Study On Air Distribution Of Respiratory Zone In A BSL-3 Experimental Staff

As the requirements for quality control become more and more stringent,the demand for constant temperature and humidity environments is increasing,and the fields of application are becoming wider and wider.The three-level biosafety laboratories(ie,the BSL-3 laboratory)are highly dangerous to the human body,animals,plants,or the environment.Although there are usually preventive and therapeutic measures,the experimenters will also be exposed to harmful gases when working in the laboratory.An accident can cause huge losses.Therefore,it is of great significance to study the distribution of partial air flow in the breathing zone of experimental personnel in the third-level biosafety laboratory.The research in this paper is based on this background.It simulates the research status at home and abroad,the distribution of air flow in the BSL-3 laboratory,and the airflow distribution of the standing and sitting breathing zones of the experimenter.Then it summarizes the software development and application based on these models,introduces the Fluent software based on CFD(Computational Fluid Dynamics)method used in this study,and several basic control equations and turbulence models used in the software.The innovative point of this article is to use Fluent software to simulate the distribution of air flow in the respiratory belt of experimental personnel based on these theories.From the third chapter,starting from the actual work site,the professional Fluent pre-processing software Gambit software was used to model the laboratory geometry,and it was meshed and the boundary type was defined.Then import Fluent software,through the solver selection,set the control equations and turbulence model and related parameters,simulation calculations,get visual graphics,intercept the convergence of the state,the human standing breathing height Z = 1.5m and seated breathing height Z = 1.2m for analysis and suggestions for placement and construction of laboratory instruments.In the end,we summarize the work of the full text and discuss the future prospects.