Abstract
In recent years methods for the assessment of environmental impacts of air contaminants released and dispersed in a region of complex terrain have been focused on. For a variety of economic and geographic reasons, industrial emmisions have been released at low heights with respect to the terrain features. The question, therefore, of how well air pollutants will disperse when transport processes are constrained by terrain features has been issued. In this respect, we have been searching for a practical model to predict pollutant dispersion in complex terrain together with experiments persued in such region.
This paper presents major part of a prediction system for air pollution-one of the serious matters exerting an adverse effect on the living environment as a result of, for instance, construction of incineration facilities-taking the effect of complex terrain into consideration.
In this system, the field of wind flow in the area concerned is determined by the improved potential flow model. In connection with the system the gaseous tracer experiments were conducted to gather the dispersion characteristics data in the region of complex terrain. These data were also used to confirm the result of the system by comparisons of calculated values with measured ones. As a result of the estimation of wind field, the proposed model is found to be applicable to the real problem.
