Drag Reduction Optimization for Hypersonic Blunt Body with Aerospikes
學年 105
學期 1
出版（發表）日期 2017-01-01
作品名稱 Drag Reduction Optimization for Hypersonic Blunt Body with Aerospikes
作品名稱（其他語言）
著者 Tung Wan; Chin-Min Liu
單位
出版者
著錄名稱、卷期、頁數 Journal of Aeronautics & Aerospace Engineering 6(4)
摘要 Orion MPCV (Multi-Purpose Crew Vehicle) is one of the state-of-the-art manned space vehicles nowadays which will engage in the deep space missions in the near future. Besides, Orion spacecraft is a kind of blunt body, thus the phenomena concerning the high levels of pressure drag and aerodynamic heating are experienced during the atmospheric re-entry process. Pressure drag and aeroheating stirred by the shock wave is the main challenge of hypersonic flight. Therefore, both aerospikes and aerodisks can be efficiently utilised as the approach for drag reduction. In this thesis, we would research the effect of different geometric shapes of aerospikes with different disk gap widths on drag reduction. Accordingly, we implemented a series of Computational Fluid Dynamics (CFD) simulation work to investigate the behaviour as to hypersonic flow over aerospiked blunt bodies. Moreover, the drag reduction efficiency of spiked blunt bodies would be acquired via Kriging method. For the models we studied, we found that the drag on the spiked blunt bodies is much lower than the spike off one. The drag reduction efficiency especially would be predominated by the scale of recirculation zone, which increases as both the spike length and the gap size of aerodisk increase.
關鍵字 Hypersonic;Blunt Body;Aerospike;Aerodisk;Drag Reduction;k-ω Turbulence Model;Kriging Method
語言 en_US
ISSN 2168-9792
期刊性質 國外
收錄於 EI ESCI
產學合作
通訊作者 Tung Wan
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/121593 )