基于算法模型的肥大型船艉流场评估方法  

Evaluating Wake Field of Full-Formed Ships with Algorithmic Model

作　　者：孙怡然 陈伟民[1] 杜云龙[1] SUN Yiran;CHEN Weimin;DU Yunlong(State Key Laboratory of Navigation and Safety Technology,Shanghai Ship and Shipping Research Institute Co.,Ltd.,Shanghai 200135,China)

机构地区：[1]上海船舶运输科学研究所有限公司、航运技术与安全国家重点实验室,上海200135

出　　处：《上海船舶运输科学研究所学报》2023年第3期1-7,共7页Journal of Shanghai Ship and Shipping Research Institute

摘　　要：为快速、准确评估肥大型船的艉流场,以某肥大型散货船为研究对象,应用计算流体力学(Computational Fluid Dynamics,CFD)技术和人工智能算法建立一种艉流场快速评估方法。分别采用数值计算方法和粒子图像测速(Particle Image Velocimetry,PIV)技术对艉流场进行计算和试验,通过将计算结果与试验结果相对比验证数值计算方法的准确性。在此基础上,采用3种人工智能算法开展模型训练并分析模型拟合情况,采用拟合度最高的算法建立艉流场快速评估模型,进而得到肥大型船艉流场评估方法。研究表明:采用CFD软件能准确模拟出肥大型散货船艉流场的实际流动状态并展示其流动细节;采用伴流均匀度等参数描述艉流场,并将其应用于基于算法模型建立的艉流场评估方法中,可快速评估艉流场的不均匀度和流动特性,为肥大型船的艉部型线优化、螺旋桨及节能装置设计提供参考。A fast wake evaluation method is devised for a full-formed ship.The CFD(Computational Fluid Dynamics)technology and artificial intelligence algorithm are used to standardize the wake field and construct the evaluation model.The accuracy of the model is checked by PIV(Particle Image Velocimetry)technology.The artificial intelligence algorithm for the model is chosen through model training.Three artificial intelligence algorithms are tried and the one gives the best fitting accuracy is picked up for the final model.The calculation error of the model is analyzed.Experiments show that for full-formed bulk carriers,CFD software is good for simulating the flow state of the wake field and displaying flow details.The parameters such as wake uniformity can be valuable references for optimizing the stern profile of full-formed ships,designing propellers and energy-saving devices.

关 键 词：计算流体力学(CFD)技术 艉流场 人工智能算法 粒子图像测速(PIV)技术 

分 类 号：U661.7[交通运输工程—船舶及航道工程]