TY - JOUR AU - Duan, Zhenya AU - Lan, Zhujun AU - Su, Jin AU - Wang, Kai AU - Zhou, Chi AU - Zhang, Junmei PY - 2019/10/30 Y2 - 2024/03/29 TI - Computational Method Study on Drag Coefficient of Butterfly Porous Fence JF - Chemical Engineering Transactions VL - 76 SP - 85-90 SE - Research Articles DO - 10.3303/CET1976015 UR - https://www.cetjournal.it/index.php/cet/article/view/CET1976015 AB - To study the drag coefficient of butterfly porous fence, this study proposes the computational model of butterfly porous fence based on the wind tunnel experiment. Effects of wind speed, porosity and hole diameter on the drag coefficient of the butterfly porous fence are investigated through the ANSYS Fluent. Under different wind speeds, the measurement results of the flow field behind the porous fence by the micro-particle image velocimetry (PIV) technology are found to be in good agreement with the numerical simulation. The numerical model can be considered correct and the simulation method is reasonable. Through the analysis of the simulation, research groups obtained some conclusions. Wind speed has almost no effect on drag coefficient when the maximum wind speed is over 10.0 m/s. The drag coefficient of the butterfly porous fence decreases gradually with the increase of porosity. Based on the simulation, the formula is established among drag coefficient, porosity and hole diameter when d is 6.6 mm ~ 9.5 mm. The research provides some theoretical basis for the butterfly porous fence engineering design. At the same time, it can effectively suppress dust diffusion to lighten the pollution of air. ER -