Numerical study of internal flows and boundary-layer control in inlets of turbojet engines

摘要

The performance and efficiency of any turbojet engine and the aircraft propelled by that engine depend strongly upon the engine's inlet. The importance of inlets and their proper design has lead numerous investigators to use numerical methods to study details of the flow field both inside and outside of inlets. Though much progress has been made in the numerical study of flows through inlets, additional research is still needed in the areas of turbulence modeling for transonic flows and boundary layer control via bleed holes. Under NASA grant NAG 2-709, which started on 1 January 1991 and ended on 31 December 1993, research was conducted to address this issue. This final report outlines the achievements made under this grant, which were accomplished in close collaboration with Dr. W. J. Chyu of NASA - Ames Research Center.