TY - JOUR ID - 3214 TI - Experimental and Image Processing Investigation on the Diffusion of Dust Particles in the Atmospheric Area JO - AUT Journal of Mechanical Engineering JA - AJME LA - en SN - 2588-2937 AU - Alipour Shotlou, mohammad AU - Shervani Tabar, Mohammad Taghi AU - Jafari, Moharram AD - Department of Mechanical Engineering, University of Tabriz, Iran AD - Department of Mechanical engineering, University of Tabriz, Iran AD - Tabriz University* Y1 - 2019 PY - 2019 VL - 3 IS - 2 SP - 165 EP - 172 KW - Diffusion KW - Dust particles KW - Saltation KW - Image processing KW - ENVIRONMENT DO - 10.22060/ajme.2018.14359.5725 N2 - The diffusion and transfer of dust particles in the atmospheric area were investigated with experimental and image processing methods. In a flat field, the rising of dust particles into the   air by plowing the field with a tractor and their spreading along the  surrounding environment as  a  real model of dust diffusion in the atmospheric area. The experiments carried out for specifying the particle-size distribution of the bed dust and its density. The experimental photos of dust diffusion were analyzed by image processing. The intensity of the diffusion of dust particles in the atmospheric area at the different roughness of surfaces for the different speeds of the tractor movement was obtained. The roughness of the surface increases the impact threshold and reduce the number of splashing particles. As particles velocities increase, the particles height increases and the proportion slope decreases at the high velocities. A relative concentration parameter Cα was defined. The results of this study compared with previous works based on this relative concentration. The concentration of dust particles decreases exponentially by increasing up to a certain height and after this height, changes in concentration are minor. Also, the role of mid-air collisions is significant, especially at high speeds. UR - https://ajme.aut.ac.ir/article_3214.html L1 - https://ajme.aut.ac.ir/article_3214_ec28a059b5970feebd692825e2a6ef29.pdf ER -