Three-dimensional Design of Radial-inflow Turbines PDF Download
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Author: M. Zangeneh-Kazemi
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: M. Zangeneh-Kazemi
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: M. Zangeneh-Kazemi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Yi-Lung Yang
Publisher:
ISBN:
Category :
Languages : en
Pages : 316
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Author: Mehrdad Zangeneh
Publisher:
ISBN:
Category : Turbines
Languages : en
Pages : 0
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This paper is concerned with the design of a high speed, 5 inch diameter radial-inflow turbine for medium-sized diesel engine turbocharger applications. The turbine was designed by a newly developed fully three dimensional compressible inverse design method, in which the blade shapes are computed for a specified distribution of rV̄ø. The designed blades had non-radial blade filaments and therefore the impeller was carefully analyzed for its structural integrity. This was achieved by the iterative use of a three dimensional structural and vibration analysis program and the design method. The impeller was made by a casting process. The performance of the new impeller was measured and then compared with three other impellers, one conventional and two experimental. The new impeller performed substantially better than all the baseline turbines and showed a 5.5% improvement in the total-to-static efficiency over the conventional turbine, 2.5% of which was attributable to the aerodynamically superior blade shape computed by the three dimensional inverse design method. The improvement in efficiency was not just confined to the design point and an appreciable improvement could be observed at off-design conditions.
Author: William Djaja Tjokroaminata
Publisher:
ISBN:
Category :
Languages : en
Pages : 240
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Author: Massachusetts Institute of Technology. Gas Turbine Laboratory
Publisher:
ISBN:
Category :
Languages : en
Pages : 65
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Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781792948770
Category :
Languages : en
Pages : 32
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Book Description
In the two papers on the 'Theory of Blade Design for Large Deflections' published in 1984, a new inverse design technique was presented for designing the shape of turbomachinery blades in three-dimensional flow. The technique involves the determination of the blade profile from the specification of a distribution of the product of the radius and the pitched averaged tangential velocity (i.e., r bar-V(sub theta), the mean swirl schedule) within the bladed region. This is in contrast to the conventional inverse design technique for turbomachinery blading in two dimensional flow in which the blade surface pressure or velocity distribution is specified and the blade profile determined as a result; this is feasible in two-dimensional flow because the streamlines along the blade surfaces are known a priori. However, in three-dimensional flow, the stream surface is free to deform within the blade passage so that the streamlines on the blade surfaces are not known a priori; thus it is difficult and not so useful to prescribe the blade surface pressure or velocity distribution and determine the resulting blade profile. It therefore seems logical to prescribe the swirl schedule within the bladed region for designing a turbomachinery blade profile in three-dimensional flow. Furthermore, specifying r bar-V(sub theta) has the following advantages: (1) it is related to the circulation around the blade (i.e., it is an aerodynamic quantity); (2) the work done or extracted is approximately proportional to the overall change in r bar-V(sub theta) across a given blade row (Euler turbine equation); and (3) the rate of change of r bar-V(sub theta) along the mean streamline at the blade is related to the pressure jump across the blade and therefore the blade loading. Since the publications of those two papers, the technique has been applied to the design of a low speed as well as a high speed radial inflow turbine (for turbocharger applications) both of which showed definite improvements...
Author: Ronald H. Aungier
Publisher: American Society of Mechanical Engineers
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 424
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Book Description
This book provides a thorough description of actual, working aerodynamic design and analysis systems, for both axial-flow and radial-flow turbines. It describes the basic fluid dynamic and thermodynamic principles, empirical models and numerical methods used for the full range of procedures and analytical tools that an engineer needs for virtually any type of aerodynamic design or analysis activity for both types of turbine. The book includes sufficient detail for readers to implement all or part of the systems. The author provides practical and effective design strategies for applying both turbine types, which are illustrated by design examples. Comparisons with experimental results are included to demonstrate the prediction accuracy to be expected. This book is intended for practicing engineers concerned with the design and development of turbines and related machinery.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724982902
Category :
Languages : en
Pages : 34
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Off design aerodynamic performance of the solid version of a cooled radial inflow turbine is analyzed. Rotor surface static pressure data and other performance parameters were obtained experimentally. Overall stage performance and turbine blade surface static to inlet total pressure ratios were calculated by using a quasi-three dimensional inviscid code. The off design prediction capability of this code for radial inflow turbines shows accurate static pressure prediction. Solutions show a difference of 3 to 5 points between the experimentally obtained efficiencies and the calculated values. Tirres, Lizet Unspecified Center NASA-CR-189207, E-7175, NAS 1.26:189207, AIAA PAPER 92-3069 NAS3-25266; RTOP 535-05-10...
Author: Harold E. Rohlik
Publisher:
ISBN:
Category : Turbines
Languages : en
Pages : 38
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