海上救援无人方舱水动力性能分析  

Hydrodynamic performance analysis of unmanned shelter for maritime rescue

作　　者：李铁骊[1] 黄珍秋 周燹 LI Tieli;HUANG Zhenqiu;ZHOU Xian(School of Naval Architecture and Ocean Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《大连理工大学学报》2025年第1期56-66,共11页Journal of Dalian University of Technology

基　　金：工业装备结构分析国家重点实验室专项基金资助项目(S18315).

摘　　要：空投方舱的方形系数过大,使得方舱在航行时艏摇、横摇、纵摇严重,水动力性能较差,需针对方舱的入水航行问题进行水动力性能分析,并为其设计优选附体,改善方舱的稳定性.根据确定的方舱主尺度、船型参数以及重心位置可行域,利用CFD方法研究方舱的水动力性能,包括快速性、耐波性、航向稳定性等,为方舱设计并优化附体.其中快速性方面,计算固定吃水、纵倾时的阻力以及空载、设计载况下放开纵摇和垂荡的静水阻力;耐波性主要计算空载、设计载况下的波浪增阻和自由横摇衰减时间,增加舭龙骨以改善横摇稳定性;航向稳定性主要计算方舱艏摇衰减时间,并加装艏艉鳍改善其航向稳定性;最后对加装优选附体的方舱进行分析对比,并完成实船阻力、功率预估.通过加装附体的方式对方舱进行优化,水动力性能分析证明了其动力和推进系统可行性,初步确定加装优选附体的方舱模型,为后续总体设计及其设备选取提供技术参考.Due to the excessively large square coefficient of the airdropped shelter,it experiences severe yaw,roll and pitch during navigation,resulting in poor hydrodynamic performances.Therefore,it is necessary to analyze the hydrodynamic performances of the shelter in view of the problem of water entry navigation,and to design the preferred appendages to improve its stability.The hydrodynamic performances of the shelter,including rapidity,wave resistance and heading stability,are studied by CFD method according to the confirmed main scale of the shelter,ship shape parameters and the feasible area of the center-of-gravity position,and the appendages are designed and optimized for the shelter.In terms of rapidity,the resistance under fixed draft and longitudinal tilt and the static water resistance releasing pitch and heave under no-load and design load conditions are calculated.For wave resistance,it mainly calculates the wave drag increase and free rolling decay time under no-load and design load conditions,and bilge keel is added to improve roll stability.For heading stability,it mainly calculates the yaw decay time of the shelter,and improves its heading stability by adding bow and stern fins.Finally,the shelter equipped with the preferred appendages is analyzed and compared,and the resistance and power of the real ship are estimated.The shelter is optimized by adding appendages,and the hydrodynamic performance analysis proves the feasibility of its power and propulsion system.The shelter model adding preferred appendages is preliminarily determined,which provides technical reference for the subsequent overall design and equipment selection.

关 键 词：无人艇 救援方舱 水动力性能 快速性 耐波性 航向稳定性 附体优化设计 

分 类 号：U661.3[交通运输工程—船舶及航道工程]