Simulation Of Indoor Thermal Environment And Thermal Comfort Of Human Body

With the rapid development of science and technology,the gradual improvement of people's quality of life,so that people are more and more high demand for their indoor environment,indoor thermal environment and thermal comfort has been growing concern.On the one hand,due to the economic development that the environment is destroyed,the haze days more and more;on the other,hand,the modern people spent indoors for a long time,and a comfortable indoor environment not only to ensure the health of the human body,and a comfortable indoor environment can maintain a higher people 'working efficiency.Because it is necessary to study the indoor thermal environment and human comfort.Therefore,the indoor thermal environment on the body temperature distribution and regulation of research is essential,there are a lot of research in home and abroad.At present,there are few studies on the surface temperature distribution of human body,and most of them do not use convection,radiation and human body thermal equilibrium coupling method to simulate the human body temperature distribution.This paper focuses on the method of coupling solution,which aims to obtain the true temperature distribution of human body surface.Based on the biohealth equation of the human body,this paper proposes a two-node model,which presents the temperature distribution of the convection,radiation and human thermal equilibrium coupling method and the thermal environment of the air supply room.The SIMPLE algorithm is used to calculate the turbulence.The Reynolds stress model(RSM)is used to consider the influence of human convection and radiation.Coupling solution and solar ray tracing method are used to calculate the thermal environment around the human body.The indoor velocity distribution,temperature distribution and its distribution were studied,and the values of indoor PMV and PPD were calculated,and the thermal comfort of the indoor staff was analyzed.The study is based on the Fluent software as the platform,with a space air conditioning office in winter condition in Shanghai area as the research object,according to the office of the establishment of three-dimensional model,There is a man in the office of the model,and then divided into mesh,grid file FLUENT software,then the corresponding parameters according to the related data set was simulated according to the simulation method of thermal coupling,,finally the velocity field,temperature field,humidity field and PMV-PPD data value was.In addition,the use of temperature and humidity measuring instrument,infrared imager,thermal wind instrument for office space and body surface temperature,humidity and velocity data were measured,then the experimental results and the simulation results are compared.In order to verify the authenticity and feasibility of this method.At the same time,we use Tecplot,Origin and other related data processing software to simulate the results more intuitive display and data extraction and analysis.After that,the model of small space and single player is extended to the model of large space and multi personnel,and then the indoor thermal environment and the thermal comfort of each person are analyzed.In this study,using the simulation method to simulate the human thermal coupled heat and moisture distribution,then can simulate the indoor thermal comfort of human body,and the combination of experiments can be found that the simulation results agree well with the experimental results,it is proved that this method is feasible,and provides the research method but also for the evaluation of thermal comfort air conditioning office.