Hargis Joshua W, Guo Bing, Petersen Eric L
J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, USA.
Mechanical Engineering Program, Texas A&M University at Qatar, Doha, Qatar.
Rev Sci Instrum. 2020 Dec 1;91(12):124102. doi: 10.1063/5.0028449.
A new shock-tube facility for studying gas-phase and condensed-phase mixtures has been developed for the investigation of various hydrocarbon species at the Qatar campus of Texas A&M University. At present, the facility is intended for studying combustion behaviors of long-chain hydrocarbon molecules and mixtures thereof under realistic engine conditions. Equipped with an aerosol generation and entrainment apparatus, the facility also possesses an enlarged driver section and double-diaphragm interface between the driver and driven sections. The driver section diameter is 19.37 cm with a configurable length of 1 m-6 m. Additionally, the stainless-steel driven section has an inner surface with a mirror finish and internal diameter of 15.24 cm. The driven section is also configurable in length up to approximately 5.2 m. As with most modern shock tubes, this shock tube is equipped for use with current methods of shock velocity detection, optical diagnostics, and other diagnostic techniques. In addition to the study of aerosolized liquids (fuels and non-fuels) related to combustion chemistry, reaction kinetics, evaporation studies, and particle-fluid interactions, among others, the facility is capable of investigating traditional gas-phase mixtures like those previously undertaken in a similar facility in the Petersen Group Laboratory at Texas A&M University. The operating limits of the title facility include temperatures and pressures up to 4000 K and 100 atm, respectively. The design and characterization of a novel aerosol introduction method is also presented, which yielded measured aerosol loading uniformities of 92%-97%. Finally, ignition delay time measurements of stoichiometric mixtures of decane in air are presented, which show excellent agreement with those recently recorded in heated shock tubes.
德克萨斯 A&M 大学卡塔尔校区已开发出一种用于研究气相和凝聚相混合物的新型激波管设施，用于研究各种碳氢化合物。目前，该设施旨在研究长链碳氢化合物分子及其混合物在实际发动机条件下的燃烧行为。该设施配备了气溶胶生成和夹带装置，还拥有一个扩大的驱动段以及驱动段和被驱动段之间的双隔膜界面。驱动段直径为 19.37 厘米，可配置长度为 1 米至 6 米。此外，不锈钢被驱动段的内表面为镜面光洁度，内径为 15.24 厘米。被驱动段的长度也可配置，最长可达约 5.2 米。与大多数现代激波管一样，该激波管配备了当前的激波速度检测方法、光学诊断方法和其他诊断技术。除了研究与燃烧化学、反应动力学、蒸发研究以及颗粒 - 流体相互作用等相关的雾化液体（燃料和非燃料）外，该设施还能够研究传统的气相混合物，就像之前在德克萨斯 A&M 大学彼得森集团实验室的类似设施中进行的研究一样。该设施的运行极限分别包括高达 4000 K 的温度和 100 atm 的压力。还介绍了一种新型气溶胶引入方法的设计和特性，该方法测得的气溶胶负载均匀度为 92% - 97%。最后，给出了空气中癸烷化学计量混合物的点火延迟时间测量结果，其与最近在加热激波管中记录的结果显示出极好的一致性。
