【作者】 王雪； 薛郁； 岑炳玲； 章一才； 张鹏；

【Author】 Wang Xue;Xue Yu;Cen Bing-ling;Zhang Yi-Cai;Zhang Peng;Institute of Physical Science and Technology, Guangxi University;

【机构】 广西大学物理科学与工程技术学院；

【摘要】 本文提出混合交通流元胞自动机NaSch模型的排放模型,研究混合交通流污染物的排放。应用混合交通流元胞自动机模型和污染物排放公式进行数值模拟计算,不同混合比和不同运动状态下的车辆的污染物排放。结果表明,车辆混合比越大,颗粒物排放越多。引入车辆状态的分布,对不同运动状态车辆的污染物排放情况作合理的解释,研究表明在车辆混合比较大时,拥堵状态的减速车辆对污染物排放影响最大,其排放的污染物最多;拥堵长车越多,排放就越大。更多还原

【Abstract】 Based on mixed NaSch traffic flow model and the empirical formula of automobile exhaust emissions, emissions of particulate matter（PM）, CO₂, NOx and VOC are investigated with consideration of the different movement conditions, mixing ratios, the maximum velocity and lengths of vehicle. Traffic characteristics from free-flow to congestion determine pollutant emissions. Emissions of mixed vehicles increase as the mixing ratio Cnincreasing. The more the number of the long vehicle increases, the more the emissions. Emissions in the different dynamic state are discussed in detail by introducing the distribution functions for three types of motion states. Results show that accelerating and decelerating vehicles in the congested state have a great impact on emissions, but decelerating vehicles can emit the most pollutants.更多还原