| SHAN Yong, CHEN Zhu，SHANG Shou-tang，SHAO Wan-ren, DENG Hong-wei.Aerodynamic and Infrared Radiation Characteristics Numerical Simulation on Single Expansion Ramp Nozzle within Aircraft[J].航空发动机,2014,40(2):1-5 |
| Aerodynamic and Infrared Radiation Characteristics Numerical Simulation on Single Expansion Ramp Nozzle within Aircraft |
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| Key Words:single expansion ramp nozzle infrared radiation exhaust system numerical simulation aeroengine stealth |
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| Abstract:Single Expansion Ramp Nozzle (SERN) is a new style exhaust nozzle which has a lot of advantages. It can suppress the infrared radiation, reduce the radar cross section, decrease the resistance of the nozzle's after body, reduce the whole weight. The non-symmetry of the nozzle can improve the agility and maneuverability for the planes. Based on the computational fluid dynamics/infrared radiation (CFD/IR) numerical calculations, using standard ?资-?着 turbulent model and standard wall functions, three kinds of nozzle within the aircraft which were axis symmetry nozzle, single expansion ramp nozzle and single expansion ramp nozzle with cooling were performed to simulate the infrared radiation distribution of the plume and exhaust system. The results show that the SERN has the ability of shield the high temperature parts located in the nozzle. It can suppress the infrared radiation by 60% of the exhaust system |
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