Investigation of the tip clearance flow inside and at the exit of a compressor rotor passage-part II: turbulence properties

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

DOI:https://doi.org/10.1115/1.3227375· OSTI ID:6055831

Pandya, A; Lakshminarayana, B

The flow in the tip clearance region of a compressor rotor is highly turbulent due to the strong interaction of the leakage flow with the annulus wall boundary layer. This paper deals with the turbulence properties of the flow in the tip clearance region of a moderately loaded compressor rotor. The experimental results reported in this paper were obtained using a two-sensor hot-wire probe in combination with an ensemble averaging technique. Blade-to-blade distribution of the axial and tangential turbulence intensities at various radial locations and ten axial locations (four inside the blade passage and the remaining six outside the passage) were derived from this data. Isointensity contours in the clearance region at various radial locations were also obtained from the experimental data. A region of very high turbulence intensities was indicated at the half-chord location from these results. The turbulence intensity profiles also indicated that the leakage flow travels toward the midpassage before rolling up. The turbulence is almost isotropic beyond three-quarter chord downstream of the trailing edge.

• Research Organization: Memorex Corporation, RTC Division, Santa Clara, California
• OSTI ID: 6055831
• 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
BOUNDARY LAYERS
COMPRESSOR BLADES
COMPRESSORS
CONFIGURATION
DATA
DISTRIBUTION
EMPLACEMENT
EXPERIMENTAL DATA
FLUID FLOW
FLUID MECHANICS
FLUID-STRUCTURE INTERACTIONS
FLUIDS
HOT-WIRE GAGES
INFORMATION
ISOTROPY
LAYERS
LEAKS
MEASURING INSTRUMENTS
MEASURING METHODS
MECHANICS
NUMERICAL DATA
PRESSURE GAGES
PROBES
ROTORS
SPATIAL DISTRIBUTION
TURBULENCE
TURBULENT FLOW
WORKING FLUIDS