Abstract
This chapter studies the concentration distribution and particle tracks of students talking continuously in a classroom with two air distribution methods, including mixing ventilation (MV) and displacement ventilation (DV) using CFD simulations. The classroom is occupied by 10 students with a seating arrangement of 5 rows and 2 columns. RNG k-ε model is used to simulate the velocity field and temperature field, and the Lagrange method is used to deal with the particles. The simulation results indicated that the DV could remove the respiratory aerosol droplets and minimize the risk of infections effectively compared with MV. Under the same concentration threshold, the contaminant spread farther, when the flow field is weak Furthermore, high particle-releasing velocity would make the contaminant stay in the classroom for a long time.
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References
Qian H, Li Y, Nielsen PV et al (2009) Spatial distribution of infection risk of SARS transmission in a hospital ward. Build Environ 44:1651–1658
Li Y, Leung GM, Tang JW et al (2007) Role of ventilation in airborne transmission of infectious agents in the built environment-a multidisciplinary systematic review. Indoor Air 17:2–18
Cheremisinoff NP (2002) Handbook of air pollution prevention and control. Butterworth-Heinemann, pp 188–280
Qian H, Li Y (2010) Removal of exhaled particles by ventilation and deposition in a multibed airborne infection isolation room. Indoor Air 20(4):284–297
Zhang L, Li Y (2012) Dispersion of coughed droplets in a fully-occupied high-speed rail cabin. Build Environ 47:58–66
Zhu S, Srebric J, Spengler J et al (2012) An advanced numerical model for the assessment of airborne transmission of influenza in bus microenvironments. Build Environ 47:67–75
Yan W, Zhang Y, Sun Y et al (2009) Experimental and CFD study of unsteady airborne pollutant transport within an aircraft cabin mock-up. Build Environ 44:34–43
Gao N (2006) Numerical and experimental study of personalized ventilation. The Hong Kong Polytechnic University
Deng W, Shen J, Tang X (2005) The Study on the Optimization of Indoor Air Distribution for SARS Isolation Wards. Build Energy Environ 24(2):9–14. (In Chinese)
Nicas M, Nazaroff W, Hubbard A (2005) Toward understanding the risk of secondary airborne infection: emission of respirable pathogens. J Occup Environ Hyg 2:143–154
Acknowledgments
This research was supported by The Natural Science Foundation of Liaoning (20101088). Scientific and technical fund project subsidy of Shenyang City (F11-264-1-17), and scientific and technical fund project subsidy of Shenyang City (F10-208-1-00).
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Zhang, Y., Feng, G., Huang, K., Cao, G. (2014). Numerical Simulation of Aerosol Particles Distribution in a Classroom. In: Li, A., Zhu, Y., Li, Y. (eds) Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning. Lecture Notes in Electrical Engineering, vol 263. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39578-9_22
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DOI: https://doi.org/10.1007/978-3-642-39578-9_22
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