Ice Floe Trajectory Under the Action of Propeller Pumping

doi:10.16183/j.cnki.jsjtu.2019.365

Abstract

Abstract:

In order to study the influence of propeller pumping action on ice trajectory during the process of ice propeller interference, this paper built a motion trajectory measurement platform based on circulating water tank, combining high-speed camera and the Photron FASTCAM Analysis (PFA) method, and tested and analyzed the trajectory of ice at different propeller rotation speeds. After systematic analysis of the test results, it is found that when the propeller rotates at a high speed and the flow velocity is small, the pumping action effect is obvious, which apparently changes the model ice trajectory and even makes the ice and propeller collide. When the model ice volume is large and the water flow velocity is fast, the propeller pumping action effect is small, and it is difficult for the pumping action effect to change the ice trajectory because of the influence of the water flow velocity, which has little effect on the model ice motion trajectory.

Key words: ice-propeller interference, circulating water tank, motion trajectory, pumping action

CLC Number:

U661.31

WANG Chao, YANG Bo, WANG Chunhui, GUO Chunyu, XU Pei. Ice Floe Trajectory Under the Action of Propeller Pumping[J]. Journal of Shanghai Jiao Tong University, 2021, 55(5): 505-512.

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冰级	冰的状况 (基于WMO冰术语)	最大冰厚度/mm	模型冰尺寸/mm
冰级	冰的状况 (基于WMO冰术语)	最大冰厚度/mm	厚	宽	长
PC7	薄当年冰,夹旧冰	700	35	70	105
PC7	薄当年冰第2阶段	500	25	50	75
PC7	薄当年冰第1阶段	300	15	30	45

冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		轴向位/mm
冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		x轴		y轴		z轴
45×30×15	100		0.6		200		0		20
45×30×15	200		0.6		200		0		20
45×30×15	300		0.6		200		0		20
45×30×15	400		0.6		200		0		20
45×30×15	500		0.6		200		0		20
45×30×15	600		0.6		200		0		20

冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		轴向位/mm
冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		x轴		y轴		z轴
45×30×15	600		0.2		200		0		20
45×30×15	600		0.6		200		0		20
45×30×15	600		1.0		200		0		20

冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		轴向位/mm
冰块尺寸 (长×宽×高)/ (mm×mm×mm)		螺旋桨转速/ (r·min^-1)		来流速度/ (m·s^-1)		x轴		y轴		z轴
105×70×35	600		0.6		200		0		20
75×50×25	600		0.6		200		0		20
45×30×15	600		0.6		200		0		20