3篇
您的检索式：作者名="Bosen Qian"
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| 1 | Numerical and Experimental Study on Ventilation Panel Models in a Subway Passenger Compartment显示文摘The internal flow field study of car compartments is an important step in railroad vehicle design and optimization. The flow field profile has a significant impact on the temperature distribution and passenger comfort level. Experimental studies on flow field can yield accurate results but carry a high time and computational cost. In contrast, the numerical simulation method can yield an internal flow field profile in less time than an experimental study. This study aims to improve the computational efficiency of numerical simulation by adapting two simplified models—the porous media model and the porous jump face model—to study the internal flow field of a railroad car compartment. The results provided by both simplified models are compared with the original numerical simulation model and with experimental data. Based on the results, the porous media model has a better agreement with the original model and with the experimental results. The flow field parameters (temperature and velocity) of the porous media model have relatively small numerical errors, with a maximum numerical error of 4.7%. The difference between the numerical results of the original model and those of the porous media model is less than 1%. By replacing the original numerical simulation model with the porous media model, the flow field of subway car compartments can be calculated with a reduction of about 25% in computing resources, while maintaining good accuracy. | Yu Tao Mingzhi Yang Bosen Qian Fan Wu Tiantian Wang | 2019 | Engineering2019，5，2： | 9 |
| 2 | Research and development of prevention and control measures on the transmission of pathogens in compartments of passenger transport显示文摘Contagious pathogens like COVID-19 transmitted via respiratory droplets spread effortlessly in the passenger compartments of transport,significantly jeopardizing passengers’safety when taking public transportation.To date,studies on the fundamental theories of airborne droplet transmission and the engineering application of decontamination techniques are insufficient for the prevention and control of pathogens transmitting in the compartments of passenger transport.It is essential to systematically investigate the control approaches to restrain pathogens from transmitting in passenger compartments.Herein,a theoretical framework for calculating the transmission of pathogens in a complex compartment environment was proposed,and experimental platforms that satisfy the Biosafety Level-2 Laboratory safety level for compartment environment simulations were built based on a set of real train cabins.On these bases,numerical investigations on the motion of pathogen-laden droplets were conducted,and decontamination techniques were examined experimentally.Thereby,control measures on the pathogen transmission and pathogen decontamination schemes were proposed.Moreover,highly efficient decontamination devices were developed,and coping strategies for epidemic emergencies were devised.The outcomes provide theoretical and technical support for developing the next generation of transportation and the prevention and control measures cooperatively considering regular and pandemic times. | Hongqi Tian Tiantian Wang Lei Xu Miao Sha Shujun Chen Zeyun Yang Yan Zhu Dawei Chen Hengkui Li Lei Zhang Bosen Qian Xudong Tian | 2024 | Transportation Safety and Environment2024，6，1： | 0 |
| 3 | Airborne transmission of virus-laden droplets in an aircraft cabin显示文摘This study investigates the airborne transmission of virus-laden droplets generated by a cough of patients in an aircraft cabin to reveal the infection risk of taking an airplane.The influence of the ventilation system on the flow feld of the cabin was analysed to reveal its effects on the airbore transmission ofvirus-laden droplets.Meanwhile.human body heat was also considered in the simulations.The results show that hot plume due to human body hent has a significant impact on the upward movement of virus-laden droplets.The virus-laden droplets expelled by a cough can be transmitted to the region two to three rows away from the generator.Particularly,the transverse motion present in the early stage of the droplet transmission results in a high infection risk to the passengers in the same row as the patient.This work gives insight into the understanding of the airborne transmission of virus-laden droplets in the entire passenger cabin. | Yu Li Xuhui Wang Jie Yang Zemiao Zhang Chenglei Wang Bosen Qian Xudong Tian Tiantian Wang | 2023 | Transportation Safety and Environment2023，5，4： | 0 |
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