942 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the boundary layer about the NACA 66,2-216, a = 0.6, airfoil section has been made in the NACA two-dimensional low-turbulence tunnel, in an attempt to find an explanation for the decreased slot of the lift curve observed for some of the low-drag sections outside the low-drag range at low Reynolds numbers. It was found that the effect was probably associated with the formation of a small local region of separated flow near the leading edge, which decreased in size as the Reynolds number increased.
Book Synopsis Proceedings of [the] Low-speed Boundary-layer Transition Workshop: II by : Rand Corporation
Download or read book Proceedings of [the] Low-speed Boundary-layer Transition Workshop: II written by Rand Corporation and published by . This book was released on 1978 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major subject areas discussed include: Numerical Investigations of Navier-Stokes Equation; Transition and Stability Theory; Predictions of Transition by Model Equations; The Effects of Free Stream Disturbances and Surface Roughness on Transition; Experimental Investigations of Transition; and The Design and Parametric Studies of Laminar Flow Bodies.
Book Synopsis A High Reynolds Number Test of a NACA 651-213 by : Kenneth P. Burdges
Download or read book A High Reynolds Number Test of a NACA 651-213 written by Kenneth P. Burdges and published by . This book was released on 1975 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charts for Estimating Boundary-layer Transition on Flat Plates by : Edward J. Hopkins
Download or read book Charts for Estimating Boundary-layer Transition on Flat Plates written by Edward J. Hopkins and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research in Natural Laminar Flow and Laminar-Flow Control, Part 3 by :
Download or read book Research in Natural Laminar Flow and Laminar-Flow Control, Part 3 written by and published by . This book was released on 1987 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Airfoil Measurements in the DVL High-speed Wind Tunnel (2.7-meter Diameter) by : B. Göthert
Download or read book Airfoil Measurements in the DVL High-speed Wind Tunnel (2.7-meter Diameter) written by B. Göthert and published by . This book was released on 1949 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Report is a brief summary of investigations on symmetrical and cambered airfoils in the DVL high-speed tunnel. Some information on the effects of low aspect ratio are also included.
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