桨前自由状态冰的受力和运动轨迹
|
摘要
为了模拟冰桨相互作用下的冰桨碰撞情况,本文构建了一种冰桨干扰模型。通过利用重叠网格技术结合DFBI运动模型,计算无约束状态下冰桨的相互干扰情况,分析了水下冰在螺旋桨抽吸作用下的受力大小,并得出了冰块的运动轨迹。在计算过程中,通过控制桨的转速和冰的相对位置来达到多工况下的求解。根据结果分析得出:由于螺旋桨的抽吸作用,冰块在各个方向上的受力改变量峰值均出现在桨盘面处;同时冰在相同前进速度下,进速系数越大,冰桨发生碰撞的概率越高。本文结论可为冰区螺旋桨设计及校核提供一定参考。
To simulate ice-propeller collision under the interaction of the brushed ice,an ice-propeller interaction model was built for this study,and the overlapped grid method combined with a dynamic fluid body interaction( DFBI) model was used to calculate the mutual interaction of the unconstrained ice and propeller. The force of the underwater ice under the influence of the suction effect of the propeller was analyzed. In the calculation,the working condition was changed by altering the propeller's rotation speed and the relative position of the ice. Analysis of the calculated results showed that,due to the suction of the propeller,all of the peak values of change of forces borne by the ice in all directions appeared at the interface of propeller and disk. When the speed remained constant,the larger the velocity coefficient,the higher the probability of an ice-propeller collision.
To simulate ice-propeller collision under the interaction of the brushed ice,an ice-propeller interaction model was built for this study,and the overlapped grid method combined with a dynamic fluid body interaction( DFBI) model was used to calculate the mutual interaction of the unconstrained ice and propeller. The force of the underwater ice under the influence of the suction effect of the propeller was analyzed. In the calculation,the working condition was changed by altering the propeller's rotation speed and the relative position of the ice. Analysis of the calculated results showed that,due to the suction of the propeller,all of the peak values of change of forces borne by the ice in all directions appeared at the interface of propeller and disk. When the speed remained constant,the larger the velocity coefficient,the higher the probability of an ice-propeller collision.
引文
[1]徐佩.模型冰对螺旋桨水动力性能影响的试验研究[D].哈尔滨:哈尔滨工程大学,2016.XU Pei. Experimental study on the effect of blockage on hydrodynamic performance of propeller[D]. Harbin:Harbin Engineering University,2016.
[2]孙文林.冰区航行船舶螺旋桨强度研究[D].哈尔滨:哈尔滨工程大学,2016.SUN Wenling. Research on the propeller strength of ice-going ships[D]. Harbin:Harbin Engineering University,2016.
[3]SOININEN H. A propeller-ice contact model[D]. Helsinki:Helsinki University of Technology.
[4]LIU P,DOUCET J M,VEITCH B,et al. Numerical prediction of ice induced hydrodynamic loads on propellers due to blockage[J]. Oceanic engineering international,2000,4(1):31-38.
[5]常欣,封振,王超,等.冰临近过程中螺旋桨的水动力性能计算分析[J].武汉理工大学学报,2016,38(9):43-50.CHANG Xin,FENG Zhen,WANG Chao,et al. Hydrodynamic performance calculation of a propeller under the action of an approaching ice block[J]. Journal of Wuhan University of Technology,2016,38(9):43-50.
[6]国船.国内首次冰区船用螺旋桨试验研究顺利完成[J].军民两用技术与产品,2017(7):26.
[7]YE L Y,WANG C,CHANG X,et al. Propeller-ice contact modeling with peridynamics[J]. Ocean engineering,2017,139:54-64.
[8]王建强,丁举.冰载荷下螺旋桨强度校核计算[C]//2015年船舶水动力学学术会议论文集.哈尔滨:中国造船工程学会船舶力学学术委员会,2015:8.
[9]孙文林,王超,康瑞,等.冰区航行船舶推进系统设计的若干考虑[J].船舶工程,2015,37(9):31-36.SUN Wenlin,WANG Chao,KANG Rui,et al. Several considerations for design of ice-class propulsion system[J].Ship engineering,2015,37(9):31-36.
[10]VEITCH B. Predictions of ice contact forces on a marine screw propeller during the propeller-ice cutting process[J]. Acta polytechnica scandinavica,mechanical engineering series,1995,118:1-110.
[11]VEITCH B. Predictions of propeller loads due to ice contact[J]. International shipbuilding progress, 1997,44(439):221-239.
[12]王超,叶礼裕,常欣,等.非接触工况下冰桨干扰水动力载荷实验[J].哈尔滨工程大学学报,2017,38(8):1190-1196.WANG Chao,YE Liyu,CHANG Xin,et al. Test of hydrodynamic loads under non-contact propeller-ice interaction[J]. Journal of Harbin Engineering University,2017,38(8):1190-1196.
[2]孙文林.冰区航行船舶螺旋桨强度研究[D].哈尔滨:哈尔滨工程大学,2016.SUN Wenling. Research on the propeller strength of ice-going ships[D]. Harbin:Harbin Engineering University,2016.
[3]SOININEN H. A propeller-ice contact model[D]. Helsinki:Helsinki University of Technology.
[4]LIU P,DOUCET J M,VEITCH B,et al. Numerical prediction of ice induced hydrodynamic loads on propellers due to blockage[J]. Oceanic engineering international,2000,4(1):31-38.
[5]常欣,封振,王超,等.冰临近过程中螺旋桨的水动力性能计算分析[J].武汉理工大学学报,2016,38(9):43-50.CHANG Xin,FENG Zhen,WANG Chao,et al. Hydrodynamic performance calculation of a propeller under the action of an approaching ice block[J]. Journal of Wuhan University of Technology,2016,38(9):43-50.
[6]国船.国内首次冰区船用螺旋桨试验研究顺利完成[J].军民两用技术与产品,2017(7):26.
[7]YE L Y,WANG C,CHANG X,et al. Propeller-ice contact modeling with peridynamics[J]. Ocean engineering,2017,139:54-64.
[8]王建强,丁举.冰载荷下螺旋桨强度校核计算[C]//2015年船舶水动力学学术会议论文集.哈尔滨:中国造船工程学会船舶力学学术委员会,2015:8.
[9]孙文林,王超,康瑞,等.冰区航行船舶推进系统设计的若干考虑[J].船舶工程,2015,37(9):31-36.SUN Wenlin,WANG Chao,KANG Rui,et al. Several considerations for design of ice-class propulsion system[J].Ship engineering,2015,37(9):31-36.
[10]VEITCH B. Predictions of ice contact forces on a marine screw propeller during the propeller-ice cutting process[J]. Acta polytechnica scandinavica,mechanical engineering series,1995,118:1-110.
[11]VEITCH B. Predictions of propeller loads due to ice contact[J]. International shipbuilding progress, 1997,44(439):221-239.
[12]王超,叶礼裕,常欣,等.非接触工况下冰桨干扰水动力载荷实验[J].哈尔滨工程大学学报,2017,38(8):1190-1196.WANG Chao,YE Liyu,CHANG Xin,et al. Test of hydrodynamic loads under non-contact propeller-ice interaction[J]. Journal of Harbin Engineering University,2017,38(8):1190-1196.