Numerical Study on Cavitation Characteristics of Propeller Under Oblique Flow Conditions

doi:10.16183/j.cnki.jsjtu.2024.124

Abstract

Abstract:

To study the cavitation characteristics of propellers under oblique flow conditions and quantitatively analyze the blade cavitation area, this paper takes the PC456 propeller model as the research object. Based on the OpenFOAM platform, the cavitation performance of the PC456 propellers under oblique flow is numerically calculated using the SST k-ω turbulence model and Schnerr-Sauer cavitation model. The results show that the influence of oblique flow on the hydrodynamic performance of the propeller cavitation increases with the increase of the oblique flow angle. Within the phase range of [-90°, 40° ], the cavitation area of the blade reaches its maximum at the -20° phase, and as the oblique angle increases, the amplitude of the change in bubble area also increases. In addition, the numerically predicted cavitation areas are in good agreement with the experimental results, especially under conditions of low cavitation numbers, which validates the effectiveness of the numerical method used in this study.

Key words: propeller cavitation, oblique flow, OpenFOAM, cavitation model

CLC Number:

U664.33

YU Kai, CHENG Chen, SHI Guangyu, LIU Dengcheng, WANG Chao. Numerical Study on Cavitation Characteristics of Propeller Under Oblique Flow Conditions[J]. Journal of Shanghai Jiao Tong University, 2026, 60(3): 408-417.

Figures/Tables 17

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参数	取值
螺旋桨直径,D/m	0.250
0.7R处螺距比,(P/D)₀_.₇_R	0.700
盘面比,A_E/A₀	0.559
毂径比,d/D	0.147
0.7R处弦长,C₀_.₇_R/mm	77.288
0.7R处最大厚度,T₀_.₇_R/mm	4.125
侧斜角,θ_s/(°)	20

仪器名称	型号	量程	不确定度/%
动力仪	H51	推力:3 000 N	0.2
		转矩:200 N·m	0.2
压力测量变送器	3151DP	0.2 MPa	0.3
水速测量变送器	1151DP	0.3 MPa	0.3
频率计	FC4-490F	10.0 MHz	0.1
直流放大器	DH3840H	0~10.0 V	—
空气含量仪	Van-slyke	0.1~1.0	0.2
实时信号分析仪	SP-01	0~80 kHz	—

网格	网格尺寸		网格总数
网格	桨叶表面	旋转区域	网格总数
G1	0.004 6D	0.018 4D	1 220 201
G2	0.003 4D	0.013 6D	2 723 755
G3	0.002 6D	0.010 4D	4 860 005

网格	K_T			10K_Q
网格	模拟值	实验值	误差/%	模拟值	实验值	误差/%
G1	0.172 9	0.169 1	2.23	0.211 3	0.202 8	4.17
G2	0.172 0	0.169 1	1.75	0.209 0	0.202 8	3.06
G3	0.171 4	0.169 1	1.35	0.207 6	0.202 8	2.38

α/(°)	σ_v	K_T			10K_Q
α/(°)	σ_v	模拟值	实验值	误差/%	模拟值	实验值	误差/%
0	7.27	0.169 5	0.166 4	1.86	0.206 2	0.200 8	2.69
	8.49	0.169 7	0.171 6	-1.11	0.206 6	0.204 9	0.83
	10.53	0.169 8	0.173 8	-2.30	0.206 5	0.207 1	-0.29
	常压	0.170 7	0.173 5	-1.61	0.207 4	0.208 0	-0.29
7	7.27	0.169 3	0.162 2	4.39	0.206 0	0.196 5	4.82
	8.49	0.171 4	0.169 1	1.35	0.207 6	0.202 8	2.38
	10.53	0.171 8	0.176 4	-2.61	0.208 5	0.209 7	-0.55
	常压	0.172 0	0.178 9	-3.86	0.209 3	0.210 6	-0.62
12	7.27	0.171 3	0.168 1	1.90	0.208 8	0.201 5	3.65
	8.49	0.174 6	0.175 7	-0.61	0.211 0	0.209 1	0.91
	10.53	0.174 6	0.183 6	-4.90	0.211 3	0.216 2	-2.27
	常压	0.174 7	0.186 3	-6.23	0.211 3	0.217 2	-2.67
17	7.27	0.172 8	—	—	0.210 0	—	—
	8.49	0.177 7	—	—	0.213 6	—	—
	10.53	0.178 4	—	—	0.213 6	—	—
	常压	0.178 2	—	—	0.213 5	—	—