Download or read book Secondary Flow in a Turbine Blade Cascade written by Lahouari Adjlout and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of Secondary flow Patterns in an Annular Cascade of Turbine Nozzle Blades with Vortex Design written by Harold E. Rohlik and published by . This book was released on 1953 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to increase understanding of the origin of losses in a turbine, the secondary-flow components in the boundary layers and the blade wakes of an annular cascade of turbine nozzle blades (vortex design) were investigated. A detailed study was made of the total-pressure contours and, particularly, of the inner-wall loss cores down-stream of the blades.

Download or read book The Secondary Flow in a Cascade of Turbine Blades written by W. D. Armstrong and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Secondary Flow in a Cascade of Turbine Blades written by Aeronautical Research Council and published by . This book was released on 1957 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Secondary Flow in a Cascade of Turbine Blades written by Aeronautical Research Council and published by . This book was released on 1957 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book End wall Skin Friction and Secondary Flow Losses Downstrean of a Turbine Blade Cascade written by Abdelkader Boumedmed and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of the Secondary Flow Phenomena in a Cascade of High deflection Axial flow Impulse Turbine Blades written by Rodney Loren Bown and published by . This book was released on 1966 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cascade tests were performed on models of the rotor blades of a high-deflection, axial-flow impulse turbine to determine the secondary flow losses. The tests were performed at the Rectilinear Cascade Test Facility of the Turbo-Propulsion Laboratories of the Department of Aeronautics, Naval Postgraduate School. The results were compared with the predicted losses from various formulas that have been proposed in the technical literature. The comparison showed that most formulas predict a secondary loss that is about ten times as high as that determined in the present tests. Photographs were obtained of the boundary layer traces by the use of lamp black coating. These photographs show the effects of secondary flows on the performance of a cascade. (Author).

Download or read book An Investigation of the Secondary Flow Phenomena in a Cascade of High deflection Axial flow Impulse Turbine Blades written by and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cascade tests were performed on models of the rotor blades of a high-deflection, axial-flow impulse turbine to determine the secondary flow losses. The tests were performed at the Rectilinear Cascade Test Facility of the Turbo-Propulsion Laboratories of the Department of Aeronautics, Naval Postgraduate School. The results were compared with the predicted losses from various formulas that have been proposed in the technical literature. The comparison showed that most formulas predict a secondary loss that is about ten times as high as that determined in the present tests. Photographs were obtained of the boundary layer traces by the use of lamp black coating. These photographs show the effects of secondary flows on the performance of a cascade. (Author).

Download or read book Cooling air Injection Into Secondary Flow and Loss Fields Within a Linear Turbine Cascade written by A. Yamamoto and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand overall performance and internal flows of air-cooled turbine blade rows, flows in a model linear cascade were surveyed with secondary air injection from various locations of the blade surfaces. The secondary air interacted with the cascade passage vortices and changed the loss distribution significantly. The cascade overall loss decreased when the air was injected along the mainstream and increased when the air was injected against the mainstream from some locations of the blade leading edge. Effects on overall kinetic energy of the secondary flows and on the cascade outlet flow angle were also discussed in this paper.

Download or read book Comparison of Secondary Flows and Boundary layer Accumulations in Several Turbine Nozzles written by Milton G. Kofskey and published by . This book was released on 1953 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of secondary-flow loss cores originating in turbine nozzle blade passages was conducted by means of flow visualization studies and detailed flow measurements. The degree of which blade surface velocity profiles affect the magnitude and concentration of loss cores was investigated by comparing three nozzle blade configurations.

Download or read book Secondary Flows and Losses in a Turbine Cascade written by D. G. Gregory-Smith and published by . This book was released on 1983 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: In designing axial flow turbines, one needs relatively simple prediction techniques for the angle variations and losses produced by secondary flows. To improve the physical basis of such techniques, an investigation was made of the flow in a cascade of large scale rotor blades of some 110 deg of turning. The aspect around 0.2 of the span. The flow was traversed in great detailed on ten planes using cobra-type probes with a computerised data recording and analysis system. Results are presented graphically using contour and vector plots on various planes through the flow field. The horse-show vortex and passage vortex development are clearly seen, with the upstream boundary layer being shed downstream as a loss core. Another region of high loss is related to a counter vortex in the corner between the sunction surface and the end wall. Results were also pitch averaged, and compared with predictions of angle and loss distribution. Some traversing was carried out using hot wire anemometry. Regions of high turbulence intensity and shear stress were identified, associated with the regions of high loss. Some indication is given of the mechanisms of loss production within the cascade.

Download or read book Visualization of Secondary flow Phenomena in Blade Row written by H. Z. Herzig and published by . This book was released on 1952 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Secondary Flow Measurements in a Turbine Cascade with High Inlet Turbulence written by D. G. Gregory-Smith and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the mean and turbulent flow field have been made in a cascade of high turning turbine rotor blades. The inlet turbulence was raised to 5 percent by a grid placed upstream of the cascade, and the secondary flow region was traversed within and downstream of the blades using a five-hole probe and crossed hot wires. Flow very close to the end wall was measured using a single wire placed at several orientations. Some frequency spectra of the turbulence were also obtained. The results show that the mean flow field is not affected greatly by the high inlet turbulence. The Reynolds stresses were found to be very high, particularly in the loss core. Assessment of the contributions to production of turbulence by the Reynolds stresses shows that the normal stresses have significant effects, as do the shear stresses. The calculation of eddy viscosity from two independent shear stresses shows it to be fairly isotropic in the loss core. Within the blade passage, the flow close to the end wall is highly skewed and exhibits generally high turbulence. The frequency spectra show no significant resonant peaks, except for one at very low frequency, attributable to an acoustic resonance.

Download or read book Film Cooled Small Turbine Blade Research Volume I Aerodynamic Study of Secondary Flows written by C. Sieverding and published by . This book was released on 1976 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall study concerns an investigation on the cooling and aerodynamic problems associated with a high speed turbine cascade of small blade height for use on small gas turbines. The secondary flow behavior in turbines is presented in Vol. I and the cooling aspects are presented in Vol. II. Vol. I reports on the study of small aspect ratio blades. A program has been initiated with the aim of obtaining a better physical understanding of the real secondary flow phenomenon. The total program will cover a period of three years. It includes very detailed low speed tests with measurements inside the blade passage, cross checking of the low speed tests in a high speed cascade and the investigation of the effect of film cooling on secondary flows. Vol I, which reports on the first year efforts, presentes mainly low speed test results and a limited amount of high speed data.

Download or read book Detection of Secondary Flow in a Turbine Cascade Using a Tracer Gas Technique written by Bruce Loren Smith and published by . This book was released on 1983 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Secondary Flows in Turbomachines written by Von Karman Institute for Fluid Dynamics and published by . This book was released on 1975 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Three Dimensional Flow Field Measurements in a Transonic Turbine Cascade written by P. W. Geil and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented at the International Gas Turbine and Aeroengine Congress & Exhibition Birmingham, UK - June 10-13, 1996.