School of Civil Engineering, Hefei University of Technology, Hefei 230009, China.
Department of Engineering Physics, Institute for Public Safety Research, Beijing Key Laboratory of City Integrated Emergency Response Science, Tsinghua University, Beijing 100084, China.
Int J Environ Res Public Health. 2018 Nov 21;15(11):2603. doi: 10.3390/ijerph15112603.
Based on frequently used internal partitions in offices, the effects of pollutant source characteristics and an internal partition on airflow and contaminant distribution under different ventilation modes are studied in this paper. The indoor flow field measurement is implemented in a 1:1 single environmental chamber under different ventilation patterns, and then the numerical model is established. The numerical method is verified and analyzed by comparing the measured and simulated results. According to the verification results, the numerical simulation is introduced to study the influence of different supply and return air mixes and pollutant source distributions on the flow field and diffusion performance with an internal partition. The indoor flow field and concentration distribution under different conditions are compared, and the discharge efficiency under different working conditions is analyzed. The results indicate that internal partitions have a greater influence on the down-supply up-return ventilation mode than the floor-supply up-return and top-supply down-return ventilation mode. Furthermore, if the room is zoned, the effect of source position is larger under the down-supply up-return ventilation mode than under the other two modes.
基于办公室中常用的内部隔断，本文研究了在不同通风模式下，污染源特性和内部隔断对气流和污染物分布的影响。在不同通风模式下，在 1:1 的单环境室中进行室内流场测量，然后建立数值模型。通过比较测量和模拟结果，对数值方法进行了验证和分析。根据验证结果，采用数值模拟方法研究了不同送风与回风混合比和污染源分布对带内部隔断的流场和扩散性能的影响。比较了不同条件下的室内流场和浓度分布，并分析了不同工况下的排放效率。结果表明，内部隔断对下送上回通风模式的影响大于地板送风上回和顶送风下回通风模式。此外，如果房间分区，在下送上回通风模式下，源位置的影响比其他两种模式更大。
