Aerodynamic Design Investigation on Inlet-Exhaust System Using Super-Ellipse Method

Abstract:

Generally, the shape index n is selected in a form when design the inlet-exhaust system using traditional super-ellipse method. Unfortunately, this selection process is time-consuming and not precise enough, so the cross-section designed by super-ellipse method may get distortions easily, which influences the inner flow and the total pressure of the inlet-exhaust system greatly. Associating the shape index n with the variation pattern of the inlet-exhaust cross-section, an improved super-ellipse method is developed to design the inlet-exhaust system. This method ensures the precision and uniqueness of shape index n for any cross-section in an adaptive way. The numerical simulation results show that the S-shape inlet designed using this method has high total pressure recovery coefficient and lower distortion coefficient, the S-shaped nozzle has high total pressure recovery coefficient and thrust coefficient.

• Periodical: Applied Mechanics and Materials (Volumes 246-247)
• Pages: 446-450
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.246-247.446
• Online since: December 2012
• Authors: Yue Feng Li, Qing Zhen Yang, Xue Jiao Deng
• Keywords: Aerodynamic Characteristic, Configuration Design, Inlet-Exhaust System, Super-Ellipse Method, Thrust Coefficient, Total Pressure Recovery Coefficient

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