摘要
虽然冲箱式造波机已有不少应用,但由于箱体几何形状及椭圆余弦波理论复杂,至今尚缺少椭圆余弦波的冲箱式制造理论。本文基于冲箱浸没体积变化量与生成波浪体积相守恒的原理,推导了既定波浪参数下楔形冲箱的运动控制方程,并给出了造波约束条件。使用光滑粒子流体动力学方法建立了数值波浪水槽,在经过精度检验和收敛性分析后,模拟了楔形冲箱运动和椭圆余弦波生成。比较数值结果与解析解发现,椭圆余弦波自生成起,在0.5倍波长距离内便能达到目标波形、压力和流速,从而证实了所推导造波理论的可靠性。
Although the plunger-type wavemaker has many applications,the theory of plunger-type cnoidal wave generation is still lacking because of the complex plunger geometry and cnoidal wave theory.On the basis of the conservation between the change in the immersion volume of the plunger and the volume of the generated wave,the motion equations of a wedge-shaped plunger under given wave parameters were derived,and wave-making constraints were proposed.A numerical wave flume was then established using the smoothed particle hydrodynamics method.After accuracy validation and convergence analysis,the motion of the wedge-shaped plunger and the generation of cnoidal waves were simulated.Comparisons between numerical and analytical results showed that cnoidal waves with target waveforms,pressures,and flow velocities could be produced within a distance of 0.5 wavelengths,verifying the reliability of the derived wave-making theory.
作者
隋钰程
贺铭
李雪艳
孟钰婕
张旭峰
SUI Yucheng;HE Ming;LI Xueyan;MENG Yujie;ZHANG Xufeng(School of Hydraulic Engineering&Shandong Marine Aerospace Equipment Technology Innovation Center,Ludong University,Yan-tai 264025,China;College of Engineering,Ocean University of China,Qingdao 266100,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300350,China)
出处
《哈尔滨工程大学学报》
北大核心
2025年第7期1296-1303,共8页
Journal of Harbin Engineering University
基金
国家重点研发计划(2021YFB2601100)
国家自然科学基金项目(52471295)
山东省自然科学基金项目(ZR2022ME145)
山东省海上航天装备技术创新中心(鲁东大学)开放课题基金项目(MAETIC2021B)。
关键词
造波理论
冲箱式造波机
椭圆余弦波
体积守恒
光滑粒子流体动力学
波面
压力
流速
wave-making theory
plunger-type wavemaker
cnoidal wave
volume conservation
smoothed particle hydrodynamics
wave surface
pressure
flow velocity
