Single and multiple jet impingement heat transfer on rotating disks

Conference · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6057648

Metzger, D E; Partipilo, V A

In some gas turbine engine designs cooling air jets are directed at the rotating disk in an atempt to enhance the convection coefficients and reduce the amount of gas flow required for cooling. The jet-impingement scheme is particularly attractive for achieving intense cooling at a specific radial location, such as the blade attachment region. In earlier single-jet studies, the interaction between an impinging jet and rotating disk has been found to involve a flow regime transition. The present study extends the previously acquired data base with new results from both heat-transfer and flow-visualization testing, including effects of hub size, jet travel distance, and the number of jets. Results include a superposition scheme for predicting heat transfer for multiple jets and a criterion for the minimum amount of flow required through each jet nozzle to assure enhancement of the disk convection. 8 references.

• OSTI ID: 6057648
• Report Number(s): AIAA-Paper-89-0174; CONF-890123-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
CONVECTION
COOLING
DATA BASE MANAGEMENT
DESIGN
ENERGY TRANSFER
ENGINES
FLOW VISUALIZATION
FLUID FLOW
GAS FLOW
GAS TURBINE ENGINES
HEAT ENGINES
HEAT TRANSFER
INTERNAL COMBUSTION ENGINES
JETS
MANAGEMENT
MASS TRANSFER
NOZZLES
TURBINE BLADES