Starting form the application of plume model in modeling traffic impact scope,the paper points out shortcomings of the application,modifies unreasonable content of analogical assumption,and then establishes a quantitative,practical model through reasonable assumption,which could determine traffic impact scope of a planned project.

Comparisons are done between puff model and segmented Gaussian plume model for different flow fields.

Intake port-Cylinder-Exhaust port Block-structured Grids Construction and its Dynamic Adjustment of Engine with Pentroof Combustion Room;

The algorithm study for the dispersion area of Gaussian plume model;