CAJ | 학술논문

考虑大型储油罐在地震荷载作用下罐体中流体晃动对设备造成的严重影响，工程上常采用防晃板来抑制液体的晃动，其中以环形防晃板的应用最为广泛。基于概率密度演化理论分析了带有环形隔板罐体中流体的晃动响应。首先介绍了求解罐中流体晃动响应的“流体子域法”，介绍了广义概率密度演化方程及其差分解法；然后总结了对罐中流体晃动响应进行概率密度演化分析的基本步骤；最后通过算例得出流体液面波高的均值与方差，得到波高峰值出现的时间以及最大波高峰值，这使得对流体晃动响应的把握更为精确，也为储液罐及防晃板的精细化设计提供了依据。
고필대형저유관재지진하재작용하관체중류체황동대설비조성적엄중영향，공정상상채용방황판래억제액체적황동，기중이배형방황판적응용최위엄범。기우개솔밀도연화이론분석료대유배형격판관체중류체적황동향응。수선개소료구해관중류체황동향응적“류체자역법”，개소료엄의개솔밀도연화방정급기차분해법；연후총결료대관중류체황동향응진행개솔밀도연화분석적기본보취；최후통과산례득출류체액면파고적균치여방차，득도파고봉치출현적시간이급최대파고봉치，저사득대류체황동향응적파악경위정학，야위저액관급방황판적정세화설계제공료의거。
Considering serious impacts of fluid sloshing in large-scale storage tanks under seismic loads on the devices,a baffle,especially,an annual baffle is used to control the liquid sloshing widely in practical projects.Here,the probability density evolution theory was used to analyze fluid sloshing in a cylindrical tank with an annual baffle.Firstly, the fluid sub-domain method to solve the response of fluid sloshing was introduced.Then,the basic steps of the analysis method based on the probability density evolution theory for fluid sloshing in a cylindrical tank were summarized.At last, through examples the mean and variance of the wave height of fluid surface were obtained.The appearing instants of the wave height peaks and the maximum wave height peaks were also gained.Thus,the prediction of the fluid sloshing response was more accurate.The results provided a basis for fine design of fluid storage tanks and baffles.