Download or read book An Experimental Study of Transitional Boundary Layers on a Flat Plate written by Jagadish Buddhavarapu and published by . This book was released on 1984 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study on Transition in Boundary Layers written by B. R. Vasudeva and published by . This book was released on 1966 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laminar boundary layer on a flat plate with zero pressure gradient was excited by a solitary three dimensional disturbance. The growth of the disturbance was studied using a 10-channel linearized d.c.-coupled hot wire system. The development of the disturbance flow field was studied and compared with theory. The experimental results indicate a departure from the theory on account of the simplifying assumptions made in the theory. Certain new results were also obtained. (Author).
Download or read book Experimental Study of Boundary Layer Transition with Elevated Freestream Turbulence on a Heated Flat Plate written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-24 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed investigation to document momentum and thermal development of boundary layers undergoing natural transition on a heated flat plate was performed. Experimental results of both overall and conditionally sampled characteristics of laminar, transitional, and low Reynolds number turbulent boundary layers are presented. Measurements were acquired in a low-speed, closed-loop wind tunnel with a freestream velocity of 100 ft/s and zero pressure gradient over a range of freestream turbulence intensities (TI) from 0.4 to 6 percent. The distributions of skin friction, heat transfer rate and Reynolds shear stress were all consistent with previously published data. Reynolds analogy factors for R(sub theta) is less than 2300 were found to be well predicted by laminar and turbulent correlations which accounted for an unheated starting length. The measured laminar value of Reynolds analogy factor was as much as 53 percent higher than the Pr(sup -2/3). A small dependence of turbulent results on TI was observed. Conditional sampling performed in the transitional boundary layer indicated the existence of a near-wall drop in intermittency, pronounced at certain low intermittencies, which is consistent with the cross-sectional shape of turbulent spots observed by others. Non-turbulent intervals were observed to possess large magnitudes of near-wall unsteadiness and turbulent intervals had peak values as much as 50 percent higher than were measured at fully turbulent stations. Non-turbulent and turbulent profiles in transitional boundary layers cannot be simply treated as Blasius and fully turbulent profiles, respectively. The boundary layer spectra indicate predicted selective amplification of T-S waves for TI is approximately 0.4 percent. However, for TI is approximately 0.8 and 1.1 percent, T-S waves are localized very near the wall and do not play a dominant role in transition process. Sohn, Ki-Hyeon and Reshotko, Eli Unspecified Center NASA-CR-187068, NAS 1.26:187068 NAG3-...
Download or read book Experimental Study of Boundary Layer Transition with Elevated Freestream Turbulence on a Heated Flat Plate written by Ki-Hyeon Sohn and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of Boundary Layer Transition with Elevated Freestream Turbulence on a Heated Flat Plate written by Ki-Hyeon Sohn and published by . This book was released on 1991 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of the Intermittent Properties of the Boundary Layer Pressure Field During Transition on a Flat Plate written by Frederick Cragin DeMetz and published by . This book was released on 1973 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of the intermittent wall pressure field were measured in the transition boundary layer on a large flat plate in an anechoic wind tunnel. Natural transition was achieved with a mild favorable pressure gradient at Reynolds numbers, based on downstream distance from the plate's leading edge, in excess of 7,000,000. The development of the laminar boundary layer prior to transition was in agreement with numerical solutions to the laminar boundary layer equations and with stability criteria for pressure gradient effects. The temporal, spatial, and spectral properties of the transition wall pressure field associated with the natural transition process occurring on the plate are obtained as a function of the intermittency factor, and compared with those of the fully turbulent pressure field. Specifically, the mean-square pressure, spectral densities, convection velocities, distributions of burst periods and burst rates of the intermittent pressure field are computed from the data. (Author).
Download or read book An Experimental Study of Boundary Layer Transition written by Henry William Bennett and published by . This book was released on 1953 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Turbulent Boundary Layer on a Flat Plate at Zero Incidence written by Sherman Udell Moxness and published by . This book was released on 1966 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AN EXPERIMENTAL STUDY IN THREE DIMENSIONAL TURBULENT BOUNDARY LAYERS ON A FLAT PLATE WITH PARALLEL FLOW written by Milton George Wille and published by . This book was released on 1964 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Boundary Layer Flow Transition Over a Flat Plate written by William John Gander and published by . This book was released on 1938 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Solution of Laminar and Turbulent Boundary Layer Equations Including Transition and Experimental Study of a Flat Plate with a Blunt Fin at Incidence written by Alice J. Chen (CAPT, USAF.) and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Boundary Layer Transition on a Flat Plate with a Point Heat Source at the Leading Edge written by W. J. McCroskey and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The addition of heat to the boundary layer of an insulated flat plate by means of a point heat source at the leading edge has been found to delay the transition of laminar flow to turbulence. This paper describes an experimental investigation of the variation of transition Reynolds number on a roughened flat plate model with a heat source of strength, Q, spanning the leading edge. The present problem is compared with the problem of an aerodynamically heated boundary layer on an insulated flat plate. Transition Reynolds number was found to increase with increasing S over a range equivalent to a Mach number variation of 0
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:
Download or read book Experimental Study of Transition Induced in an Accelerated Boundary Layer at Low Reynolds Numbers written by Richard S. Snedeker and published by . This book was released on 1971 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of a highly accelerated laminar boundary layer to disturbances introduced by a vibrating ribbon is described. The boundary layer was formed on a flat plate under the influence of a pressure gradient equal to that occurring at a two-dimensional stagnation point. The range of initial test Reynolds numbers was 492 to 805, and the range of nondimensional disturbance frequencies (Strouhal number) was .03 to .20. The qualitative effects of disturbances from extraneous sources are discussed, and some observations of the detailed motion of the vibrating ribbon are described.
Download or read book An Experimental Study of the Effect of a Backward Facing Step in the Flat Plate Upon the Laminar Boundary layer written by Werner Lurz and published by . This book was released on 1980 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Boundary Layer Transition written by Henry William Bennett and published by . This book was released on 1953 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transition of the Laminar Boundary Layer on a Delta Wing with 74 Degree Sweep in Free Flight at Mach Numbers from 2 8 to 5 3 written by Gary T. Chapman and published by . This book was released on 1961 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
