Model Study On Atmospherical Pollute Dispersion In Terrain Of Long And Narrow Valley

Heretofore, it is impossible to provide a model to deal with all kinds of diffusion questions. Along with the fast developing industry, urgently, it need to more study on atmopherical diffusion model in terrain of long and narrow valley. This thesis discuss that, through analysing theory about Planetary Boundary Layer(PBL), Temperature Field and Turbulent Structure, base on Conservation Of Mass and theory of Grads dispersion, educe the three-dimensional basal model. And this thesis disuss the method of confirming interrelated parameter in diffusion model. According characteristic of long and narrow valley, emend the basal model and make it to accord with dispersion rule of valley terrain.Use the software MATLAB, compile program to simulate the emented model, and analyse and compare to data, emend the model more to apply it to practice. Throght analysing a lot of data, validate the emended model and accomplish theatmospherical dispersion model of long and narrow valley to simulate the rule of dispersion and distribution of chroma, provide the study mothed of improve and emend atmospherical dispersion model to readers.