湖南大学学报（自然科学版）2012，Vol.39Issue(10)：79-86,8.
矿热炉塌料事故CO扩散非稳态数值模拟
Unsteady-numerical Simulation of CO Diffusion in Submerged Arc Furnace during Collapse
摘要
Abstract
Fluent software was used to simulate the wind flow state and CO diffusion in submerged arc furnace during collapse, where a three dimensional k ～ ε model was adopted, and the effect of buoyancy was taken into consideration. The simulation results show that wind flow for each respiratory surface can be divided into three zones, namely, mainstream zone, eddy zone and stagnation zone. Eddy zones appear at chimney sites while stagnation zones can be found at the wall of mainstream outlet. From the analysis of CO diffusion and distribution at different wind velocities and directions, it can be concluded that CO concentration decreases from eddy center to periphery driven by mainstream entrainment. Regression analysis shows that ventilation time decreases exponentially with wind speed increase.关键词
车间/CFD模拟/CO扩散/呼吸面/通风时间Key words
workshop/ CFD simulation/ CO diffusion/ respiratory surface/ ventilation time分类
资源环境引用本文复制引用
李立清,黄贵杰,胡蔷,刘峥,范耀煌,袁国华,黄燕..矿热炉塌料事故CO扩散非稳态数值模拟[J].湖南大学学报（自然科学版）,2012,39(10):79-86,8.基金项目
国家自然科学基金资助项目(20976200) （20976200）
湖南省技能减排重大专项项目(08SK1003,2009FJ1009) （08SK1003,2009FJ1009）
