PROPOSAL OF FLUID FORCE FUNCTION FOR CROWD EVACUATION SIMULATION IN INUNDATED AREA

2021 ◽  
Vol 77 (1) ◽  
pp. 1-10
Author(s):  
Junji KAWASAKI ◽  
Akio SHIBUTANI ◽  
Eiji HARADA ◽  
Hitoshi GOTOH
Keyword(s):  
Force Function ◽  
Evacuation Simulation ◽  
Fluid Force ◽  
Crowd Evacuation

Simulation Model of Crowd Evacuation Navigation in a Multi-Obstacle Environment

2020 ◽  
pp. 036119812097126
Author(s):  
Zhongrui Ni ◽  
Zhen Liu ◽  
Tingting Liu ◽  
Yanjie Chai ◽  
Cuijuan Liu
Keyword(s):  
Simulation Model ◽  
Simulation Experiment ◽  
Control Algorithms ◽  
Prototype System ◽  
Evacuation Simulation ◽  
Agent Based ◽  
Crowd Management ◽  
Navigation Simulation ◽  
Local Navigation ◽  
Crowd Evacuation

The simulation of a crowd evacuating public buildings can be an important reference in planning the layout of buildings and formulating evacuation strategies. This paper proposes an agent-based crowd model; a crowd evacuation navigation simulation model is proposed for the multi-obstacle environment. We introduce the concept of navigation factor to describe the proximity of the navigation point to the exit. An algorithm for creating navigation points in multi-obstacle environment is proposed along with the global navigation and local navigation control algorithms of the crowd. We construct a crowd evacuation simulation prototype system with different simulation scenes using the scene editor. We conduct the crowd evacuation simulation experiment in the multi-obstacle scene, recording and analyzing the relevant experimental data. The simulation prototype system can be used to derive the evacuation time of the crowd and analyze the evacuation behavior of the crowd. It is expected to provide a visual deduction method for crowd management in an evacuation emergency.

WALK: A Modular Testbed for Crowd Evacuation Simulation

2013 ◽  
pp. 1417-1424
Author(s):  
Stefan Münchow ◽  
Ia Enukidze ◽  
Stefan Sarstedt ◽  
Thomas Thiel-Clemen
Keyword(s):  
Evacuation Simulation ◽  
Crowd Evacuation

scholarly journals Study on evacuation simulation under crowd-diversion condition

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878509 ◽  
Author(s):  
Yung-Piao Chiu ◽  
Yan-Chyuan Shiau ◽  
Yi-Hsuan Lai
Keyword(s):  
Literature Review ◽  
Flow Diverter ◽  
Evacuation Simulation ◽  
Evacuation Time ◽  
Software Packages ◽  
Space Size ◽  
Crowd Evacuation ◽  
Simulation Results ◽  
Safety Evacuation ◽  
Occupant Evacuation

With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has been aware. Occupants in a building will crowd at exit(s) when they evacuate in disasters. The content of this study includes the following: (1) to conduct a literature review on severe stampedes in history, identifying the number of casualties, and to explore existing research on crowd evacuation; (2) to examine the applicability of software packages EXODUS and Unity for simulating occupant evacuation using them for simulations under identical conditions; and (3) to construct simulated evacuation environments using Unity and perform simulations with different combinations of occupant number, space size, exit size, and flow diverter size. The simulation results found that placing a flow diverter in front of the exit could reduce the evacuation time effectively. The best result was observed when the width of the door is close to the width of the flow diverter; it can reduce the evacuation time by about 25%. When more than 60 people were emptying through an exit below 120 cm width, the blocking happened regardless of whether a flow diverter was placed.

scholarly journals Crowd Evacuation Behaviour Modeling and Simulation in 3D Platform

2020 ◽  
Vol 8 (5) ◽  
pp. 1187-1192
Keyword(s):  
Exit Time ◽  
Three Dimensional ◽  
Emergency Situation ◽  
Crowd Simulation ◽  
Evacuation Simulation ◽  
Evacuation Time ◽  
Building Evacuation ◽  
Crowd Evacuation ◽  
The Individual ◽  
Safe Condition

Crowd simulation is an active research domain and is crucial for simulating crowd behaviour in certain condition such as normal or panic situation. The simulation is to show the interaction between the individual in a crowd. Nowadays, there are many kinds of scenarios as well as simulation softwares that can be adapted to simulate a crowd simulation such as during emergency situation e.g. building evacuation. Crowd simulation in three-dimensional platform is fairly important in order to have a more realistic looks and movement of the crowd in one particular environment. The evacuation simulation is useful for the crowd in one confinement to seek for a safe exit path in shortest time possible and thus increase the occupant’s safety. The evacuation time is said to be in safe condition if all the evacuees successfully can get through the exit in minimal time. To aid in minimal exit time, the concept of faster-is-slower (bottleneck) must be solved as it can lead to more waiting time or delay during evacuation process. In this paper, it will discuss about the crowd simulation behavior, crowd simulation based on agent-based model, existing crowd simulation tools and the result of simulating the three-dimensional (3D) crowd evacuation time based on a number of exits variation in panic situation. The tools used to carry out the experiment is Anylogic software whereby the results show that it adheres to shorter evacuation time when the number of exit increases. The 3D layout design was following the original layout the faculty’s lower ground floor where the classrooms are mostly resided. The simulation is useful in order to estimate of evacuation time with different total number of exits to alleviate the faster-is-slower effect in case of any emergency situation happens at the faculty building.

Crowd evacuation simulation approach based on navigation knowledge and two-layer control mechanism

2018 ◽  
Vol 436-437 ◽  
pp. 247-267 ◽  
Author(s):  
Hong Liu ◽  
Baoxi Liu ◽  
Hao Zhang ◽  
Liang Li ◽  
Xin Qin ◽  
...  
Keyword(s):  
Control Mechanism ◽  
Simulation Approach ◽  
Evacuation Simulation ◽  
Crowd Evacuation ◽  
Layer Control
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