激波管的调试与甲烷着火延迟时间的测量  

Calibration of shock tube and determination of ignition delay time formethane for methane

作　　者：张尊华[1,2] 李敬瑞[1,2] 万琦[1,2] 李格升[1,2] Zhang Zunhua Li Jingrui Wan Qi Li Gesheng(Key Laboratory of High Performance Ship Technology Ministry of Education, School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China)

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,湖北武汉430063 [2]武汉理工大学能源与动力工程学院,湖北武汉430063

出　　处：《华中科技大学学报（自然科学版）》2017年第7期56-60,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51479149;51509198)

摘　　要：为了验证本实验室新建造激波管的稳定性和可靠性,对该激波管的激波衰减率、非理想气体效应等物理特性进行了实验研究.结果表明:该激波管的激波衰减率为1.0%/m^2.2%/m,与国际上其他激波管激波衰减率在同一范围;非理想气体效应造成实验区的实际温度比理论温度要低;由于边界层效应与燃烧波的影响,侧壁的着火延迟时间比端壁要短.侧壁处测得的甲烷着火延迟时间与文献中侧壁处数据以及基于USC2.0机理模拟的结果表现出较好的一致性,端壁处测得的甲烷着火延迟时间在低温条件下与文献中端壁处数据符合较好,在高温条件下存在一定的偏差.To calibrate and validate the reliability of the shock tube, physical characteristics such as attenuation ratio and non ideal gas effect were studied, and the experimental results of methane were compared with data in open literatures and calculation results. Research results show that the attenua tion ratio of shock tube used in the present study is 1.0%/m-2.2%/m, which is in the same range with representative shock tube in worldwide. Actual temperature of experimental area is lower than theoretical temperature because of the non-ideal gas effect. The data measured in sidewall is shorter than measured in end wall because of boundary layer effect and burning wave. The ignition delay time of methane measured via sidewall agrees well with the data in literatures and calculated results using USC 2.0 mechanism, and the data measured via end wall agrees well with the data in literatures at low temperature, but is shorter than the data in literatures at high temperature

关 键 词：激波管 激波衰减率 非理想气体效应 甲烷 着火延迟时间 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]