Results 211 to 220 of about 1,127 (258)
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Losses In Turbine and Compressor Cascades
2005The flow through a turbomachine is generally three-dimensional, viscous, highly unsteady, transitional, turbulent, and compressible. This complex flow is associated with total pressure losses caused by different flow and geometry parameters. To accurately predict the efficiency of a turbomachine, accurate flow calculation is required.
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The Jet-Flap Compressor Cascade
Journal of Basic Engineering, 1961Scholz’s method for measurements on a two-dimensional cascade has been extended to include mass and energy input into the main flow by trailing-edge jets. Pressure recovery and mixing losses downstream of the cascade have been theoretically investigated and the need of low jet velocities has been emphasized.
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Analysis of Circumferential Fluctuation in Compressor Cascades
Volume 2B: Turbomachinery, 2014This paper presents the relation between circumferential fluctuation and the geometric and flow parameters. The governing equations are derived by circumferentially averaging the three-dimensional (3D) Navier-Stokes equations. Different types of compressor cascades are simulated and the circumferential fluctuation terms are extracted according to the ...
Ke Wan +3 more
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Experimental Investigation of Compressor Cascade Wakes
Volume 1: Turbomachinery, 1982This report discusses a cascade wake experiment intended to improve wake modeling in an airfoil analysis. The experiment included extensive measurements of the near and far wakes, trailing edge boundary layers, and airfoil surface static pressures.
D. E. Hobbs +3 more
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Annular Cascade for Radial Compressor Development
Volume 7: Turbomachinery, Parts A, B, and C, 2011A full-annulus cascade for radial compressor stator development has been designed and commissioned. The cascade has been developed for the rapid screening of novel stator concepts to facilitate risk mitigation in the early design phase and the validation/calibration of numerical predictions. The rig consists of two main parts.
Christian Aalburg +5 more
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Multi-lingual cascading text compressors for WWW
Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540), 2002Global sharing and distribution of information on the Internet result in a great demand for efficient multi-lingual text compression for Web servers and proxy implementations. Current text compressors such as Huffman coding, Lempel-Ziv (LZ) variants, and LZ-Huffman cascading fail to perform efficiently because of the mis-matched character sampling size
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Computation of Shocked Flows in Compressor Cascades
ASME 1972 International Gas Turbine and Fluids Engineering Conference and Products Show, 1972A numerical technique is presented for the calculation of shocked flows in compressor cascades. The problem is posed in the time-dependent form and the asymptotic solution at large times provides the solution of the steady physical problem. The solutions exhibit the formation and movement of shocks as the static pressure ratio across the cascade is ...
S. Gopalakrishnan, R. Bozzola
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Numerical Investigation on Tandem Compressor Cascades
ASME 2015 Gas Turbine India Conference, 2015Tandem blade arrangement of axial compressors has been proposed to obtain high loading and turning compared to a single blade. The objectives of the current study is to investigate the effect of percent pitch, axial overlap and incidence angle for a low speed axial compressor stator cascade and to supplement the results with the flow structures ...
Manas Madasseri Payyappalli, S. R. Shine
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Secondary flow in compressor cascades
1956An experimental study was made of the secondary flow in a compressor cascade. Detailed surveys of the entire flow channel at various operating conditions are presented. The chief difference of the experimental results from those predicted by linearized theory was the presence of a turbulent separation region at the corner of the wall and the low ...
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Turbine and Compressor Cascade Flow Forces
2005The last chapter was dedicated to the energy transfer within turbomachinery stages. The stage mechanical energy production or consumption in turbines and compressors were treated from a unified point of view by introducing a set of dimensionless parameters.
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