• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2011, Vol. 47 ›› Issue (16): 182-186.

• 论文 • 上一篇    下一篇

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喷嘴内壁压力分布的研究

杨友胜;冯辅周;朱玉泉;罗小辉   

  1. 中国海洋大学工程学院;装甲兵工程学院机械电子工程系;华中科技大学机械科学与工程学院
  • 发布日期:2011-08-20

Study of the Pressure Distribution on Nozzle Inner Wall

YANG Yousheng;FENG Fuzhou ZHU Yuquan;LUO Xiaohui   

  1. College of Engineering, Ocean University of China Department of Mechatronics Engineering, The Academy of Armored Force Engineering School of Mechanical Science & Engineering, Huazhong University of Science & Technology
  • Published:2011-08-20

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摘要： 喷嘴是能量转换部件，其效率直接影响航行器的总体性能，如续航能力、航速等。根据喷嘴内部等压面的特征，运用能量守恒定理，建立喷嘴内壁面压力分布模型。对两种喷嘴(圆柱、圆锥)内壁面压力分布进行仿真与试验研究。比较分析模型、仿真和试验的结果。因结果可知：① 内壁面压力分布在接近喷嘴时急剧下降，且随孔径的增加，壁面压力变化率减小；② 在接近喷嘴时，圆柱喷嘴壁面压力分布变化大，而圆锥喷嘴的相对缓和；③ 壁面压力分布模型能较好的反映出壁面压力分布规律。

关键词: 等压面, 喷水推进, 喷嘴, 压力分布

Abstract: The nozzle, of which the efficiency has direct effects on the performance (such as endurance and speed) of watercraft, is an energy conversion component. Based on the features of isobaric surfaces, a pressure distribution model of the nozzle inner wall is built by utilizing the principle of conservation of energy. Simulation and experimental studies are carried out to investigate the inner wall pressure distributions of two kinds of nozzles (cylindrical nozzle, conical nozzle). Comparison analyses are performed among the results of the model, the simulation and the experiment. The results show ① the pressure decreases sharply near the outlet of the nozzle and the larger the diameter, the smaller the pressure gradient; ② the pressure gradient of the cylindrical nozzle is larger than that of the conical nozzle; ③ the pressure distribution can be well reflected by the model.

Key words: Isobaric surface, Nozzle, Pressure distribution, Water jet propulsion

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