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Author : Warren H. Curry
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.3/5 (91 download)
Download or read book Supersonic Wind Tunnel Diffuser Studies written by Warren H. Curry and published by . This book was released on 1952 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. H. Curry
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (977 download)
Download or read book Diffuser Study for the 4" X 10" Supersonic Wind Tunnel written by W. H. Curry and published by . This book was released on 1949 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Klaus Oswatitsch
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (31 download)
Download or read book Investigations on Diffuser Efficiency in Supersonic Wind Tunnels written by Klaus Oswatitsch and published by . This book was released on 1948 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Heinrich Ramm
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (91 download)
Download or read book Phenomena in Supersonic Diffusers written by Heinrich Ramm and published by . This book was released on 1947 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John K. Molloy
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect of Diffusers, Shrouds, and Mass Injection on the Starting and Operating Characteristics of a Mach 5 Free Jet Tunnel written by John K. Molloy and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter P. Wegener
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (227 download)
Download or read book Supersonic Diffuser Research written by Peter P. Wegener and published by . This book was released on 1977 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research concerned a survey of existing literature on supersonic diffusers, and experimental study on pressure recovery of supersonic diffusers in a variety of facilities with a variety of configurations following a contoured Mach Number = 3 nozzle. The nozzle and test section were free of models and the diffusers were either of constant cross section (straight duct), or of variable cross section, and they were generally patterned to be representative of some classes of gasdynamic laser nozzles. The optimum pressure recovery of the operating facility and the minimum pressure recovery required to start supersonic flow at the nozzle end were determined. The facilities used were a small continuous operation supersonic wind tunnel and a Ludwieg tube operating as a blow down wind tunnel with a steady state in the millisecond region. Careful correlation with data from other facilities taken under different circumstances was performed, while a number of the results found were unique to the current investigation.
Author :
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (227 download)
Download or read book Pressure Recovery and Related Properties in Supersonic Diffusers: A Review written by and published by . This book was released on 1974 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers a literature survey on the status of present knowledge on supersonic diffusers. Three types of diffusers are examined: wind tunnel diffusers, ramjet inlets, and supersonic ejectors. No systematic study on wind tunnel diffusers has been found. The results obtained in specific studies, made in conjunction with the design and installation of a number of wind tunnels, show that 100% of normal shock recovery is obtained for M less than 10. Some systematic work exists for ramjet diffusers, with most of the attention being paid to external compression configurations. For supersonic ejectors, comprehensive studies have been made, and useful empirical design methods are available.
Author : Patrick J. Johnston
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect of a Variable-geometry Diffuser on the Operating Characteristics of a Helium Tunnel Designed for a Mach Number in Excess of 20 written by Patrick J. Johnston and published by . This book was released on 1960 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (227 download)
Download or read book Influence of Variation of Aspect Ratio on the Pressure Recovery in Super Sonic Diffusers written by and published by . This book was released on 1979 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic investigation was made of the gasdynamics of supersonic diffusers, in particular, diffusers applicable to gasdynamic or other types of flow lasers. The main conclusion was that almost all the research on supersonic diffusers was performed with specific application, namely a specific wind tunnel installation or an engine, in mind. Systematic studies on the gasdynamics of diffusers even of simple geometries were scarce, making it difficult, if not impossible, to extend existing work to other configurations. Despite the fact that some of the high Mach number wind tunnels operated with known unequilibrated internal modes, there was no research on nonequilibrium flow effects in diffusers in the literature consulted. Moreover, in most conventional wind tunnels, the cross-section of the test section is either circular or squarish. Consequently, most diffuser studies were concerned with circular, square, or rectangular cross-sections with comparable widths and heights, characterized by an aspect ratio, defined as the width to height ratio, of unity or close to unity.
Author : R. V. DeLeo
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (458 download)
Download or read book Experimental Evaluation of Supersonic Wind Tunnel Performance with Solid Wall Test Section - Supersonic Diffuser - Scavenging Scoop Combinations written by R. V. DeLeo and published by . This book was released on 1956 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental evaluation of wind tunnel performance has been conducted for the University of Minnesota by the Rosemount Aeronautical Laboratories within a test section Mach number range of 1.5 to 4.4. In order to evaluate the effect of the addition of various scavenge ducts to the basic wind tunnel configuration, the performance of a solid wall test section - adjustable diffuser combination was determined both with and without a scavenging duct present.
