Investigation of the tip clearance flow inside and at the exit of a compressor rotor passage-part I: mean velocity field

Journal Article · Sat Jan 01 04:00:00 EST 1983 · J. Eng. Power; (United States)

DOI:https://doi.org/10.1115/1.3227389· OSTI ID:6224995

Pandya, A; Lakshminarayana, B

This paper reports on an experimental study of the nature of the tip clearance flow in a moderately loaded compressor rotor. The measurements reported were obtained using a stationary two-sensor, hot-wire probe in combination with an ensemble averaging technique. The flow field was surveyed at various radial locations and at ten axial locations, four of which were inside the blade passage in the clearance region and the remaining six outside the passage. Variations of the mean flow properties in the tangential and the radial directions at various axial locations were derived from the data. Variation of leakage velocity at different axial stations and the annulus-wall boundary layer profiles from passage-averaged mean velocities were also estimated. The results indicate that there exists a region of strong interaction of the leakage flow with the annulus-wall boundary layer at halfchord. The profiles are well-behaved beyond this point. The rotor exit flow is found to be uniform beyond 3/4 blade chord downstream of the rotor trailing edge.

• Research Organization: Presently at Memorex Corporation, RTC Division, Santa Clara, California
• OSTI ID: 6224995
• Journal Information: J. Eng. Power; (United States), Journal Name: J. Eng. Power; (United States) Vol. 105:1; ISSN JEPOA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
420400 -- Engineering-- Heat Transfer & Fluid Flow
ANGULAR DISTRIBUTION
ANNULAR SPACE
BOUNDARY LAYERS
COMPRESSOR BLADES
COMPRESSORS
CONFIGURATION
DATA
DISTRIBUTION
EMPLACEMENT
EXPERIMENTAL DATA
FLOW RATE
FLUID FLOW
FLUID MECHANICS
FLUID-STRUCTURE INTERACTIONS
FLUIDS
HOT-WIRE GAGES
INFORMATION
LAYERS
LEAKS
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICS
NUMERICAL DATA
PRESSURE GAGES
PROBES
ROTORS
SPACE
SPATIAL DISTRIBUTION
VARIATIONS
VELOCITY
WORKING FLUIDS