对转式全回转舵桨的立柱优化研究

刘振华; 张燕; 贺俊松

doi:10.19693/j.issn.1673-3185.03313

对转式全回转舵桨的立柱优化研究

doi: 10.19693/j.issn.1673-3185.03313

上海倍豪船舶科技有限公司，上海 200439

基金项目: 上海市科技计划项目（21SQBS02100）。

详细信息

作者简介:
刘振华，女，1990年生，硕士，工程师。研究方向：特种推进器的水动力性能研究。E-mail：779745445@qq.com

张燕，女，1980年生，硕士，工程师。研究方向：船舶特种推进器的总体研究。E-mail：zhangyan@powermaster-marine.com

贺俊松，男，1979年生，博士，高级工程师，研究方向：船舶特种推进器水动力性能研究。E-mail：hejunsong-@powermastermarine.com

通信作者:
刘振华

中图分类号: U664.3
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出版历程
- 收稿日期: 2023-04-04
- 修回日期: 2023-06-05
- 网络出版日期: 2023-07-28

Research on strut optimization of azimuth thruster with contra-rotating propellers

Shanghai Powermaster Marine Co., Ltd., Shanghai 200439, China

对转式全回转舵桨的立柱优化研究由刘振华，等创作，采用知识共享署名4.0国际许可协议进行许可。

摘要

摘要: 基于雷诺平均方法与k-ω湍流模型，对不同立柱型式的对转式全回转舵桨分别进行模型尺度和实尺度下的水动力性能预报。研究结果表明，立柱前缘削薄并整体前移的优化方案，使整个舵桨的敞水效率提高1.01%；立柱采用扭曲设计，且切面引入拱度的优化方案，使得敞水效率提高1.15%。通过研究流场特性与后桨伴流监测，发现优化后的立柱可以改善立柱尾部的流动分离现象，提高后桨吸收前桨的尾涡能量，增加后桨流入量，对于提高对转式全回转舵桨的推进性能具有工程实用意义；另外，通过比较模型尺度与实尺度的研究结果，发现模型尺度的流动分离比实尺度严重。
- 对转式全回转舵桨 /
- 立柱优化 /
- 水动力性能 /
- 模型尺度 /
- 实尺度
Abstract: RANS method and k-ω turbulence model are applied to predict the hydrodynamic performance of Azimuth thruster with Contra-Rotating Propellers for different strut design at model scale and real scale in open water. The result shows that the optimization scheme of strut moving forward and leading edge thinning increases the open water efficiency of the thruster by 1.01%; The optimization scheme of strut adopting twist design as well as strut section introducing camber increases open water efficiency by 1.15%. Flow field observation and wake fraction monitoring of rear propeller shows that the optimized strut can reduce the flow separation at the stern of strut, improve the rear propeller absorption of the wake vortex energy of the front propeller, and increase the inflow of the rear propeller, which is of engineering practical significance for improving the propulsion performance of the Azimuth thruster with Contra-Rotating Propellers. In addition, the flow separation of model scale is more serious than real scale on research of the comparison between model scale and real scale.
- Azimuth thruster with Contra-Rotating Propellers /
- strut optimization /
- hydrodynamic performance /
- model scale /
- real scale

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图 1 对转舵桨模型 (CR16)

Figure 1. CRP model (CR16)

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图 2 CR16，CR17，CR17.1和CR17.2的对比图

Figure 2. Contrast diagram of CR16, CR17, CR17.1, CR17.2

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图 3 计算域示意图

Figure 3. Computational domain diagram

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图 4 CR16, CR17立柱后的流动分离对比图

Figure 4. Contrast diagram of flow separation behind strut of CR16,CR17

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图 5 CR17.1, CR17.2立柱后的流动分离对比图

Figure 5. Contrast diagram of flow separation behind strut of CR17.1, CR17.2

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图 6 后桨轴向伴流

Figure 6. Axial wake fraction of rear propeller

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图 7 后桨切向伴流

Figure 7. Tangential wake fraction of rear propeller

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表 1 前桨与后桨的主要参数

Table 1. Main parameter of front and rear propeller

项目	符号	前桨		后桨
项目	符号	实尺度	模型尺度	实尺度	模型尺度
缩尺比	λ	1	21	1	21
叶数	Z	5		4
直径/m	D	4.2	0.2	3.7	0.175 2
弦长/m	C_0.7	1.098 3	0.052 3	1.2327	0.058 7
螺距比	P_0.7/D	1.169 2		1.4121
盘面比	A_E/A₀	0.584 6		0.605
毂径比	d_h/D	0.23		0.203
旋向	-	右旋		左旋

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表 2 模拟工况

Table 2. Operating condition

CR16, CR17, CR17.1, CR17.2	符号	实尺度	模型尺度	CR16模型试验
缩尺比	λ	1	21	21
速度/(m·s⁻¹)	V	9.9819	2.4583	2.4583
前、后桨转速/(r·s⁻¹)	n	2.417	12.500	12.500
进速系数	J	0.9833	0.9833	0.9833

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表 3 敞水性能结果

Table 3. Result of open water characteristics

缩尺比	优化方案	前桨 K_T1	前桨 10K_Q1	后桨 K_T2	后桨 10K_Q2	舵桨装置 K_T	舵桨装置 10K_Q	效率 η
λ=1	CR16	0.174	0.312	0.089	0.182	0.223	0.494	0.705
	CR17	0.174	0.311	0.092	0.191	0.229	0.502	0.712
	CR17.1	0.174	0.311	0.125	0.240	0.249	0.551	0.707
	CR17.2	0.174	0.311	0.112	0.220	0.242	0.531	0.713
	CR16试验值	--	--	--	--	0.220 5	0.574 6	--
λ=21	CR16	0.166	0.320	0.107	0.215	0.220	0.534	0.644
	CR17	0.168	0.323	0.092	0.198	0.212	0.521	0.637
	CR17.1	0.170	0.324	0.096	0.206	0.215	0.530	0.634
	CR17.2	0.166	0.320	0.103	0.214	0.221	0.534	0.647

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