Unsteady Transonic Flow Analysis for Low Aspect Ratio, Pointed Wings

AIAA Journal ◽  
1974 ◽  
Vol 12 (4) ◽  
pp. 516-522 ◽  
Author(s):  
K. R. KIMBLE ◽  
D. D. LIU ◽  
S. Y. ROU ◽  
J. M. WU
Keyword(s):  
Aspect Ratio ◽  
Transonic Flow ◽  
Flow Analysis ◽  
Low Aspect Ratio

Performance Prediction for High Turning Low Aspect Ratio Stator Cascades in the Transonic Regime

1970 ◽  
Vol 92 (4) ◽  
pp. 390-398
Author(s):  
H. F. L. Griepentrog
Keyword(s):  
Boundary Layer ◽  
Aspect Ratio ◽  
Flow Field ◽  
Performance Prediction ◽  
Transonic Flow ◽  
Secondary Flows ◽  
Compressor Stage ◽  
Low Aspect Ratio ◽  
Aspect Ratios ◽  
Boundary Layer Interaction

This paper describes a method for the prediction of the transonic flow field in a high solidity, high turning cascade, suitable for use as stator of a shock-in-rotor supersonic compressor stage. Effects of shock boundary layer interaction is taken into account by empirical correlation, valid for blade aspect ratios below unity. Use of partial slots for reduction of the secondary flows is briefly discussed and a correlation on slot efficiency is presented.

An Application of 3-D Viscous Flow Analysis to the Design of a Low-Aspect-Ratio Turbine

1979 ◽  
Author(s):  
H. C. Liu ◽  
T. C. Booth ◽  
W. A. Tall
Keyword(s):  
Aspect Ratio ◽  
Viscous Flow ◽  
Flow Analysis ◽  
Optimization Procedure ◽  
Tip Clearance ◽  
Specific Work ◽  
Turbine Stage ◽  
Gas Generator ◽  
Low Aspect Ratio

Previously reported cascade test results verified and provided a calibration of the 3-D viscous flow analysis. This paper describes the subsequent AFAPL-sponsored technology program in which the 3-D viscous flow computer program was used to optimize the low-aspect-ratio stator of a high-work turbine stage. The optimization procedure, in conjunction with the radial distribution of energy extraction, led to innovative-but-realistic blading for advanced gas generator turbines. A turbine stage was tested with this stator, in conjunction with an appropriate rotor design. The total-to-total design-point efficiency — 92 percent at 1-percent tip clearance — was achieved at 31.83 Btu/lbm specific work. In addition to stage tests, separate stator tests were conducted including a measurement of total pressure loss and stator reaction torque, which provided baseline data to assess interaction effects during stage testing with stator reaction measurements “in vivo.”

Development of an Ion Beam Probe System for Potential Measurement in the Low Aspect-Ratio Torus Experiment Device

2012 ◽  
Vol 132 (7) ◽  
pp. 567-573
Author(s):  
Hitoshi Tanaka ◽  
Shota Omi ◽  
Jun Katsuma ◽  
Yurie Yamamoto ◽  
Masaki Uchida ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Ion Beam ◽  
Potential Measurement ◽  
Low Aspect Ratio ◽  
Probe System ◽  
Experiment Device
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