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Now showing items 1-10 of 15
Reduction of Unsteady Stator-Rotor Interaction by Trailing Edge Blowing Using MEMS Based Microvalves
(Virginia Tech, 1999-04-16)
This research performs an experimental study of a trailing edge blowing system that can adapt to variations in flow parameters and reduce the unsteady stator-rotor interaction at all engine operating conditions. The fan ...
Noise Reduction in an Axisymmetric Supersonic Aircraft Inlet using Trailing Edge Blowing
(Virginia Tech, 1998-01-21)
Acoustic experiments were conducted in an anechoic chamber with a 1/14th scale model of a supersonic aircraft engine inlet using Trailing Edge Blowing (TEB) to reduce the engine fan noise from a turbofan propulsion simulator ...
Effects of Mach Number and Flow Incidence on Aerodynamic Losses of Steam Turbine Blades
(Virginia Tech, 1997-04-15)
An experiment was conducted to investigate the aerodynamic losses of two high-pressure steam turbine nozzles (526A, 525B) subjected to a large range of incident angle and exit Mach number. The blades were tested in a 2D ...
Development of a data reduction method for a high frequency angle probe
(Virginia Tech, 1987-03-15)
<p>A data reduction method has been developed and tested for a high frequency angle probe. The angle probe is designed for unsteady aerodynamic measurements in transonic cryogenic wind tunnels. The probe measures ...
The correlation of randomness with high tip losses in an axial flow fan stage
(Virginia Tech, 1991-04-19)
<p>The results of a test program incorporating a dual hot wire aspirating probe to radially survey the by-pass duct downstream of an axial flow fan stage are presented. The probe measures time resolved total temperature ...
Turbulence measurements and noise generation in a transonic cryogenic wind tunnel
(Virginia Tech, 1989-04-15)
<p>A high-frequency combination probe was used to measure dynamic flow quality in the test section of the NASA Langley 0.3-m Transonic Cryogenic Tunnel. The probe measures fluctuating stagnation (total) temperature and ...
A modified Baldwin-Lomax turbulence model for turbomachinery wakes
(Virginia Tech, 1991-01-08)
A critical evaluation of the Baldwin-lomax (Bl) turbulence model for shock/shear layer interactions, reversed flow, and curved, asymmetric wakes is made. No general definition for reference line is available for wakes, ...
A study of the large-scale structure in a supersonic slot injected flow field
(Virginia Tech, 1988-06-15)
The use of hot-wire anemometry in studying supersonic slot injection into a supersonic flow
(Virginia Tech, 1988-02-05)
Tangential supersonic slot injection (M = 1.7) of air into a supersonic air stream (M = 2.91) was studied with a dual hot wire probe. This probe was used to simultaneously determine total temperature and mass flux. Mean ...
Reduced fan noise radiation from a supersonic inlet
(Virginia Tech, 1993-04-15)