摘要
为对比分析不同船舶波浪增阻和运动响应数值预报方法的优劣,以一艘19000载重吨多用途船为研究对象,分别采用势流二维切片法、势流三维面元法和黏流数值计算法计算船舶的波浪增阻和运动响应,并在实际海况下将采用这些方法所得结果与模型试验结果相对比。研究发现:采用不同计算方法得到的波浪增阻和垂荡运动结果均与物模试验结果接近,均在工程允许的精度范围内;受细长体假设的影响,势流二维切片法未考虑船型特征,其对目标船型的纵摇响应预报结果的偏差较大。综合分析,在实际工程应用中,为节约时间和成本,可采用势流三维面元法预报船舶的波浪增阻和运动响应。
In order to compare and study the existing numerical prediction methods of wave added resistance and ship’s motion response,a 19000 DWT multi-purpose ship is taken as the research object.2-D strip method and 3-D panel method of potential theory as well as numerical calculation method of viscous theory are used to calculate the wave added resistance and the motion response of the ship.The prediction under the actual sea condition is also carried out.By comparing with the model test results,it is found that the results of wave added resistance and heave predicted by all the methods are very close and are within the allowable error range of the engineering.However,the pitch prediction result of 2-D strip method of potential theory has a larger deviation than other methods,because this method does not consider the ship shape with the slender body hypothesis.Comprehensive analysis shows that for practical engineering application,in order to save time and cost,3-D panel method of potential theory is the first choice for predicting wave added resistance and ship’s motion response.
作者
陆泽华
曹旭
李传庆
LU Zehua;CAO Xu;LI Chuanqing(State Key Laboratory of Navigation and Safety Technology,Shanghai Ship and Shipping Research Institute Co.,Ltd.,Shanghai 200135,China)
出处
《上海船舶运输科学研究所学报》
2022年第4期13-19,32,共8页
Journal of Shanghai Ship and Shipping Research Institute
关键词
波浪增阻
二维切片法
三维面元法
黏流数值计算
wave added resistance
2-D strip method
3-D panel method
numerical calculation method
作者简介
陆泽华(1991-),男,江苏南通人,助理研究员,硕士,主要从事船舶水动力方面的研究。
