Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study

Effective maintenance of ancient buildings is paid more and more attention worldwide. Many ancient buildings with high inheritance value were gradually destroyed, especially for murals in the open tombs. The bioaerosol particles (BPs) are the major source of contamination in murals and visitor walki...

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Autores principales:	Zhijian Liu, Minnan Wu, Hongwei Cao, Yongxin Wang, Rui Rong, Hangyao Zhu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ancient buildings bioaerosol particles visitor walking airflow disturbance mural conservation Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/435107050e1f4fe3aa304cda1e924571
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spelling	oai:doaj.org-article:435107050e1f4fe3aa304cda1e9245712021-11-25T16:59:59ZInfluence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study10.3390/buildings111105382075-5309https://doaj.org/article/435107050e1f4fe3aa304cda1e9245712021-11-01T00:00:00Zhttps://www.mdpi.com/2075-5309/11/11/538https://doaj.org/toc/2075-5309Effective maintenance of ancient buildings is paid more and more attention worldwide. Many ancient buildings with high inheritance value were gradually destroyed, especially for murals in the open tombs. The bioaerosol particles (BPs) are the major source of contamination in murals and visitor walking could increase this hazard. In order to study the impact of visitors walking on the air flow and the distribution of BPs in the typical tomb chambers, the <i>k-ε</i> and Lagrangian discrete phase model were adopted. The walking visitor was described by the dynamic mesh, and the concentration of BPs in the simulation was verified by experimental sampling. The distribution and migration mechanism of contamination in the chamber were dynamically analyzed. The results indicate that the denser vortex generated when a visitor was walking, and the concentration of BPs changed obviously. Therefore, the number of BPs deposited on some precious murals increased and the contamination location shifted in the direction of visitor walking. In addition, the deposition time of BPs was lagging which would cause potential risk. This research can provide scientific basis for reducing murals contamination during visitor visiting and a reference for the maintenance of ancient buildings.Zhijian LiuMinnan WuHongwei CaoYongxin WangRui RongHangyao ZhuMDPI AGarticleancient buildingsbioaerosol particlesvisitor walkingairflow disturbancemural conservationBuilding constructionTH1-9745ENBuildings, Vol 11, Iss 538, p 538 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ancient buildings bioaerosol particles visitor walking airflow disturbance mural conservation Building construction TH1-9745
spellingShingle	ancient buildings bioaerosol particles visitor walking airflow disturbance mural conservation Building construction TH1-9745 Zhijian Liu Minnan Wu Hongwei Cao Yongxin Wang Rui Rong Hangyao Zhu Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
description	Effective maintenance of ancient buildings is paid more and more attention worldwide. Many ancient buildings with high inheritance value were gradually destroyed, especially for murals in the open tombs. The bioaerosol particles (BPs) are the major source of contamination in murals and visitor walking could increase this hazard. In order to study the impact of visitors walking on the air flow and the distribution of BPs in the typical tomb chambers, the <i>k-ε</i> and Lagrangian discrete phase model were adopted. The walking visitor was described by the dynamic mesh, and the concentration of BPs in the simulation was verified by experimental sampling. The distribution and migration mechanism of contamination in the chamber were dynamically analyzed. The results indicate that the denser vortex generated when a visitor was walking, and the concentration of BPs changed obviously. Therefore, the number of BPs deposited on some precious murals increased and the contamination location shifted in the direction of visitor walking. In addition, the deposition time of BPs was lagging which would cause potential risk. This research can provide scientific basis for reducing murals contamination during visitor visiting and a reference for the maintenance of ancient buildings.
format	article
author	Zhijian Liu Minnan Wu Hongwei Cao Yongxin Wang Rui Rong Hangyao Zhu
author_facet	Zhijian Liu Minnan Wu Hongwei Cao Yongxin Wang Rui Rong Hangyao Zhu
author_sort	Zhijian Liu
title	Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
title_short	Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
title_full	Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
title_fullStr	Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
title_full_unstemmed	Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study
title_sort	influence of the visitor walking on airflow and the bioaerosol particles in typical open tomb chambers: an experimental and case study
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/435107050e1f4fe3aa304cda1e924571
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Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study

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