The assumption of unity Lewis number in the flamelet model of turbulent combustion is examined and the influence of differential diffusion and radiation on the flamelet structure, nitric oxide emission and extinction limit is investigated.
对拉伸层流扩散火焰面进行了数值模拟,考察了在以往湍流燃烧的火焰面模型中,假定Lewis数等于1的可靠性,研究了不同分子扩散和火焰辐射对火焰面结构、氮氧化物排放和熄火临界的影响。
In a pilot scale reverse flow reactor with a liter of catalyst, catalytic combustion of typical industrial waste gas contaminated with volatile aromatic compounds (VOC) was systematically investigated, and the "temperature run-away"in the case of too high feed concentration and the "extinction of reactor" in the case of low feed concentration were observed.
在流向变换催化燃烧小型中试装置上利用国产催化剂进行了含混合芳烃模拟工业废气的净化试验 ,重点考察了挥发性有机物 (VOCs)能够通过调整换向周期在既不“飞温”也不“熄火”的条件下保持很高的VOCs转化率的浓度变化范围 ,初步观察了由于VOCs浓度过高或过低所引起的“飞温”或“熄火”过
Using the digital image processing technique and the laser tomography technique, a novel approach based on the turbulent intermittence was proposed here to describe the extinction process of turbulent flame.
对模型与试验中获得的临界熄火现象进行了对比 ,结果令人满意 。
The quenched samples of GAP/AN propellant after combustion extinguishment were obtained by a new quenching method.
采用一种新的方法得到中止燃烧以后的熄火样品 ,利用扫描电子显微镜和能谱分析研究了 GAP/AN推进剂熄火表面的结构和形貌。
Only in this year,extinguishment has occurred several times,especially for a DG 670/140-8 boiler, DCS data recorded showed some phenomena not encountered before when it extinguished.
镇海发电厂一台DG 670/140-8锅炉在2005年7月12日发生的一次熄火事故,指出原因在于煤种与炉型的严重不匹配,造成2号角上一次风管内发生爆燃,并产生一次风管堵管的假象。
Simple harmonic analysis is carried out for the excitation torque when a single-cylinder misfired.
利用系统矩阵法求解了发动机曲轴扭振系统的强迫振动特性,并对发动机单缸熄火时扭振系统的激励力矩进行了简谐分析。
The method with rotation velocity of single cylinder misfire is presented in this paper to measure diesel engine cylinders work evenness.
提出了简单实用的单缸熄火转速法 ,用以测量柴油机各缸工作均匀性 ,并进行了实验研究。
Problems and solutions for frequent flameout of HG-1025/18.2-YM6 boiler;
HG-1025/18.2-YM6型锅炉频繁熄火问题分析
This paper is to solve the flameout problem of a boiler.
针对某厂11号炉接连发生多次正压熄火现象,在锅炉冷态通风条件下,将燃烧器的一次风、内外二次风和增压风分别调匀,通过测试燃烧器回流区,确定内二次风挡板开度的合适范围。
Presents a torsional vibration model during the flameout of a cylinder with the system matrix method.
利用系统矩阵法建立了车辆动力传动系在发动机一缸熄火时的扭振数学模型。