Development of a novel miniature detonation-driven shock tube assembly that uses in situ generated oxyhydrogen mixture
Development of a novel miniature detonation-driven shock tube assembly that uses in situ generated oxyhydrogen mixture
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DOI：
10.1063/1.4960961
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发表时间：
2016-08-01
影响因子：
1.6
通讯作者：
Jagadeesha, G.
中科院分区：
文献类型：
--
作者：
Janardhanraj, S.;Jagadeesha, G.
提出并论证了一种利用原位氢氧发生器在实验室密闭环境中以安全、可重复和可控的方式产生微型冲击波的新概念。该方法被证明比现有方法更有利，因为存在改变冲击波强度的灵活性，不需要储存高压气体，并且存在最小的废物处理。所需量的氢氧混合物是使用碱性电解产生的，碱性电解产生化学计量的氢气和氧气。新设计的氢氧发生器的氢氧混合物的生产率被发现是约8毫升/秒的实验。氢氧发生器连接到一个专门设计的10平方毫米微型激波管组件的驱动器部分。采用CANTERA软件包编制的数值计算程序对微型激波管中驱动气体的特性进行了预测。这个预测沿着与1-D激波管理论被用来计算所产生的冲击波的属性，并匹配合理地与实验获得的值氢氧混合物填充压力小于2.5巴。微型激波管采用了改进的三叶草夹具组件，以方便快速更换隔膜，并取代了更笨重的螺母和螺栓系统的紧固部件。氢氧爆轰驱动的微型激波管的多功能性为激波辅助的跨学科应用开辟了新的视野。出版社：AIP Publishing
A novel concept to generate miniature shockwaves in a safe, repeatable, and controllable manner in laboratory confinements using an in situ oxyhydrogen generator has been proposed and demonstrated. This method proves to be more advantageous than existing methods because there is flexibility to vary strength of the shockwave, there is no need for storage of high pressure gases, and there is minimal waste disposal. The required amount of oxyhydrogen mixture is generated using alkaline electrolysis that produces hydrogen and oxygen gases in stoichiometric quantity. The rate of oxyhydrogen mixture production for the newly designed oxyhydrogen generator is found to be around 8 ml/s experimentally. The oxyhydrogen generator is connected to the driver section of a specially designed 10 mm square miniature shock tube assembly. A numerical code that uses CANTERA software package is used to predict the properties of the driver gas in the miniature shock tube. This prediction along with the 1-D shock tube theory is used to calculate the properties of the generated shockwave and matches reasonably well with the experimentally obtained values for oxyhydrogen mixture fill pressures less than 2.5 bars. The miniature shock tube employs a modified tri-clover clamp assembly to facilitate quick changing of diaphragm and replaces the more cumbersome nut and bolt system of fastening components. The versatile nature of oxyhydrogen detonation-driven miniature shock tube opens up new horizons for shockwave-assisted interdisciplinary applications. Published by AIP Publishing.