Bidirectional coupling of macroscopic and microscopic pedestrian evacuation models |
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Authors: | André Borrmann Angelika Kneidl Gerta Köster Stefan Ruzika Markus Thiemann |
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Institution: | 1. Technische Universität München, Arcisstraße 21, 80290 München, Germany;2. Technische Universität Kaiserslautern, Paul-Ehrlich-Straße 14, 67663 Kaiserslautern, Germany;3. Siemens AG, Corporate Technology, Production Processes, CT PP2, D-80200 Munich, Germany |
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Abstract: | In this contribution, a combination of a macroscopic and a microscopic model of pedestrian dynamics using a bidirectional coupling technique is presented which allows to obtain better predictions for evacuation times. While the macroscopic model is derived from dynamic network flow theory, the microscopic model is based on a cellular automaton. Output from each model is fed into the other, thus establishing a control cycle. As a result, the gap between the evacuation times computed by both models is narrowed down: The coupled model considers both optimized routing strategies as well as microscopic effects. Accordingly the typical underestimation of evacuation times by purely macroscopic approaches is reduced. At the same time the microscopic model is enhanced by a steering component which reflects the macroscopic knowledge and the impact of supervising personnel on the distribution of pedestrian flows. |
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