Modeling and assessment of civil aircraft evacuation based on finer-grid

Fang, Zhiming; Lv, Wei; Lixue, Jiang; Xu, Qingfeng; Song, Weiguo

doi:10.1016/j.physa.2015.12.092

Cited by 19 publications

(7 citation statements)

References 24 publications

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“…The effects of several boundary conditions, such as crowd heterogeneity, width of the main exit, and type of exit, were analyzed. For aircraft evacuation, the effects of several factors (including cabin designing and individual characteristics) on evacuation efficiency have been studied primarily in the simulation experiments [26,27]. Validation of the models often involves proprietary data from aircraft manufacturers and component designers [28,29], limiting public availability.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the dimension of the legroom in the cabin is even smaller than the body width. Recognizing the need for a fine characterization of space, the fine-grid CA model, where each pedestrian can occupy more than one grid, has been extensively applied in simulating the evacuation in narrow seated areas [21,26,27,38]. This study aims to incorporate insights from the experimental observations into the existing fine-grid CA model and investigate the impact of exit failures.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of pedestrian evacuation from narrow seated area considering exit failure: experimental and simulation results

Hu,

Chen,

Wang

et al. 2024

J. Stat. Mech.

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Narrow seated spaces with multiple exits are prevalent structures in public buildings, underscoring the paramount importance of facilitating swift evacuation in such constrained environments. In this study, we first conducted evacuation experiments in a realistic narrow seated area. By manipulating different availability conditions for two exits located at the ends of the long aisle, we studied the effects of unpredictable exit failures, specifically, how the exit switch and explicit guidance influence the evacuation process. The movement characteristics are explored in several aspects, such as pre-evacuation time, aisle conflicts, speed, distance headway, evacuation time, and time lapse. We found that once people have encountered the exit failure condition, they would demonstrate enhanced preparedness in subsequent trials, leading to expedited exit switches. With explicit guidance, people would be less hesitant and move faster in the main aisle. The fine-grid cellular automata model is extended based on the experimental observations to verify its feasibility in simulating this process. Conflict resolution and turning behavior are incorporated for a more nuanced description. The effects of the exit switch are parameterized through the informed probability and the speed reduction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characteristics of pedestrian evacuation from narrow seated area considering exit failure: experimental and simulation results

Hu,

Chen,

Wang

et al. 2024

J. Stat. Mech.

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“…Zou et al ( 4 ) analyzed pedestrian evacuation through the cellular automata model and pointed out that pedestrian speeds can alter the evacuation efficiency to a certain extent. Using the FGCAE model, Fang et al ( 5 ) simulated the evacuation process of Airbus A380 to evaluate the evacuation efficiency of different exit locations. Wu et al ( 6 ) pointed out that proper physical separation measures can effectively reduce the congestion at the exit in the early evacuation period and found that the symmetrical distribution of the exit is beneficial to improve the evacuation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Evacuation Optimization Strategy for Large-Scale Public Building Considering Plane Partition and Multi-Floor Layout

Fang

Cheng

et al. 2022

Front. Public Health

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Large-scale public buildings (e.g., stadiums and comprehensive hospitals) in modern cities provide places for various social activities. However, all of these public places encounter the scenario of large passenger flow and crowd gathering, which is highly likely to induce serious safety problems, such as stampedes. Previous studies have shown that efficient evacuation is an important way to ensure the safety of dense crowds in public places. This study aims to explore the optimization methods to improve the evacuation efficiency of public buildings. Two strategies considering plane partition and multi-floor layout are proposed for plane evacuation and vertical evacuation, respectively. Simulation scenarios and models of large stadiums and high-rise hospitals are established to verify the strategies. The results show that plane partition could effectively shorten the total evacuation time, which is due to the optimization of the initial exit choice of individuals and the avoidance of regional congestion in some evacuation channels or exits. Multi-floor layout optimization is an effective management method to arrange the different features of different floors, which could improve the evacuation efficiency for the whole multi-floor building. This study is helpful for building designers and managers to improve the building space layout design and the daily safety management mode.

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“…Many emergency evacuation models for aircraft have been developed, such as the GPSS model, 6 the MA model, 7 the OOO model, 8 the airEXODUS model, [9][10][11] the DEM model, 12 the VacateAir model, 13,14 the CAEESS model, 15 the EvacuSimulation model, 16 the SOAEE model, 17 PAXelerate model, 18 and the FGCAE model. 19 Lovreglio et al 20 focused on behavioral uncertainty in evacuation process and demonstrated by experimental and simulation. Wu et al 21 developed a novel evacuation model using game theory and found the optimal position of exits in rectangle room.…”

Section: Introductionmentioning

confidence: 99%

A dynamic estimation method for aircraft emergency evacuation based on cellular automata

Zhang

Yang

Sun

2019

Advances in Mechanical Engineering

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To reduce the time of aircraft passenger evacuation in an unplanned emergency and improve passenger safety, this article proposed a dynamic estimation method of an aircraft emergency evacuation process; optimal performance statistics can be estimated efficiently. Then, the emergency guiding model is established based on the cellular automata theory. In this model, multiple factors are considered, such as seat pitch, exit width, and occupant behavior. A total of six categories (target exit choice, movement direction selection, movement speed calculation, behavior representation, crew operation, and exit modeling) and 24 evacuation regulations are included. Two kinds of civil aircraft with 90 seats and 149 seats were tested individually using the proposed model and a traditional model. The total evacuation time can be reduced by more than 5%, and optimal performance statistics can be reduced by more than 30%. The results indicate that with this model, more lives can be saved in the case of an emergency.

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Modeling and assessment of civil aircraft evacuation based on finer-grid

Cited by 19 publications

References 24 publications

Characteristics of pedestrian evacuation from narrow seated area considering exit failure: experimental and simulation results

Characteristics of pedestrian evacuation from narrow seated area considering exit failure: experimental and simulation results

Evacuation Optimization Strategy for Large-Scale Public Building Considering Plane Partition and Multi-Floor Layout

A dynamic estimation method for aircraft emergency evacuation based on cellular automata

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