技术中心

【英文篇名】 Numerical study of indoor spittle transportation 【作者中文名】 赵彬; 张昭; 李先庭; 【作者英文名】 By Zhao Bin ★; Zhang Zhao and Li Xianting★Tsinghua University; Beijing; China; 【作者单位】 清华大学; 【文献出处】 暖通空调, Hv SARS; 数值模拟; 通风; 【英文关键词】 spittle; SARS; numerical simulation; ventilation; 【摘要】 人体口腔飞沫容易携带许多病毒和细菌微生物。针对飞沫产生的不同条件 (如呼气、喷嚏等 ) ,对其在室内的传播和扩散过程进行数值模拟分析。模拟结果说明 ,适当的换气次数可以有效削弱由正常呼吸产生的口腔飞沫 ,但是一般的空调通风系统不能有效削弱由于剧烈咳嗽或打喷嚏而产生的口腔飞沫。 【英文摘要】 Spittle may carry various virus and bacteria. Presents numerical simulation analysis on the dispersion and distribution of indoor spittle generated by regular exhale and cough or sneeze. The results show that sufficient air exchange rate can successfully remove most droplets generated by regular exhale process, however, commonly used air conditioning system cannot be effectively used to deal with droplets generated during coughing or sneezing.