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Performance Characteristics Of Plane Wall Diffuser And Some New Concepts Of Diffuser Flow Mechanisms
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Book Synopsis Performance Characteristics of Plane Wall Diffuser and Some New Concepts of Diffuser Flow Mechanisms by : Sylvain Friedlich
Download or read book Performance Characteristics of Plane Wall Diffuser and Some New Concepts of Diffuser Flow Mechanisms written by Sylvain Friedlich and published by . This book was released on 1959 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Characteristics of Plane-wall Two-dimensional Diffusers by : Elliott G. Reid
Download or read book Performance Characteristics of Plane-wall Two-dimensional Diffusers written by Elliott G. Reid and published by . This book was released on 1953 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experiments have been made at Stanford University to determine the performance characteristics of plane-wall, two-dimensional diffusers which were so proportioned as to insure reasonable approximation of two-dimensional flow.
Download or read book Journal of Basic Engineering written by and published by . This book was released on 1969 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Turbomachinery Diffuser Design Technology by : David Japikse
Download or read book Turbomachinery Diffuser Design Technology written by David Japikse and published by Concepts Eti. This book was released on 1998 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Performance-limiting Flow Mechanisms in a Centrifugal Compressor Stage by : David W. Erickson (S.M.)
Download or read book Characterization of Performance-limiting Flow Mechanisms in a Centrifugal Compressor Stage written by David W. Erickson (S.M.) and published by . This book was released on 2017 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research characterizes the performance of a centrifugal compressor stage with a special focus on the pipe diffuser. Two diffuser configurations are studied, one of which is a truncated version of the other. Experimental data acquired on a research compressor stage is interrogated along with a set of well-designed Reynolds-Averaged Navier Stokes computations, complemented by reduced order flow modeling. The fundamental performance-limiting flow mechanisms in the diffuser are identified and used to physically relate important geometry features and operating conditions to the observed compressor pressure rise, efficiency, and operability characteristics. Despite large differences in their geometry, the two diffuser configurations exhibit similar pressure recovery characteristics due to differences in exit nonuniformity and flow angle which result in similar effective area ratios. Variations in the diffuser pressure recovery coefficient with operating point are found to be most influenced by the diffuser inlet flow angle, and secondly by the inlet Mach number. The diffuser inlet flow angle has the primary effect of setting the diffuser inlet one-dimensional area ratio, increasing diffusion at high flow angles. In addition, the diffuser incidence angle influences the formation of counter-rotating vortex pairs that persist throughout the diffuser passage. Using a two-dimensional integral boundary layer model that is modified to accommodate three-dimensional effects as source terms, these secondary flows are shown to detrimentally impact the diffuser pressure rise capability by accumulating high loss flow along the diffuser wall near the plane of symmetry between the vortices. This contributes to the extent and location of a large diffuser passage separation, especially for the baseline diffuser. The impact of the vortices on the boundary layer growth rate is shown to scale inversely with diffuser aspect ratio. The major performance difference between the two diffuser configurations is that the truncated diffuser configuration experiences enhanced stall margin over the baseline diffuser at the design speed. These differences are traced to reduced secondary flows influence and thus reduced separation extent for the higher aspect ratio truncated diffuser. It is hypothesized that the onset of stall for the baseline diffuser configuration is initiated by the transition of the vortex location and corresponding passage separation between diffuser pressure and suction sides with increasing cusp incidence. Conversely, because the extent of the passage separation in the truncated diffuser is diminished due to the higher aspect ratio, the switch in separation side does not immediately initiate instability. The fact that secondary flows have a large influence on diffuser pressure rise capability and compressor stability is counter to conventional preliminary diffuser design approaches which neglect such 3D effects. The findings of this research may therefore be considered during preliminary design optimization to produce better-performing diffuser designs.
Author :American Society of Mechanical Engineers. Turbomachinery Committee Publisher : ISBN 13 : Total Pages :236 pages Book Rating :4.:/5 (43 download)
Book Synopsis Advanced Centrifugal Compressors by : American Society of Mechanical Engineers. Turbomachinery Committee
Download or read book Advanced Centrifugal Compressors written by American Society of Mechanical Engineers. Turbomachinery Committee and published by . This book was released on 1971 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Master's Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States by :
Download or read book Master's Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1960 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plane-wall Diffuser Flow by : Ivar G. Jonsson
Download or read book Plane-wall Diffuser Flow written by Ivar G. Jonsson and published by . This book was released on 1968 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1953 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some New Mechanisms and Conceptions of Stall Including the Behavior of Vaned and Unvaned Diffusers by : Stanford University. Thermosciences Division
Download or read book Some New Mechanisms and Conceptions of Stall Including the Behavior of Vaned and Unvaned Diffusers written by Stanford University. Thermosciences Division and published by . This book was released on 1957 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Characteristics of a 24 Degree Straight-outer-wall Annular-diffuser-tailpipe Combination Utilizing Rectangular Vortex Generators for Flow Control by : Charles C. Wood
Download or read book Performance Characteristics of a 24 Degree Straight-outer-wall Annular-diffuser-tailpipe Combination Utilizing Rectangular Vortex Generators for Flow Control written by Charles C. Wood and published by . This book was released on 1953 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Paper written by and published by . This book was released on 1984 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Aeronautical Journal written by and published by . This book was released on 1971 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1993 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering Index written by and published by . This book was released on 1954 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt: