Influence of Ice Size Parameter Variation on Hydrodynamic Performance of Podded Propulsor
Influence of Ice Size Parameter Variation on Hydrodynamic Performance of Podded Propulsor
复制标题
冰尺寸参数变化对吊舱推进器水动力性能的影响
DOI：
10.1007/s13344-020-0004-x
复制
发表时间：
2020
影响因子：
1.6
通讯作者：
Zhang Cheng-sen
中科院分区：
文献类型：
--
作者：
Guo Chun-yu;Xu Pei;Wang Chao;Wang Lian-zhou;Zhang Cheng-sen
在破冰航行过程中，一艘冰船的船体下堆积着大量大小不一的碎冰块。这些冰滑入吊舱推进器前侧的流场中，影响了周围的流场，加剧了螺旋桨尾迹的不均匀。在螺旋桨上形成脉动载荷，影响吊舱推进器的水动力性能。为了研究冰舱推进器与螺旋桨相互作用过程中螺旋桨水动力性能的变化，采用重叠网格技术模拟了不同螺旋桨转角和不同冰块尺寸下吊舱推进器的非定常水动力性能。在此基础上，讨论了冰与吊舱推进器相互作用下螺旋桨旋转时叶片的水动力行为。详细分析了不同大小冰块与吊舱推进器相互作用时的螺旋桨非定常载荷和周围流场。确定了螺旋桨圆周运动过程中水动力性能的变化，以及冰层大小变化对螺旋桨推力和扭矩的影响。计算结果对冰舱推进器干扰的实验研究、理论计算和数值模拟具有一定的参考意义。
During ice-breaking navigation, a massive amount of crushed ice blocks with different sizes is accumulated under the hull of an ice-going ship. This ice slides into the flow field in the forward side of the podded propulsor, affecting the surrounding flow field and aggravating the non-uniformity of the propeller wake. A pulsating load is formed on the propeller, which affects the hydrodynamic performance of the podded propulsor. To study the changes in the propeller hydrodynamic performance during the ice-podded propulsor interaction, the overlapping grid technique is used to simulate the unsteady hydrodynamic performance of the podded propulsor at different propeller rotation angles and different ice block sizes. Hence, the hydrodynamic blade behavior during propeller rotation under the interaction between the ice and podded propulsor is discussed. The unsteady propeller loads and surrounding flow fields obtained for ice blocks with different sizes interacting with the podded propulsor are analyzed in detail. The variation in the hydrodynamic performance during the circular motion of a propeller and the influence of ice size variation on the propeller thrust and torque are determined. The calculation results have certain reference significance for experiment-based research, theoretical calculations and numerical simulation concerning ice-podded propulsor interaction.