Study of the pressure distribution on nozzle inner wall

被引：0
作者：
Yang Y. [1 ]
Feng F. [2 ]
Zhu Y. [3 ]
Luo X. [3 ]
机构：
[1] College of Engineering, Ocean University of China
[2] Department of Mechatronics Engineering, The Academy of Armored Force Engineering
[3] School of Mechanical Science and Engineering, Huazhong University of Science and Technology
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2011年 / 47卷 / 16期
关键词：
Isobaric surface; Nozzle; Pressure distribution; Water jet propulsion;
D O I：
10.3901/JME.2011.16.182
中图分类号：
学科分类号：
摘要：
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. © 2011 Journal of Mechanical Engineering.
引用
收藏
页码：182 / 186
页数：4
相关论文
共 12 条
  • [1] Allison J., Marine water jet propulsion, Transactions Society of Naval Architects and Marine Engineers, 101, pp. 275-335, (1993)
  • [2] Allison J., Stricker J.G., Athavale M.M., Et al., Modern tools for waterjet pump design and recent advances in the field, RINA International Conference on Waterjet Propulsion, Latest Developments, pp. 1-19, (1998)
  • [3] Jin P., Ship Water Jet Propulsion, (1986)
  • [4] Etter R.J., Krishnamoorthy V., Scherer J.O., Model testing of water jet propelled craft, Proceedings of 19th ATTC, pp. 783-806, (1987)
  • [5] Kruppa C.F.L., Aspects of high-speed propulsion, Proceedings of International Symposium on Propulsions and Cavitation, pp. 22-25, (1992)
  • [6] Oh H.W., Yoon E.S., Kim K.S., Et al., A practical approach to the hydraulic design and performance analysis of a mixed-flow pump for marine waterjet propulsion, Journal of Power and Energy, Proc. IMechE, Part A, 217, 6, pp. 659-664, (2003)
  • [7] Paek Y.H., Kim K.S., Ahn J.W., Et al., Experimental performance analysis of the mixed-type waterjet pump in cavitation tunnel, 2nd PNU International Colloquium on Waterjet, pp. 10-11, (2002)
  • [8] Miller E.R., Waterjet propulsion systems performance analysis, Proceedings of the 18th General Meeting of the ATTC, pp. 167-199, (1977)
  • [9] Yang Y., Mid/high pressure water jet propulsion and optimization design of the nozzle, (2007)
  • [10] Yang Y.S., Zhu Y.Q., Liu Y.S., Et al., A simulation study on the back thrust of water jet, Proceedings of the 6th International Conference on Fluid Power Transmission and Control, pp. 563-568, (2005)
12