Application of Improved Nonlinear Least Squares in Smoke Flow and Distribution during Gas Explosion

摘要：

Predicting the concentration and distribution of poisonous gas in the mixture after gas explosion in roadway is greatly significant to safety management and staff protection.Using the improved nonlinear least squares method,the optimized conditions and characteristics,nonlinear fitting are carried out on poisonous gas concentration data and the fitting formula are deduced.Using this formula and the ones in the references,the CO concentration and distribution are analyzed and studied.Utilizing the improved nonlinear least squares method and the fitting formula,the CO concentration and distribution are simulated.The results show that the fitting formula deduced and in the reference have been made on the more desired results in the application of simulation and comparison.It is concluded and proved that the nonlinear least-squares method,the optimization conditions and features and fitting formula are correct in comparison and simulation.

关键词： improved nonlinear least squares method optimal condition smoke flow CO concentration and distribution gas explosion.

作者: Zhi-ming Qu Tong-bin Ma Jian-sheng Ma

作者单位: School of Civil Engineering,Hebei University of Engineering,Handan City,Hebei Province,056038,China Yongli Pharmaceutical Jilin CO.,LTD,Baishan City,Jilin Province,134300,China

会议类型: 国际会议

会议名称: International Conference on Modelling,Identification and Control(模拟、鉴定、控制国际会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）