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A Study on Optimal Design of the Fighter Igloo Diffuser  

Yoon, Yong-Hyun (국립순천대학교 기계우주항공공학부)
Publication Information
Journal of the Korean Society for Aviation and Aeronautics / v.18, no.4, 2010 , pp. 86-91 More about this Journal
Abstract
New Design configurations of the fighter aircraft igloo diffuser were studied based on the closed ventilation type in contrast to the conventional open distribution type. To validate the enhanced and safe performance, the exhaust flow patterns of the two igloo diffuser types were simulated by both experimental and computational approaches as design tools. Flow visualizations were conducted to investigate the exhaust flow patterns in experimental approach. In addition, the commercial code called Fluent was used to calculate flow field properties. Computational simulations provided detailed parametric studies that significantly reduced the amount of experimentation necessary to alter the design parameters of the existing fighter igloo diffuser. The closed ventilation type of the igloo diffuser was shown the better results.
Keywords
Igloo diffuser; Optimal design; Open distribution type; Closed ventilation type; Flow visualization;
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