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A Three Dimensional Single Roughness Element In A Turbulent Boundary Layer
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Book Synopsis A Three-dimensional Single Roughness Element in a Turbulent Boundary Layer by : Henry W. Tieleman
Download or read book A Three-dimensional Single Roughness Element in a Turbulent Boundary Layer written by Henry W. Tieleman and published by . This book was released on 1965 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the influence of a single roughness element (sphere) in a turbulent boundary layer of a smooth flat plate is reported. The pressure distribution around the surface of the sphere was measured. Integration of the pressure distribution was used to compute the drag and lift forces on the element. Measurements of the mean and turbulent velocity distributions in the boundary-layer behind the sphere were made. (Author).
Book Synopsis Interaction of a Three-Dimensional Roughness Element with a Laminar Boundary Layer by : P. S. Klebanoff
Download or read book Interaction of a Three-Dimensional Roughness Element with a Laminar Boundary Layer written by P. S. Klebanoff and published by . This book was released on 1987 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation is described that is directed toward extending the technical database and furthering our understanding of boundary layer transition induced by three-dimensional roughness elements. The investigation was carried out in an unsteady wind tunnel, principally with hemispherical roughness elements, in a well characterized zero-pressure gradient laminar boundary layer on a flat plate. Attention was directed toward the following aspects of the behavior of a three dimensional roughness element: (1) the critical Reynolds number of transition and the effect of aspect ratio thereon, (2) eddy generation is steady and unsteady flows, (3) is the fundamental process stability governed, and (4) the evolutionary change in mean velocity and intensity of the velocity fluctuation associated with the transition to fully developed turbulent flow.
Book Synopsis Three-dimensional Turbulent Boundary-layer Flow on Roughness Strip of Finite Width by : Walter H. Edling
Download or read book Three-dimensional Turbulent Boundary-layer Flow on Roughness Strip of Finite Width written by Walter H. Edling and published by . This book was released on 1976 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Distributed Three-dimensional Roughness and Surface Cooling on Boundary-layer Transition and Lateral Spread of Turbulence at Supersonic Speeds by : Albert L. Braslow
Download or read book Effect of Distributed Three-dimensional Roughness and Surface Cooling on Boundary-layer Transition and Lateral Spread of Turbulence at Supersonic Speeds written by Albert L. Braslow and published by . This book was released on 1959 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Effects of Roughness, Surface Cooling, and Shock Impingement on Boundary-layer Transition on a Two-dimensional Wing by : K. R. Czarnecki
Download or read book Investigation of Effects of Roughness, Surface Cooling, and Shock Impingement on Boundary-layer Transition on a Two-dimensional Wing written by K. R. Czarnecki and published by . This book was released on 1960 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Turbulent Boundary Layers by : O. Sendstad
Download or read book Three-dimensional Turbulent Boundary Layers written by O. Sendstad and published by . This book was released on 1992 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Final Report on Three-dimensional Structure of Transitional Boundary Layers by : William S. Saric
Download or read book A Final Report on Three-dimensional Structure of Transitional Boundary Layers written by William S. Saric and published by . This book was released on 1990 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Roughness on Three-Dimensional Turbulent Boundary Layer by : P. A. Krogstad
Download or read book Effect of Roughness on Three-Dimensional Turbulent Boundary Layer written by P. A. Krogstad and published by . This book was released on 1982 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper describes a three-dimensional boundary-layer experiment on a rough surface. The data obtained are compared to a reference experiment having the same geometry and flow conditions but with a smooth surface. The boundary layer date are compared using scaling criteria developed from two-dimensional flows. It is found that the results, in terms of scaled variables, agree well in regions where pressure gradients are the dominant cause of three-dimensionality. In regions where shear stresses are more important, significant deviations in profile characteristics appear. A possible interpretation is that the degree of anisotropy is greater in three-dimensional rough boundary-layer flows than in the corresponding smooth-wall case. (Author).
Book Synopsis Three-dimensional Turbulent Boundary Layer Flow on Roughness Strip of Finite Width by : Walter H. Edling
Download or read book Three-dimensional Turbulent Boundary Layer Flow on Roughness Strip of Finite Width written by Walter H. Edling and published by . This book was released on 1974 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Described are the results of an experimental study of a well developed, turbulent boundary layer on a smooth, flat surface encountering an area of much rougher surface. The roughened area is a strip with its length extending in the direction of the mean flow but of finite width in the surface direction normal to the flow. The resulting three-dimensional flow is found to differ significantly from previously studied cases involving step changes in roughness of infinite extent in the direction normal to the flow. Extensive experiments are reported in a wind tunnel having a length of nearly 100 ft with a boundary layer thickness of the order of 18-20 in. Pitot tube and hot-wire anemometer measurements were made of mean velocity and Reynolds stress quantities throughout the flow field. Secondary flow components were measured by a new x-wire technique. (Modified author abstract).
