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JOURNAL OF PROPULSION AND POWER Vol. 21, No. 1, JanuaryFebruary 2005
 

Summary: JOURNAL OF PROPULSION AND POWER
Vol. 21, No. 1, January­February 2005
Prediction of High-Pressure Turbine Main-/Secondary-Air
System Flow Interaction
Roger L. Davis
University of California, Davis, Davis, California 95616
Juan J. Alonso
Stanford University, Stanford, California 94305
Jixian Yao
General Electric Global Research Center, Niskayuna, New York 12309
and
Roger Paolillo§
and Om P. Sharmaś
Pratt and Whitney, East Hartford, Connecticut 06108
The results from a steady, viscous flow simulation of the main flowpath of a modern jet engine transonic high-
pressure turbine, transition duct, and first vane of the low-pressure turbine, coupled with the secondary-air system
under the high-pressure turbine, is presented. The secondary-air system configuration includes the lower cavity
near the centerline, the mid-cavity with the tangential onboard injection nozzle and pump, and the upper rim
cavity. In addition, the flow through the inner tangential onboard injection seal and labyrinth seals that separate
the cavities is included. The purpose of this investigation is to determine the feasibility of the use of computational

  

Source: Alonso, Juan J. - Department of Aeronautics and Astronautics, Stanford University

 

Collections: Engineering