An Efficient Diffusion Model for a Real-Time Gas Diffusion Simulation System

Abstract:

Due to the rising tendency of chemical accidents, it is urgent to develop a real-time gas diffusion simulation system on computer during the emergent chemical accidents, and high computation efficiency of gas diffusion model is indispensable in the simulation system. This paper develops an efficient diffusion model based on Gaussian Puff Model and proposes a special numerical simulation method for the model. With the proposed model and the proposed method, the spatial density distribution of the gas spread can be computed rapidly and displayed visually in GIS. To validate the correctness, efficiency, reliability and flexibility of the model, two groups of simulations in different aspects (space and time) are performed respectively. The result of simulation is as well as expected, and the system based on the model will provide a reliable guarantee for rescue during emergent chemical accidents.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 390-397
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.390
• Online since: August 2013
• Authors: Yong Tian Zhu, Jian Hua Li, Hao Ling, Jin Li
• Keywords: Emergent Chemical Accident, Gas Diffusion, Gaussian Model, Numerical Simulation

References

[1] M. F. Yassin, Study On Gas Diffusion Emitted From Different Height Of Point Source, Environmental Monitoring and Assessment, vol. 148, pp.379-395, (2009).

DOI: 10.1007/s10661-008-0168-y

[2] S. T. Chan, FEM3 - A Finite Element Model for the Simulation of Heavy Gas Dispersion and Incompressible Flow, " User, s Manual, (1983).

[3] C. H. Bosanquet and J. L. Pearson, The spread of smoke and gases from chimneys, Transactions of the Faraday Society, vol. 32, pp.1249-1263, (1936).

DOI: 10.1039/tf9363201249

[4] K. M. Mok, A. I. Miranda, K. U. Leong, and C. Borrego, A Gaussian puff model with optimal interpolation for air pollution modelling assessment, International journal of environment and pollution, vol. 35, pp.111-137, (2008).

DOI: 10.1504/ijep.2008.021135

[5] F. Pasquill, The estimation of the dispersion of windborne material, The Meteorological Magazine, vol. 90, pp.33-49, (1961).

[6] M. R. Beychok, Fundamentals Of Stack Gas Dispersion (4th Edition ed. ), author-published.

[7] L. Fan, S. Yi, Z. Li, and B. Yang, Research on Toxic Gas Diffusion Simulation in Urban Areas Based on GIS, in 2009 International Conference on New Trends in Information and Service Science., 2009, pp.166-169.

DOI: 10.1109/niss.2009.170

[8] http: /www. google. com/support/forum/p/apps-apis/thread? tid=718560d8c2c913ff&hl=en, Website: Google Weather API.