Experimental investigation of the three-dimensional flow in an annular compressor cascade at large incidence

1992 ◽  
Vol 1 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Yuhong Li ◽  
Dajun Ye ◽  
Biao Lu
Keyword(s):  
Experimental Investigation ◽  
Three Dimensional ◽  
Compressor Cascade ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Experimental Investigation of the Three-Dimensional Flow in an Annular Compressor Cascade

1988 ◽  
Vol 110 (4) ◽  
pp. 467-478 ◽  
Author(s):  
H. D. Schulz ◽  
H. D. Gallus
Keyword(s):  
Boundary Layer ◽  
Experimental Investigation ◽  
Three Dimensional ◽  
Suction Side ◽  
Boundary Layer Transition ◽  
Compressor Cascade ◽  
Three Dimensional Flow ◽  
Layer Transition ◽  
Integral Boundary ◽  
Dimensional Flow

A detailed experimental investigation was carried out to examine the influence of blade loading on the three-dimensional flow in an annular compressor cascade. Data were acquired over a range of incidence angles. Included are airfoil and endwall flow visualization, measurement of the static pressure distribution on the flow passage surfaces, and radial-circumferential traverse measurements. The data indicate the formation of a strong vortex near the rear of the blade passage. This vortex transports low-momentum fluid close to the hub toward the blade suction side and seems to be partly responsible for the occurrence of a hub corner stall. The effect of increased loading on the growth of the hub corner stall and its impact on the passage blockage are discussed. Detailed mapping of the blade boundary layer was done to determine the loci of boundary layer transition and flow separation. The data have been compared with results from an integral boundary layer method.

Three-Dimensional Separated Flow Field in the Endwall Region of an Annular Compressor Cascade in the Presence of Rotor-Stator Interaction: Part I — Quasi-Steady Flow Field and Comparison With Steady-State Data

1989 ◽  
Author(s):  
H. D. Schulz ◽  
H. E. Gallus ◽  
B. Lakshminarayana
Keyword(s):  
Flow Field ◽  
Separation Bubble ◽  
Three Dimensional ◽  
Separated Flow ◽  
Major Influence ◽  
Compressor Cascade ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Corner Flow ◽  
Rotor Stator Interaction

An experimental study of three-dimensional flow field in an annular compressor cascade with an upstream rotor has been carried out at four different incidences to the stator blade. Blade boundary layers and the three-dimensional flow field at the exit are surveyed using a hot wire sensor and a five hole probe, respectively. The data on the blade boundary layer, passage flow and separated corner flow is presented. The upstream rotor wake has a major influence on the transition, laminar separation bubble, extent of wall/corner flow separation, aerodynamic losses, secondary flow and three-dimensional flow inside the passage. Detailed interpretation of the effects of upstream wakes on the entire passage flow is presented and compared with the data in the absence of a rotor.

Experimental Study on the Three-Dimensional Flow Within a Compressor Cascade With Tip Clearance: Part I—Velocity and Pressure Fields

1993 ◽  
Vol 115 (3) ◽  
pp. 435-443 ◽  
Author(s):  
S. Kang ◽  
C. Hirsch
Keyword(s):  
Three Dimensional ◽  
Leading Edge ◽  
Surface Flow ◽  
Tip Clearance ◽  
Tip Vortex ◽  
Compressor Cascade ◽  
Three Dimensional Flow ◽  
Tip Leakage Vortex ◽  
Tip Leakage ◽  
Dimensional Flow

Experimental results from a study of the three-dimensional flow in a linear compressor cascade with stationary endwall at design conditions are presented for tip clearance levels of 1.0, 2.0, and 3.3 percent of chord, compared with the no-clearance case. In addition to five-hole probe measurements, extensive surface flow visualizations are conducted. It is observed that for the smaller clearance cases a weak horseshoe vortex forms in the front of the blade leading edge. At all the tip gap cases, a multiple tip vortex structure with three discrete vortices around the midchord is found. The tip leakage vortex core is well defined after the midchord but does not cover a significant area in traverse planes. The presence of the tip leakage vortex results in the passage vortex moving close to the endwall and the suction side.

Experimental investigation of local three-dimensional flow field around bridge abutments in non-cohesive and cohesive soils

2012 ◽  
Vol 4 (4) ◽  
pp. 37-50
Author(s):  
Mohamed Mokhles Abou-Seida ◽  
Gamal H. Elsaeed ◽  
Tarek Mohamed Salaheldin Mostafa ◽  
Elzahry Farouk Mohamed Elzahry
Keyword(s):  
Experimental Investigation ◽  
Flow Field ◽  
Three Dimensional ◽  
Cohesive Soils ◽  
Bridge Abutments ◽  
Three Dimensional Flow ◽  
Dimensional Flow

Three-Dimensional Separated Flow Field in the Endwall Region of an Annular Compressor Cascade in the Presence of Rotor-Stator Interaction: Part 1—Quasi-Steady Flow Field and Comparison With Steady-State Data

1990 ◽  
Vol 112 (4) ◽  
pp. 669-678 ◽  
Author(s):  
H. D. Schulz ◽  
H. E. Gallus ◽  
B. Lakshminarayana
Keyword(s):  
Flow Field ◽  
Separation Bubble ◽  
Three Dimensional ◽  
Separated Flow ◽  
Major Influence ◽  
Compressor Cascade ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Corner Flow ◽  
Rotor Stator Interaction

An experimental study of three-dimensional flow field in an annular compressor cascade with an upstream rotor has been carried out at four different incidences to the stator blade. Blade boundary layers and the three-dimensional flow field at the exit are surveyed using a hot-wire sensor and a five-hole probe, respectively. The data on the blade boundary layer, passage flow, and separated corner flow are presented. The upstream rotor wake has a major influence on the transition, laminar separation bubble, extent of wall/corner flow separation, aerodynamic losses, secondary flow, and three-dimensional flow inside the passage. A detailed interpretation of the effects of upstream wakes on the entire passage flow is presented and compared with the data in the absence of a rotor.

Numerical and experimental investigation of three-dimensional flow in extrusion dies

1993 ◽  
Vol 33 (7) ◽  
pp. 393-399 ◽  
Author(s):  
Mahesh Gupta ◽  
Yogesh Jaluria ◽  
Valentinas Sernas ◽  
Mohamed Esseghir ◽  
Tai H. Kwon
Keyword(s):  
Experimental Investigation ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Extrusion Dies
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