Results 211 to 220 of about 1,092 (255)

Analysis of Circumferential Fluctuation in Compressor Cascades

Volume 2B: Turbomachinery, 2014
This 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, Mingzhi Tang, Donghai Jin, Xingmin Gui   +3 more
openaire   +1 more source

Experimental Investigation of Compressor Cascade Wakes

Volume 1: Turbomachinery, 1982
This 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, J. H. Wagner, J. F. Dannenhoffer, R. P. Dring   +3 more
openaire   +1 more source

Numerical Investigation on Tandem Compressor Cascades

ASME 2015 Gas Turbine India Conference, 2015
Tandem 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
openaire   +1 more source

Multi-lingual cascading text compressors for WWW

Proceedings International Conference on Information Technology: Coding and Computing (Cat. No.PR00540), 2002
Global 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
openaire   +1 more source

Computation of Shocked Flows in Compressor Cascades

ASME 1972 International Gas Turbine and Fluids Engineering Conference and Products Show, 1972
A 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
openaire   +1 more source

Secondary flow in compressor cascades

1956
An 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 ...
openaire   +1 more source

Loss and Stall Analysis of Compressor Cascades

Journal of Basic Engineering, 1959
A simple equation expressing the wake momentum thickness as a primary function of the suction-surface diffusion ratio (ratio of maximum surface velocity to outlet velocity) of coaventional low-speed cascade blades is derived from boundary-layer theory in conjunction with simplifying approximations.
openaire   +1 more source

Turbine and Compressor Cascade Flow Forces

2005
The 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.
openaire   +2 more sources

Gas separation membrane cascades II. Two-compressor cascades

Journal of Membrane Science, 1996
This paper presents and discusses a large number of gas separation membrane cascade schemes using two compressors. Although some of these cascade schemes are known in the literature, the majority are new, providing more options for a given separation task.
Rakesh Agrawal, Jianguo Xu
openaire   +1 more source

A Navier-Stokes study of rotating stall in compressor cascades

24th Joint Propulsion Conference, 1988
Numerical simulations of unsteady flow in a linear cascade of J-79 stator blades are conducted with a finite-difference method. The flowfield is determined by solving two-dimensional compressible Navier-Stokes equations. The effects of turbulence are accounted for by a mixing length model.
F. Davoudzadeh, N.-S. Liu, S. J. Shamroth, S. J. Thoren   +3 more
openaire   +1 more source