Book Synopsis Effects of Unit Reynolds Number, Nose Bluntness, and Roughness on Boundary Layer Transition by : J. Leith Potter
Download or read book Effects of Unit Reynolds Number, Nose Bluntness, and Roughness on Boundary Layer Transition written by J. Leith Potter and published by . This book was released on 1960 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Condtions encountered in the high Mach number flow regime are show to profoundly affect the longitudinal extent of the boundary layer from beginning to end of transition, the distribution of fluctuation energy in the laminar layer, and effectiveness of surface roughness in promoting transition. A critical layer of intense local energy fluctuations was found at all Mach numbers studied. The existence of such a critical layer is predicted by stability theory. Hot-wire surveys of the laminar, transitional, and turbulent boundary layers are presented to illustrate the critical layer in laminar flow and subsequent development into the transition process. The relation between boundary layer transition on flat plates and cones in supersonic flow is explored and a process for correcting data to account for leading edge bluntness is devised. On the basis of a comparison of data corrected for the effects of leading edge geometry, it is shown that the Reynolds umber of transition on a cone is three times that on a vanishingly thin flate plate. Close agreement between data from various wind tunnels is demonstrated. Study of the effect of finite leading edges yields significant illustrations of the influence of unit Reynolds number on boundary layer transition. A correlation of the effects of surface roughness on transition is achieved. This treatment includes two- and three-dimensional roughness in both subsonic and supersonic streams. At this time only zero pressure gradients have been studied. The entire range of movement of transition from its position with no roughness up to its reaching the roughness element is describable by the procedure give. Examples of application of the correlation results show excellent agreement with experimental data from a variety of sources. Implications concerning tripping hypersonic boundary layers are discussed.
Book Synopsis Three-dimensional Turbulent Boundary Layer by : Frederick Stephen Abraham Pavamani
Download or read book Three-dimensional Turbulent Boundary Layer written by Frederick Stephen Abraham Pavamani and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Roughness Effects on Boundary-layer Transition for Blunt-leading-edge Plates at Mach 6 by : Paul F. Holloway
Download or read book Roughness Effects on Boundary-layer Transition for Blunt-leading-edge Plates at Mach 6 written by Paul F. Holloway and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effects of Steady, Three-dimensional Perturbations in Boundary Layers by : Raymond Sedney
Download or read book The Effects of Steady, Three-dimensional Perturbations in Boundary Layers written by Raymond Sedney and published by . This book was released on 1974 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary purpose of this report is to survey the available information mainly experimental, on the subject. Most attention is given to the complex flow field resulting when a 3-D protuberance is introduced into a laminar boundary layer; less can be said about the turbulent case or 2-D protuberances because enough detailed, careful experiments have not been made. There are some features of the induced flow fields common to all speed ranges; applications range from flow in the atmospheric boundary layer to hypersonic vehicle problems. Some attempts to analyze the downstream flow are also summarized.
Book Synopsis Numerical Study of a Three-dimensional Turbulent Boundary Layer by : Parviz Moin
Download or read book Numerical Study of a Three-dimensional Turbulent Boundary Layer written by Parviz Moin and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Three-dimensional Turbulent Boundary Layer Undergoing Transverse Strain and Streamwise Pressure Gradient by :
Download or read book A Three-dimensional Turbulent Boundary Layer Undergoing Transverse Strain and Streamwise Pressure Gradient written by and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Studies in Three-dimensional Turbulent Boundary Layers by : J. P. Johnston
Download or read book Experimental Studies in Three-dimensional Turbulent Boundary Layers written by J. P. Johnston and published by . This book was released on 1976 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The various methods for measurement of the six components of the turbulence stress tensor are reviewed, and some of the data on the turbulent shear stress vector are presented to demonstrate the validity of current ideas for.
Book Synopsis Experiment and Modelling of a Three-dimensional Turbulent Boundary Layer in a 30 Degree Bend by : Walter Ronald Schwarz
Download or read book Experiment and Modelling of a Three-dimensional Turbulent Boundary Layer in a 30 Degree Bend written by Walter Ronald Schwarz and published by . This book was released on 1992 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
