METHOD AND SYSTEM FOR PREDICTING DIFFUSION STATE OF DIFFUSED SUBSTANCE

PROBLEM TO BE SOLVED: To predict the diffusion state of a diffused substance emitted to the atmospheric air. SOLUTION: The diffused substance is replaced with a particle, the moving position of the particle generated in an emission source is found by computation, and recorded while correlating the moving position with elapsed time after the emission. An intensity data is set to indicate intensity of the particles along the elapsed time after the emission. The intensity of the particles in a time point when the particles are generated is found thereafter based on the elapsed time after the emission, referring to the intensity data, and the moving position, the elapsed time after the emission and the intensity are recorded for every particle to be correlated each other. A concentration at a prescribed time in a prescribed area is calculation-found by integrating the intensities of the particles existing in the prescribed area. COPYRIGHT: (C)2003,JPO