氢/氧/惰性气体预混气可燃极限数值与试验研究  

Numerical simulation and experimental research on flammability limits of hydrogen-oxygen-inert gas mixtures

作　　者：杜宁 杨岩 丁兆波 王希杰 王朝晖[1] 张帆 田原[1] Du Ning;Yang Yan;Ding Zhaobo;Wang Xijie;Wang Zhaohui;Zhang Fan;Tian Yuan(Beijing Aerospace Propulsion Institule,Beijing 100076,China;Academy of Aerospace Propulsion Technology,Xi’an 710100,China)

机构地区：[1]北京航天动力研究所,北京100076 [2]航天推进技术研究院,西安710100

出　　处：《低温工程》2022年第5期59-64,共6页Cryogenics

摘　　要：基于辐射热损失理论提出了一种新的氢/氧/惰性气体可燃极限计算方法,并通过试验验证了该方法的准确性。数值计算结果表明,对于氢氧氮预混气体,氢气的可燃极限的体积分数基本不受氮气体积分数的影响。而对于氢氧氩/氦预混气体,随着氦气/氩气体积分数增加,氢气可燃极限体积分数减小。一定范围内压力和温度对氢氧氦富燃可燃极限影响较小,对贫燃可燃极限影响较大。计算贫燃极限结果与试验结果误差为15%左右,富燃极限误差小于2%,满足工程设计使用要求。Based on the radiant heat loss theory,a new method for calculating the flammability limit of hydrogen-oxygen-inert gas mixtures is proposed in this paper,and its accuracy is verified by experiments.The numerical results show that the volume fraction of the flammability limit of hydrogen is not affected by the volume fraction of nitrogen for hydrogen-oxygen-nitrogen mixtures.As the volume fraction of helium or argon increases,the flammability limit volume fraction of hydrogen decreases.In a certain range,pressure and temperature have little influence on the flammability limit of hydrogen-oxygen-helium rich combustion,but have great influence on the flammability limit of lean combustion.The error between the calculated lean burn limit and the experimental results of Kumar is about 15%,and the error of rich burn limit is less than 2%,which meets the requirements of engineering design.

关 键 词：辐射热损失 氢氧 惰性气体 可燃极限 

分 类 号：V511.6[航空宇航科学与技术—航空宇航推进理论与工程]