Numerical Investigation of Separated Plug Nozzle Flow

作     者：张扬军 诸葛伟林 郑孟伟 张宝宁 李字明 王瑞发 

作者机构：Department of Automotive EngineeringTsinghua UniversityBeijing 100084China 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2000年第5卷第4期

页      面：391-394页

学科分类：08[工学] 080103[工学-流体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the National Natural Science Foundationof China(No.19802011) 

主　　题：plug nozzle rocket engine separated flo? 

摘      要：Modern analysis techniques that provide improved viability have enabled further investigation of plug nozzle rocket engines as advanced launch vehicle concepts. A plug nozzle for future single-stage-to-orbit vehicles in China has been designed, and the flow field in the plug nozzle has been studied numerically for different ambient pressures. Calculations were performed by solving the Navier-Stokes equations for an ideal gas. Turbulence is modelled using the k-ε turbulence model. The advantages of the plug nozzles are the external expansion, which automatically adapts to external pressure variations, and the short compact design for high expansion ratios. Expansion waves, compression shocks, and the separated base flow dominate the flow structures and affect the plug nozzle rocket engine performance.[