Author : Noor Ahmed
Publisher : BoD – Books on Demand
ISBN 13 : 9535110470
Total Pages : 232 pages
Book Rating : 4.5/5 (351 download)
Download or read book Wind Tunnel Designs and Their Diverse Engineering Applications written by Noor Ahmed and published by BoD – Books on Demand. This book was released on 2013-03-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to be a valuable addition to students, engineers, scientists, industrialists, consultants and others providing greater insight into wind tunnel designs and their enormous research potential. It is a compilation of works from world experts on subsonic and supersonic wind tunnel designs, applicable to a diverse range of disciplines. The book is organised in two sections. The first section comprises of three chapters on various aspects of stationary and portable subsonic wind tunnel designs, followed by one chapter on supersonic wind tunnel and the final chapter discusses a method to address unsteadiness effects of fan blade rotation. The second section contains four chapters regarding wind tunnel applications across a multitude of engineering fields including civil, mechanical, chemical and environmental engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (227 download)
Download or read book A SYSTEMATIC STUDY OF A VARIABLE AREA DIFFUSER FOR SUPERSONIC WIND TUNNELS. written by and published by . This book was released on 1952 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: A diffuser of variable geometric shape was tested for pressure recovery at M = 1.9, 2.5, 2.8, and 4.9 in the continuous 18- x 18-cm Aerophysics tunnel no. 3. The diffuser consisted of a converging-diverging, 2-dimensional, variable-area duct. The opening of the diffuser throat and the location of the throat along the center line of the duct were varied systematically. The effect of closed or half-open test section on diffuser efficiency and that of a model in the air stream were investigated. Operating and starting pressure ratios of the wind tunnel were determined, and performance data of the diffuser are given for both cases. Pressure recoveries of the operating tunnel were obtained for optimum diffuser configuration with diffuser end-pressure ranging up to 1.8 times pitot pressure in the test section at M = 4.9. Also lower pressure ratios to start the tunnel than previously known were found. Using this diffuser, a continuous tunnel can be operated with less power, or an intermittent tunnel can run for a longer time, and they can be started with a smaller (closer to one) over-all pressure ratio. The pressure recoveries obtained in a half-open test section and with models in the stream are somewhat lower, but the performance of the diffuser is not seriously offset by those modifications.
Author : J. L. Diggins
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (976 download)
Download or read book A Systematic Study of a Variable Area Diffuser for Supersonic Wind Tunnels written by J. L. Diggins and published by . This book was released on 1952 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. L. Diggins
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (11 download)
Download or read book Diffuser Investigation in a Supersonic Wind Tunnel written by J. L. Diggins and published by . This book was released on 1951 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. M. Bespalov
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (227 download)
Download or read book Study of the Process of the Starting-Up the Diffuser of Supersonic Wind Tunnel with Eiffel Chamber written by A. M. Bespalov and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an experimental study are given of the process of starting the diffuser of a supersonic wind tunnel with an Eiffels chamber, which has a conical nozzle with Mach number M=2.72, and cylindrical diffusers of different lengths and diameters. It is shown that the stabilization of flow in the diffuser is related to the formation of shock in the vicinity the attachment point of the jet.
Author : Christopher David King
Publisher :
ISBN 13 :
Total Pages : 257 pages
Book Rating : 4.:/5 (81 download)
Download or read book Computational Analysis of Diffuser Performance for the Subsonic Aerodynamic Research Laboratory Wind Tunnel written by Christopher David King and published by . This book was released on 2012 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Air Force has expressed interest in improving the efficiency of the Subsonic Aerodynamic Research Laboratory (SARL) wind tunnel. In a previous analysis of losses throughout the tunnel, it was found that approximately thirty percent of pressure losses through the tunnel occurred at the exit of the tunnel (Britcher, 2011). The use of alternative diffuser geometries in reducing pressure losses at the exit of the tunnel and the computation of their efficiency improvement with respect to the original tunnel geometry and with respect to each other for the SARL wind tunnel are the focus of this research. Three different diffuser geometries were evaluated numerically using both the SolidWorks Flow Simulation add-on, and ANSYS FLUENT. For each of these geometries, a scaled down model was manufactured to be used for experimental validation in future work. Both the full size and small scale numerical models were evaluated with an inlet velocity of sixty meters per second. As the nature of the flow at this point in the wind tunnel is not known, both a uniform and fully developed turbulent flow profiles were evaluated for each design, both for the small scale models and the full size models, to determine pressure losses with respect to the varying flow types entering the diffusers. This research seeks to determine the effects of these different geometries on the flow downstream of the exit, and the possible energy savings associated with each design. In addition, it seeks to compare the numerical results obtained from both SolidWorks Flow Simulation and ANSYS FLUENT.
Author : G. J. Hanus
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Supersonic Wind Tunnel Diffuser Performance with High Model Blockage at Moderate to Low Reynolds Numbers written by G. J. Hanus and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
