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contributor authorYe Sun
contributor authorZhen Liu
contributor authorJun Li
contributor authorDike Hu
contributor authorDeli Liang
contributor authorTianjiao Dang
date accessioned2024-04-27T22:39:35Z
date available2024-04-27T22:39:35Z
date issued2024/03/01
identifier other10.1061-JAEEEZ.ASENG-5106.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4297191
description abstractDuring the launch phase of a multinozzle rocket, the high-level noise induced by the supersonic jet ejected from the nozzles significantly affects the structural safety of the rocket and the reliability of the instruments. Therefore, it is important to predict and suppress the multinozzle rocket jet noise. This study proposes a numerical analysis method that uses the detached eddy simulation model combined with species transport equations, the discrete-phase model, and the acoustic analogy method (FW-H). It aims at a four-nozzle liquid rocket to predict jet and noise environments while considering the physical effect of evaporation and the influence of the launch pad structure. The proposed method was verified by comparing the single-nozzle jet simulation and experiment results. The prediction of the supersonic jet flow field and noise environment at different lift-off heights of the rocket was completed. An annular water jet noise-reduction system was designed to suppress the noise environment at different heights by single-deck and double-deck water injections. The noise attenuation effect of the water injection system was better when the lift-off altitude increased. And the noise suppression effect of the double-deck water injection system was more comprehensive than that of the single-deck water injection system. Furthermore, the reasons for the difference in noise reduction by different layers of water injection were analyzed in detail.
publisherASCE
titleNoise Reduction of Multinozzle Rocket Jet by Multideck Water Injection
typeJournal Article
journal volume37
journal issue2
journal titleJournal of Aerospace Engineering
identifier doi10.1061/JAEEEZ.ASENG-5106
journal fristpage04024002-1
journal lastpage04024002-16
page16
treeJournal of Aerospace Engineering:;2024:;Volume ( 037 ):;issue: 002
contenttypeFulltext


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