Numerical Simulation on Suspended Fine Particulate PM10 of Fugitive Dust at Ta-An River near Estuary

• Main Authors: Kuo-Jen Yu, 尤國任
• Other Authors: Dr. Ching-Piao Tsai
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/17239057163829887040

碩士 === 國立中興大學 === 土木工程學系所 === 99 === This thesis is based on Fugitive Dust Model (FDM) to ascertain the consistency of the suspended fine particulate PM10 distributed in the study area, the mouth of Da-an River, by the simulation of the behavior of fugitive dust according to the area meteorological observation. River fugitive dust is particle pollutant in a liner area, a kind of Gaussian model, and it is different with gaseity (NOX, VOC) or inert pollutant (SO2) by photochemical reaction. Therefore, this paper simulates the distribution of PM10 in the particle marching region by the FDM, according to the meteorological data, such as wind direction, wind velocity, atmospheric temperature, and atmospheric mixing layers, etc. The standard deviation Sigma σ base on the including linear regression, polynomial regression and log regression are adopted to select the proper meteorological data. The simulated results show that the concentration of PM10 is significantly related with the wind direction and wind velocity. When the subject place is located on the downwind of the pollution source, the consistency number of PM10 is higher if the subject place is closer to the pollution source, and the same result if the wind velocity much veer the subject place.