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Investigation of Coronavirus deposition in Realistic Human Nasal Cavity and Impact of Social Distancing to Contain COVID-19:A Computational Fluid Dynamic Approach

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Computer Modeling in Engineering & Sciences 2020年第12期125卷 1185-1199页

作者： Mohammad Zuber John Valerian Corda Milad Ahmadi BSatish Shenoy Irfan Anjum Badruddin Ali E.Anqi Kamarul Arifin Ahmad S.M.Abdul Khader Leslie Lewis Mohammad Anas Khan Sarfaraz Kamangar Department of Aeronautical&Automobile Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal576104India Department of Mechanics of Solids Surfaces and SystemsFaculty of Engineering TechnologyUniversity of TwenteEnschede7522The Netherlands Mechanical Engineering Department College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Aerospace Engineering Universiti Putra MalaysiaSerdang43400Malaysia Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal576104India Department of Paediatrics Kasturba Medical College&HospitalManipal576104India Department of Mechanical Engineering Jamia Millia IslamiaDelhi110025India

The novel coronavirus responsible for COVID-19 has spread to several countries within a considerably short *** virus gets deposited in the human nasal cavity and moves to the lungs that might be *** per safety guidelines by theWorld Health Organization(WHO),social distancing has emerged as one of the major factors to avoid the spread of ***,different guidelines are being followed across the countries with regards to what should be the safe ***,the current work is an attempt to understand the virus deposition pattern in the realistic human nasal cavity and also to find the impact of distance that could be termed as a safety *** study is performed usingComputationalFluid Dynamics as a solution tool to investigate the impact of COVID-19 deposition(i)On a realistic 3D human upper airway model and(ii)2D social distancing protocol for a distance of 0.6,1.2,1.8,and 2.4 *** results revealed that the regional deposition flux within the nasal cavity was predominantly observed in the external nasal cavity and nasopharyngeal *** flushing of these regions with saltwater substitutes can limit contamination in healthy *** safe distancing limit estimated with 1 m/s airflow was about 1.8 *** extensive deposition was observed for distances less than 1.8 m in this study,emphasizing the fact that social distancing advisories are not useful and do not take into account the external dynamics associated with airflow.

关键词： COVID-19 upper respiratory tract virus deposition social distancing

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