Abstract
This paper presents the fundamentals of direct inverse modeling using CFD simulations to detect air pollution sources in urban areas. Generally, there are four techniques used for detecting pollution sources: the analytical technique, the optimization technique, the probabilistic technique, and the direct technique. The study discusses the potentialities and limits of each technique, where the direct inverse technique is focused. Two examples of applying the direct inverse technique in detecting pollution source are introduced. The difficulties of applying the direct inverse technique are investigated. The study reveals that the direct technique is a promising tool for detecting air pollution source in urban environments. However, more efforts are still needed to overcome the difficulties explained in the study.
Highlights
Nowadays, inverse modeling seems to be a promising topic in terms of environmental research
This paper presents the fundamentals of direct inverse modeling using Computational Fluid Dynamics (CFD) simulations to detect air pollution sources in urban areas
With the steady-state airflow pattern, forward-time CFD simulation was used to calculate pollutant concentration distribution at t = 100 s, where a pollution source was released from t = 0 to 30 s
Summary
Inverse modeling seems to be a promising topic in terms of environmental research. Nationwide, there was a civilian fire-related death every 156 minutes and a civilian fire-related injury every 28 minutes [3] All of these events have confirmed that the terroristic attacks are no longer hypothesis but a reality. From this perspective, the ability to predict pollution sources characteristics: location, strength, and release time has become a necessity in order to create a complete picture of the air quality conditions within the release domain and to ensure the public’s safety. By carrying out inverse CFD simulations, one can detect air pollution source (or release) characteristics. The direct inverse modeling technique, as a promising tool to detect air pollution sources, is focused
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