A high pressure shock/detonation tube facility for the study of combustion characteristics and detonation properties of future alternative fuels

康科迪亚大学机械和工业工程系燃烧实验室要求由NSERC研究工具和仪器补助金(RTI)资助的设备安装高压冲击/爆轰管设施。这一主要设施包括一个耐高压激波/爆轰管装置、一个真空/气体歧管系统和一个专门设计的高压流量计量/混合系统。所要求的部件还包括一套多功能诊断设备，其中包括一台高分辨率光谱仪、高压压电式换能器和一台高速摄像机。这些仪器将允许广泛的基本诊断和测量，如摄影研究、发射光谱和记录瞬时压力演变。据介绍，所要求的设备将用于支持未来替代能源燃料(如氢、合成气、二甲醚和其他生物燃料)在与储存、发动机和涡轮机应用相关的高压条件下的燃烧特性和安全方面的实验研究。具体地说，这项研究是通过测量点火延迟期、爆炸特性(如爆轰单元尺寸、临界管径和失效直径)、用于验证化学动力学模型的主要稳定气体物种、燃料在高压下的热加热热解以及通过高速摄影显示不同的非稳态流体动力学来检验不同的替代燃料特性。这些实验结果不仅将为评估未来使用替代燃料的潜在危险和改进内燃机设计或新的微推进概念提供关键数据，而且还将提供关于非定常火焰和爆炸动力学、高压/高温化学和化学反应流动中湍流相互作用的基础知识。这些设备将创造机会，与加拿大和汽车/航空航天行业的不同学术单位合作。拟议的计划属于由NSERC最近的重新分配工作支持的替代能源系统研究。

The Combustion Laboratory of the Department of Mechanical and Industrial Engineering at Concordia University requests equipments funded under the NSERC Research Tools and Instruments Grants (RTI) to install a high-pressure shock/detonation tube facility. This major facility includes a high-pressure resistant shock/detonation tube apparatus, a vacuum/gas manifold system and a specially designed high-pressure flow metering/mixing system. The requested components also comprise a multi-purpose diagnostic equipment set that includes a high resolution spectrometer, high-pressure piezoelectric transducers and a high-speed video camera. These instruments will allow for a wide range of basic diagnostics and measurements such as photographic study, emission spectroscopy, and record of transient pressure evolutions.      The requested equipments will be used to support experimental research on the combustion characteristics and safety aspects of future alternative energy fuels (such as hydrogen, syngas, dimethyl ether and other biofuels) at high-pressure conditions relevant to storage, engine and turbine applications. Specifically, the research is to examine different alternative fuel properties by measuring the ignition delay, explosion properties such as detonation cell size, critical tube and failure diameters, major stable gas species for validating chemical kinetics models, fuel pyrolysis under thermal heating at high pressure and by visualizing different unsteady fluid dynamics using high-speed photography. These experimental results will not only provide key data to assess potential hazards of future use of alternative fuels and to improve internal combustion engine designs or novel micro-propulsion concepts, but also provide fundamental knowledge on unsteady flame and explosion dynamics, high pressure/high temperature chemistry and turbulence interactions in chemically reactive flow. The equipments will create opportunities to collaborate with different academic units at Canada and automobile/aerospace industries. The proposed program belongs to the alternative energy system research supported by recent NSERC reallocations exercises.