TY - JOUR
T1 - 潜航飞行体深水超音速气体射流的流动稳定性研究
AU - Zhang, Xiaoyuan
AU - Li, Shipeng
AU - Yang, Baoyu
AU - Wang, Yong
AU - Tong, Yue
AU - Wang, Ningfei
N1 - Publisher Copyright:
© 2019, Editorial Board of Acta Armamentarii. All right reserved.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The reliability and stability of underwater solid rocket motor propulsion system are crucial to the ballistic accuracy and flight stability of submarine vehicles. The working process of the motor is the flow process of typical supersonic gaseous jets underwater. A planar vertical two-dimensional jet geometric model is established, and the detached-eddy simulation turbulence model is used to simulate and analyze the flow field of supersonic gaseous jets in deep-water, and the oscillation characteristics of parameters in the flow field are monitored and analyzed. The underlying flow mechanism due to thrust oscillation of underwater solid rocket motor is addressed. The results show that a high-frequency oscillation occurs in the gas wake of the underwater solid rocket motor, and is accompanied by a high-amplitude intermittent oscillation. The oscillation is related to the unstable motion of shock waves along the central gas path, which leads to a sharp oscillation of pressure in the tail space, ultimately causing thrust instability. The analysis of thrust oscillation characteristics indicates that the deeper the water depth is, the larger the thrust oscillation amplitude is, and the higher the frequency is; and the larger the diameter of wall at nozzle exit is, the larger the thrust oscillation amplitude is, and the higher the frequency is.
AB - The reliability and stability of underwater solid rocket motor propulsion system are crucial to the ballistic accuracy and flight stability of submarine vehicles. The working process of the motor is the flow process of typical supersonic gaseous jets underwater. A planar vertical two-dimensional jet geometric model is established, and the detached-eddy simulation turbulence model is used to simulate and analyze the flow field of supersonic gaseous jets in deep-water, and the oscillation characteristics of parameters in the flow field are monitored and analyzed. The underlying flow mechanism due to thrust oscillation of underwater solid rocket motor is addressed. The results show that a high-frequency oscillation occurs in the gas wake of the underwater solid rocket motor, and is accompanied by a high-amplitude intermittent oscillation. The oscillation is related to the unstable motion of shock waves along the central gas path, which leads to a sharp oscillation of pressure in the tail space, ultimately causing thrust instability. The analysis of thrust oscillation characteristics indicates that the deeper the water depth is, the larger the thrust oscillation amplitude is, and the higher the frequency is; and the larger the diameter of wall at nozzle exit is, the larger the thrust oscillation amplitude is, and the higher the frequency is.
KW - Expansion characteristic
KW - Movement and reconstruction of shock wave
KW - Submarine vehicle
KW - Supersonic gaseous jet
KW - Thrust oscillation
UR - http://www.scopus.com/inward/record.url?scp=85078524547&partnerID=8YFLogxK
U2 - 10.3969/j.issn.1000-1093.2019.12.001
DO - 10.3969/j.issn.1000-1093.2019.12.001
M3 - 文章
AN - SCOPUS:85078524547
SN - 1000-1093
VL - 40
SP - 2385
EP - 2398
JO - Binggong Xuebao/Acta Armamentarii
JF - Binggong Xuebao/Acta Armamentarii
IS - 12
ER -