为高效求解舰船舱室的空间布局优化问题,提出基于群组运动仿真和张量场的交互式布局设计与优化方法.首先使用基于图像的流动可视化算法(image based flow visualization,IBFV)分析空间布局域中的张量场,计算特征向量并生成舰船通道网,...为高效求解舰船舱室的空间布局优化问题,提出基于群组运动仿真和张量场的交互式布局设计与优化方法.首先使用基于图像的流动可视化算法(image based flow visualization,IBFV)分析空间布局域中的张量场,计算特征向量并生成舰船通道网,得到以该通道网为基础的舱室空间布局;然后通过群组仿真算法模拟不同人员在舱室空间布局域内的行为活动,进而评价船员在舱室中的移动性和舒适性.在得到一系列舰船通道网和群组仿真数据结果之后,分别建立通道网中通道宽度、通道间距与群组仿真结果中移动性代价值、舒适性代价值之间的映射关系,并以群组运动仿真评估结果作为评价指标交互迭代调整张量场特征参数,最终得到舱室空间布局优化结果.实验结果表明,文中方法有效地建立了张量场与群组运动仿真之间的映射关系,对比遗传算法和层次分析评价法,能够快速、高效地设计出符合人类活动的高质量的舱室空间布局.展开更多
In dense crowd evacuation,especially in emergencies such as fires,the safe evacuation of large public facilities will face major challenges.At the same time,as cluster congestion tends to occur in the space where the ...In dense crowd evacuation,especially in emergencies such as fires,the safe evacuation of large public facilities will face major challenges.At the same time,as cluster congestion tends to occur in the space where the flow rate drops sharply,the superposition of fire incidents and bottleneck areas can easily evolve into malignant disasters and crowd stampedes with serious harm and influence.In this paper,Massmotion based on social force model is used to carry out a numerical simulation on exit position and corner exit form to find out the mechanism and influence law of the slight architectural adjustment on the flow at bottleneck.The results show that the traditional middle exit design is not the best,and the evacuation efficiency of the corner exit is higher than that of the middle exit.Compared with other corner exits,the average time interval between two adjacent persons passing through the bottleneck under the 30°corner exit is the shortest,and the probability of outlet clogging drops the fastest,exceeding 18%of the slowest descending speed.At the 0°corner exit,the waiting time cost of pedestrians is high and the risk of evacuation is high.The outcomes of this work can provide reference for the structural design of the building and the safe evacuation of personnel,so as to improve the evacuation efficiency and safety of pedestrians in the building to some extent.展开更多
文摘为高效求解舰船舱室的空间布局优化问题,提出基于群组运动仿真和张量场的交互式布局设计与优化方法.首先使用基于图像的流动可视化算法(image based flow visualization,IBFV)分析空间布局域中的张量场,计算特征向量并生成舰船通道网,得到以该通道网为基础的舱室空间布局;然后通过群组仿真算法模拟不同人员在舱室空间布局域内的行为活动,进而评价船员在舱室中的移动性和舒适性.在得到一系列舰船通道网和群组仿真数据结果之后,分别建立通道网中通道宽度、通道间距与群组仿真结果中移动性代价值、舒适性代价值之间的映射关系,并以群组运动仿真评估结果作为评价指标交互迭代调整张量场特征参数,最终得到舱室空间布局优化结果.实验结果表明,文中方法有效地建立了张量场与群组运动仿真之间的映射关系,对比遗传算法和层次分析评价法,能够快速、高效地设计出符合人类活动的高质量的舱室空间布局.
基金This research was sponsored by the National Natural Science Foundation of China(No.71774079)the Major Natural Science Research Projects in Colleges and Universities of Jiangsu Province(No.19KJA460011)+2 种基金the National Natural Science Foundation of China(No.51874182)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.SJCX20_0365)a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
文摘In dense crowd evacuation,especially in emergencies such as fires,the safe evacuation of large public facilities will face major challenges.At the same time,as cluster congestion tends to occur in the space where the flow rate drops sharply,the superposition of fire incidents and bottleneck areas can easily evolve into malignant disasters and crowd stampedes with serious harm and influence.In this paper,Massmotion based on social force model is used to carry out a numerical simulation on exit position and corner exit form to find out the mechanism and influence law of the slight architectural adjustment on the flow at bottleneck.The results show that the traditional middle exit design is not the best,and the evacuation efficiency of the corner exit is higher than that of the middle exit.Compared with other corner exits,the average time interval between two adjacent persons passing through the bottleneck under the 30°corner exit is the shortest,and the probability of outlet clogging drops the fastest,exceeding 18%of the slowest descending speed.At the 0°corner exit,the waiting time cost of pedestrians is high and the risk of evacuation is high.The outcomes of this work can provide reference for the structural design of the building and the safe evacuation of personnel,so as to improve the evacuation efficiency and safety of pedestrians in the building to some extent.
