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| 1 | 充液航天器姿态稳定分析的Casimir方法显示文摘充液航天器中的液体燃料晃动将可能导致航天器姿态不稳定性现象的发生.本文采用哈密顿动力学方法研究了半充液航天器姿态运动的稳定性问题.首先将晃动液体等效为弹簧质量块力学模型,建立了液体晃动与航天器姿态多体耦合动力学系统的哈密顿方程,并进一步推导了与耦合动力学系统相关的Casimir函数;借助于Casimir函数并采用李亚普诺夫稳定性理论推导出耦合系统的稳定性和非稳定性条件,最后给出了数值仿真结果及相关结论. | 岳宝增 AHMAD Salman 宋晓娟 | 2013 | 中国科学:物理学、力学、天文学2013，43，4： | 2 |
| 2 | 轴对称贮箱内液体大幅晃动的复合等效力学模型显示文摘航天工程中普遍使用等效力学模型描述液体晃动动力学,但基于线性理论的传统等效力学模型在大幅晃动中的适用性较差、精度较低.为此本文提出适用于常/低重力环境下液体大幅晃动的复合等效建模方法.以轴对称贮箱为例,提出了大幅晃动下跟随等效重力的液体动平衡位置确定方法,建立了球面摆形式的复合等效力学模型,并推导了等效系统动力学方程.为验证该建模方法有效性和模型准确性,对大幅平动和转动激励下三维圆柱形贮箱和Cassini贮箱内液体的晃动力和力矩、质心位置等进行了计算,并将复合等效力学模型、传统等效力学模型及计算流体动力学软件的计算结果进行了对比分析.结果表明,该复合等效力学模型可对液体大幅晃动的动力学响应进行较为准确的预测. | 苗楠 刘战合 王晓璐 王菁 李国举 | 2020 | 中国科学:物理学、力学、天文学2020，50，7： | 2 |
| 3 | 密度分层液体晃荡非线性相互作用机理研究显示文摘基于振动台试验研究了水平激励下的密度分层液体晃荡,利用Morlet小波变换和小波二阶相关谱分析了密度分层液体晃荡的非线性作用.Morlet小波变换显示界面波最大波高和最大晃荡压力发生在强非线性相互作用的时间段内,当外激励频率远离理论固有频率时,只在密度分层液体晃荡初始时间段内发生较强的非线性相互作用,当外激励频率等于固有频率时,非线性相互作用程度随着时间推移越来越强.小波二阶相关谱呈现的Morlet小波变换中出现的频率变化表明,当外激励频率等于固有频率时密度分层液体晃荡的非线性相互作用程度最强,其程度在小波二阶相关谱中接近1.当外激励频率远离固有频率时,界面波频率成分之间也有相当程度的非线性相互作用(bw>0.5). | 薛米安 罗铆钧 苑晓丽 | 2021 | 大连理工大学学报2021，61，3： | 1 |
| 4 | 液舱三维晃荡运动二阶共振理论解及特性分析显示文摘从无旋运动的理论出发,并利用微扰法,推导了液舱三维晃荡运动二阶共振问题的理论解。考虑纵荡和横荡运动情况,对液舱三维晃荡二阶共振问题进行了分析。当两个晃荡方向的和频(即其外部激发频率的和)或差频(即其外部激发频率的差值)等于液舱固有频率时,二阶共振发生;当某一晃荡方向(横荡或纵荡)外部激发频率与另一晃荡方向(纵荡或横荡方向)液舱某一固有频率的和或差值等于液舱另一固有频率时,二阶共振也会发生。进一步研究了各个二阶共振激发频率下水深变化对晃荡振幅的影响。结果表明,对于两个晃荡方向外部激发频率的和频和单一晃荡方向(纵荡或横荡)某一个激发频率与另一晃荡方向(横荡或纵荡)某一个属于奇模的固有频率的和频所引发的共振情况,水深变化对共振振幅大小的影响比较大;而对于相应差频所引发的共振情况,水深变化对共振振幅大小的影响比较小。 | 杨小岩 张洪生 吴鹏飞 | 2015 | 海洋工程2015，33，3： | 1 |
| 5 | Impact of slip boundary on sloshing motions in partially filled containers显示文摘Sloshing is a kind of fluid motion inside partially filled containers. In spacecraft and other partially filled moving containers, sloshing plays an important role. The contact line between the fluid and solid boundary affects the fluid movement and sloshing during motion. A physical model for steady fluid flow with a partial slip boundary is presented and equations for this model are derived for cylindrical (tube-shaped) tanks. This gives a nonlinear system of differential equations that is solved numerically by using a Successive Over-Relaxation (SOR) technique and graphical results are shown. Variations in steady fluid flow are observed with changes in the slip length and some useful results are derived. The effects on the microscopic radius of the fluid layer in a capillary tube are also shown through graphical results. | AHMAD Salman | 2011 | Chinese Science Bulletin2011，56，25： | 1 |
| 6 | Nonlinear waves and wave-structure interactions in marine hydrodynamics——Recent progress显示文摘We briefly review the recent progress in marine hydrodynamics.Developments in wave-structure interaction,wave-current interaction,Rogue waves,sloshing in liquid tanks and their applications in ocean engineering,such as Floating Production Storage and Offloading facility(FPSO) and Very Large Floating Structure(VLFS),are presented. | WANG Chun | 2012 | Science China(Technological Sciences)2012，55，11： | 0 |
| 7 | A review on liquid sloshing hydrodynamics显示文摘Liquid sloshing in tanks is a very complex nonlinear free surface fluid flow problem,which must be considered in most of the marine engineering problems such as naval architecture,offshore engineering and so on.Violent liquid sloshing in large containers can damage the tank structure due to the direct liquid impacting action.Sloshing also affects the capsizing process of the liquid cargo ship.Some works on mitigating sloshing by using all kinds of the baffles were thus followed with interests.Oil layers with thinner thickness were shown to reduce the sloshing load of water in tanks.The sloshing characteristics in tanks with different sizes were different,therefore,scaling effect of sloshing should also be considered.Sloshing in a tank can also be used as tuned liquid dampers(TLDs)to dampen wind,wave and flow-induced motions of floating or fixed marine platforms.This paper present an overview on recent advances of liquid sloshing hydrodynamics including sloshing mitigation by using anti-sloshing baffle,layered fluids sloshing,scaling effect of sloshing and TLDs. | Jin-hai Zheng Mi-An Xue Peng Dou Yu-meng He | 2021 | Journal of Hydrodynamics2021，33，6： | 0 |
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