%0 Journal Article
%T Small-grid analysis of discrete model for evacuation from a hall
%J Physica A: statistical mechanics and its applications
%D 2007
%A Weng, W.G.
%A Pan, L.L.
%A Shen, S.F.
%A Yuan, H.Y.
%V 374
%N 2
%P 821-826
%X In this paper, small-grid analysis of discrete model is described, and simulation that some walkers leave a hall is carried out to check the effects of different desired walk velocities with the same walk time at a time step, and different numbers of small grid at a time step with the same desired walk velocity, on the evacuation time. The simulation results show that small-grid analysis have reproduced some typical phenomena of evacuation, including jam, block and faster-is-slower, etc. as good as the continuum model, i.e., the social force model, but with high simulation efficiency. In addition, the power-law distribution of evacuation flow duration and block duration with the different desired walk velocities is found. The block duration with different numbers of small grid at a time step also takes on power-law characteristics, only their intercepts in log-log coordinates are different.<p />
%G 
%I Elsevier Publishing
%@ 0378-4371
%U http://dx.doi.org/10.1016/j.physa.2006.08.003