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Influence of Human Activities on Airflow and Pollutant Distribution in the Waiting Area in a General Hospital

  • Min ChenEmail author
  • Yintao Yin
  • Jishun Zhang
  • Chuanhui Zhou
Conference paper
  • 263 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Impacts of human activities on the indoor air quality of hospitals almost focus on operating theaters and isolation rooms. Few studies pay attention to the normal outpatient department such as waiting areas, where crowds always gather. By utilizing unsteady CFD simulation with SST k − ɛ model and dynamic mesh, this paper investigates how the human activities of the health-care worker (HCW) and patients influence the airflow and pollutant distribution in the waiting area of an outpatient department in a general hospital in Wuhan. The results indicate that wake flow caused by legs moving forward is obviously weaker than that of arms and body with the model of swinging arms and legs when compared to the simplified model of human walking. The swinging arms and legs can accelerate the wake flow velocity, even larger than the human moving speed. The attenuation of wake flow velocity is also rapid. The increase in the human moving speed can speed up the spread of the pollutants, but cannot change the pollutant concentration.

Keywords

Human activities Dynamic simulation Pollutant concentration Waiting area General hospital 

Notes

Acknowledgements

The project was supported by Young and Middle-aged Talent Project of Educational Commission of Hubei Province (Number 20161112).

References

  1. 1.
    Chow, T.-T., Wang, J.: Dynamic simulation on impact of surgeon bending movement on bacteria-carrying particles distribution in operating theatre. Build. Environ. 57, 68–80 (2012)CrossRefGoogle Scholar
  2. 2.
    Hang, J., Li, Y., Liu, R.Q.: The influence of human walking on the flow and airborne transmission in a six-bed isolation room: tracer gas simulation. Build. Environ. 77, 119–134 (2014)CrossRefGoogle Scholar
  3. 3.
    J. Wang, T.-T. Chow (2011) Numerical investigation of influence of human walking on dispersion and deposition of expiratory droplets in airborne infection isolation room. Build. Environ. 46, 1993–2002 (2011)CrossRefGoogle Scholar
  4. 4.
    Wu, Y., Gao, N.: The dynamics of the body motion induced wake flow and its effects on the contaminant dispersion. Build. Environ. 82, 63–74 (2014)CrossRefGoogle Scholar
  5. 5.
    Tao, Y., Inthavong, K., Tu, J.: A numerical investigation of wind environment around a walking human body. J. Wind Eng. Ind. Aerodyn. 168, 9–19 (2017)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Min Chen
    • 1
    Email author
  • Yintao Yin
    • 2
  • Jishun Zhang
    • 1
  • Chuanhui Zhou
    • 1
  1. 1.School of Urban ConstructionWuhan University of Science and TechnologyWuhanChina
  2. 2.Central South, Architectural Design Institute Co. LtdWuhanChina

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