The experimental investigation of nominal wake of ice-going ship attached with ice based on SPIV technology

被引：0
|
作者：
Luo W. [1 ]
Guo C. [1 ]
Wu T. [1 ]
Su Y. [1 ,2 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
[2] State Key Laboratory of Autonomous Underwater Vehicle, Harbin Engineering University, Harbin
来源：
Guo, Chunyu (guochunyu@hrbeu.edu.cn) | 2017年 / Chinese Academy of Sciences卷 / 47期
关键词：
Flow field characteristics; Model ice; Nominal wake; PIV measuring technology; Ship attached with ice;
D O I：
10.1360/N092016-00439
中图分类号：
学科分类号：
摘要：
This paper is based on 76000DWT Panmax Bulker with Ice Class 1B, By using PIV measuring technology and towing DANTEC PIV system, the nominal wake field in open water is measured. Bilge vortex, propeller cap vortex and hook-shaped velocity contour are all observed precisely. The results show that the flow field characteristics are in accordance with stern flow field of U-huge ship, such as KVLCC and JBC. Then the stern nominal flow field is measured as the ship is attached to ice. Axial velocity distribution, velocity vector distribution and streamline are also analyzed. The results indicate that attachment of ice load makes the stern region produce dummy thickness which is equal to the thickness of ice. The dummy thickness destroys the fine linetype design and makes the stern become V-type which is not the best stern type. The attachment of ice in the bottom and side shell lead to the disturbtion stern nominal flow field has to bear when naked hull is sailing. Turbulent boundary layer around the shell is destroyed. Non-streamlined shape of ice produces complex vortex, and the disturbtion among vortexes results in the appearance of disordered vortex structure. © 2017, Science Press. All right reserved.
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页码：738 / 748
页数：10
相关论文
共 17 条
  • [1] Corlett E.C.B., Snaith G.R., Some aspects of icebreaker design, Trans Roy Inst Naval Architects, 106, pp. 389-413, (1964)
  • [2] Enkvist E., On the Ice Resistance Encountered by Ships Operating in the Continuous Mode of Icebreaking, (1972)
  • [3] Edwards R.Y., Lewis J.W., Wheaton J.W., Et al., Full-scale and model tests of a Great Lakes icebreaker, Trans SNAME, 80, pp. 170-207, (1972)
  • [4] Johansson B.M., Makinen E., Icebreaking model tests: Systematic variation of bow lines and main dimensions of hull forms suitable for the Great Lakes, Mar Technol, 10, pp. 236-243, (1973)
  • [5] Poznyak I.I., Ionov B.P., The division of icebreaking resistance into components, Proceeding of 6th STAR Symposium, SNAME, pp. 249-252, (1981)
  • [6] Spencer D., A Standard Method for the Conduct and Analysis of Ice Resistance Model Tests, (1992)
  • [7] Jeong S.Y., Choi K.S., A review on ice resistance prediction formulas for icebreaking vessels, J Soc Naval Architects Korea, 45, pp. 513-522, (2008)
  • [8] Ice Class Regulations 2008 (Finnish-Swedish Ice Class Rules), (2008)
  • [9] Wang J., Prediction of propeller performance on a model podded propulsor in ice (propeller-ice interaction), (2007)
  • [10] Shih L.Y., Zheng Y., Constricted hydrodynamic flow due to proximate ice blockage over a blade profile in 2D, Proceedings of the 2nd International Symposium on Propeller and Cavitation, pp. 74-79, (1992)
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