Thermodynamic data at extremely high flow velocities pertaining to catalytically stabilized combustion systems with highly conductive materials

The thermodynamic data at extremely high flow velocities are obtained for catalytically stabilized combustion systems with highly conductive materials. The catalyst in the catalytically stabilized combustion system generally operates at a temperature approximating the theoretical adiabatic flame temperature of the fuel-air admixture charged to the combustion zone. The entire catalyst may not be at these temperatures, but preferably a major portion, or essentially all, of the catalyst surface is at such operating temperatures. The temperature of the catalyst zone is controlled by controlling the composition and initial temperature of the fuel-air admixture as well as the uniformity of the mixture. The residence time is governed largely by temperature, pressure and space throughput, and generally is measured in milliseconds. The volume of catalyst is taken as the total superficial volume encompassing the active catalyst and any less active support, including any voids or gas passages through the catalyst. The catalytically stabilized combustion system comprises a concentric annular channel, wherein the concentric annular channel further comprises an inner annular channel and an outer annular channel. The concentrically arranged annular channel is 5.0 millimeters in inner channel length, 5.6 millimeters in outer channel length, 0.8 millimeters in innermost diameter, 2.6 millimeters in outermost diameter, 0.1 millimeters in catalyst layer thickness, and 0.2 millimeters in wall thickness. The spacing between the inner channel and the outer channel is 0.4 millimeters and remains constant. The continuous flow reactor can have any dimension unless restricted by design requirements. All the walls have the same thickness. One of the potential problems associated with the continuous flow reactor continues to be combustion stability. The maximum Reynolds number is less than 360 at the flow inlet and 960 when the velocity of the flow of the fluid is highest in the channels. The model is implemented in commercially available software FLUENT to obtain the solution of the problem. Detailed chemistry is included in the model. Detailed chemical mechanisms are playing an increasingly important role in developing chemical kinetics models for combustion. Detailed chemical mechanisms are incorporated into the reacting flow for the continuous flow reactor. The homogeneous combustion is modeled with the detailed chemical mechanism for methane oxidation in CHEMKIN format. Detailed heterogeneous chemistry in SURFACE-CHEMKIN format is included in the model. Contributor: Junjie Chen, E-mail address: [e-mail], ORCID: 0000-0002-5022-6863, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China

针对采用高导热材料的催化稳定燃烧系统，获取了极高速流动条件下的热力学数据。
该催化稳定燃烧系统中的催化剂，其工作温度通常与通入燃烧区的燃料-空气混合物的理论绝热火焰温度相近。
并非整个催化剂都处于该温度区间，但在优选工况下，催化剂表面的大部分区域，或几乎全部区域，均处于此类工作温度。
催化剂区域的温度可通过调控燃料-空气混合物的组分、初始温度以及混合物的均匀性来实现控制。
停留时间主要由温度、压力和空间通量支配，通常以毫秒为单位计量。
催化剂体积定义为包含活性催化剂、任意低活性载体在内的总表观体积，其中涵盖催化剂内部的空隙或气体通道。
本催化稳定燃烧系统包含同心环形通道，该同心环形通道进一步分为内环形通道与外环形通道。
该同心布置的环形通道参数如下：内通道长度5.0毫米，外通道长度5.6毫米，最内侧直径0.8毫米，最外侧直径2.6毫米，催化剂层厚度0.1毫米，壁厚0.2毫米。
内外通道的间距为0.4毫米且保持恒定。
该连续流反应器的尺寸可灵活调整，除非受设计要求限制。
所有壁面的厚度均保持一致。
连续流反应器相关的潜在问题之一仍是燃烧稳定性。
流动入口处的最大雷诺数小于360；当通道内流体流速达到峰值时，最大雷诺数为960。
本模型采用商用软件FLUENT搭建，以求解该问题。
模型中包含详细化学反应机理。
详细化学机理在燃烧化学动力学模型的开发中发挥着愈发重要的作用。
本连续流反应器的反应流场中引入了详细化学机理。
均相燃烧采用CHEMKIN格式的甲烷氧化详细化学机理进行建模。
模型中还包含SURFACE-CHEMKIN格式的非均相详细化学反应机理。
贡献者：陈俊杰，电子邮箱：[e-mail]，ORCID：0000-0002-5022-6863，河南理工大学机械与动力工程学院能源与动力工程系，河南省焦作市世纪大道2000号，454000，中华人民共和国。