摘要
简单介绍了交通流理论的发展概况 ,指出交通流理论在目前有着广阔的发展前景 研究了交通流的流体模型理论 ,从速度 -密度关系出发 ,求得车流密度的一般表达式 由此表达式分析车流密度的变化情况 ,得出车流密度的时空图 同时对有匝道的流体模型理论 ,给出了一种求解流体模型方程的差分格式 ,从而迭代出了车流密度的变化情况 。
Briefly introduces the development of traffic flow theory and shows that traffic flow theory has wide development future. From the relation between speed and density, the fluid model theory of traffic flow is studied and the general expression of traffic flow density is derived. Through the expression, the change of traffic flow density is analysed and space time diagram of traffic flow density is obtained. As for traffic flow density with ramp, a difference scheme for solving the equation of fluid model theory is given,the change of traffic flow density is derived through iterative algorithm, and the space time diagram of traffic flow density is also given.
出处
《江苏大学学报（自然科学版）》
EI
CAS
2002年第5期19-22,共4页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目 (5 0 0 780 15 )
