Cooling air is directed to impinge against the bluff face of the centerbody and the spent impingement cooling air flows in a reverse direction towards the air swirler within the centerbody and is discharged through holes at the outer diameter of the centerbody, where it mixes with the fuel/air mixture prior to reaching the flame zone.
引导冷却空气(150)使其撞击中心体的非流线型表面(163)，用过的撞击冷却空气沿相反的方向朝中心体中的空气旋流器流动，并通过在中心体外径处的小孔(166)排出，在中心体的外径处该撞击空气在到达火焰区之前与燃料/空气混合物混合。
Several inclined cavities with a series value of length-to-depth ratio L/D(subscript u, aft wall angle, aft wall depth D(subscript d, and H2 jet location L(subscript jet were evaluated for mixing enhancement and combustion stability. It is noted that the hot recirculation zone full of radicals in cavity is the paramount mechanism for stable flame holding. Moreover, combustor with L/D=7~9, θ=30°, D/D=1.0, and L=24mm is recommended regarding combustion efficiency and total pressure recovery.
通过对比分析不同凹腔长深比L/D，后缘倾角θ，后缘深度D和H2，喷射位置L对燃烧室性能的影响，发现凹腔的火焰稳定机制主要在于富含自由基的高温回流区；L/D=7~9，θ=30°，D/D=1.0和L=24mm的燃烧室强化混合燃烧的性能较好，可以获得较高的燃烧效率和总压恢复。
Solid powder was adopted as unconditional seeding to study the flow characteristics of global field and atomized silicon oil droplets were used as conditional seeding to study the flow characteristics of reactants only. The measurement result of unconditional seeding, which does not distinguish the velocity of reactants or that of products, shows that in reacting zone, the measured velocity had a probability density function of two-peak distribution. The result tentatively demonstrates that in combusiton zone, the laser probe was alternatively subjected to low-speed reactants and high-speed products, due to flame flickering. The compounded measured velocities enlarges the span of velocity PDF and leads to a high turbulence. The measurement with conditional seeding, which limits the result to only those of reactants, shows no apparent difference between in flame zone and far upstream zone, in terms of mean velocity, turbulence and velocity PDF. The result affirmed the conclusion that the peak-turbulence in reacting zone is due to flame flikering.
采用雾化硅油只对反应物流场进行示踪，结果表明，脉动的、皱褶的预混火焰锋面对反应物流场性质并没有大的改变，在反应区内来流仍然保持原有的管流特征；采用耐高温固体粉末对全流场进行示踪，结果表明在火焰区内速度的概率密度分布为双峰分布，其中速度较低的峰的中心速度与硅油示踪得到的平均速度一致；火焰区湍流度的增大主要是由于测量探头交替地处于高速的产物和低速的反应物之间，导致速度测值分散所致，得到的仅仅是统计意义上的结果，为表观湍流度。
As one of the major function areas in Zhapu Economic Development Zone, China New Chemical Materials Park focuses on such new chemical materials as engineering plastics, organic silicon, new-type flame retardant, polyurethane and water treatment agent.
据了解，中国化工新材料园区是乍浦经济开发区内主要功能区块之一，园区重点发展以工程塑料、有机硅、新型阻燃剂、聚氨酯、水处理剂等为主导的化工新材料产业。
Meanwhile, the combustion tuning could not improve the unburned carbon in slag very much either. It was found in the cold-state in-laboratory experiments that the flame-stabling ring used in current burner lead to form a low velocity zone near the out wall of the primary air duct, which was the mean reason of the powder accumulation within the burner.
冷态试验台试验研究结果表明，现有燃烧器的稳焰环造成在一次风出口的一次风管外壁附近形成相当宽的低速区，是导致积粉的主要原因；而采用稳焰齿可使一次风管出口速度分布均匀，减小外壁附近的低速区，增加外壁附近湍流扰动，既有利于减轻积粉，又可保持燃烧器在燃烧方面的优势。
To control the potassium concentration in flue gas, water-washed sawdust was used, and the aqueous solution of potassium acetate was sprayed into the flame zone in order to study the effect of potassium.
通过水洗处理和喷加雾化溶液的方式控制烟气中钾的含量，采用自动控温采样枪收集积灰样品。
Through the surveys of sample zone in the edges, being susceptible to cause forest fire, of the plantations of Larix principis-rupprechtii, the paper studied the distribution laws of the herb fuels, analyzed the edge directions and the pruning heights affect the herb fuels, and discussed the relations between dead herb loading and flame height in the edges.
该文通过对华北落叶松人工林易引发森林火灾的林缘地带进行的样带调查，研究林缘下草本可燃物的分布规律，分析不同方向林缘、不同修枝高度对林缘下枯草可燃物的影响，同时探讨枯草负荷量和火焰高度之间的关系。
Changing the ratio of the waist side air, size and temperature arrangement of recirculation zone can be changed, and the location and shape of flame is adjustable.
本文通过数值模拟和冷态试验分别研究了各股射流对燃烧器回流区的影响。
Compared with arc welding, gas welding flame temperature is low, heat dispersion, heat slowly, so productivity is low, the workpiece deformation of serious, large welding heat affected zone of welded joint quality.
它与电弧焊相比，气焊火焰的温度低，热量分散，加热速度缓慢，故生产率低，工件变形严重，焊接的热影响区大，焊接接头质量不高。
The flame noise from impinging flame zone is proved through analysis on spectrums of flame noise and pressure fluctuations.
通过分析火焰噪声频谱及压力波动，证实撞击区火焰噪声的存在。
The method which describe flame structure as four parts: unburnt zone, preheat zone, reaction zone, product zone is proposed, and use OH half width to define the boundary and thickness of the reaction zone.
提出将火焰结构划分为未燃区、预热区、反应区、产物区的方法进行研究，利用OH半峰宽度定义反应区边界及厚度。
Dilution-zone characteristics of an aero-engine combustor flame tube
航空发动机燃烧室火焰筒掺混区特性的研究
The high temperature zone is at inner side of OH zone for the diffusion flame, but both zones are approximately at the same position for the premixed flame.
对于扩散火焰，高温区在OH带内侧；而对于预混火焰，二者基本一致。
The role of side recirculation zone is to make some of high-temperature flame product back to the roots, so that the flame can be stabilized. Another role of side recirculation zone is to heat the gas that will shorten the flame length.
侧回流区的作用是使一部分高温产物回流至火焰根部，稳定火焰，同时对预混可燃气具有加热作用，使火焰长度缩短。
For the three-zone model, a set of coupled correlations has been derived to describe the effect of pressure and temperature on the laminar burning velocity and the laminar flame thickness.
关于三区模子，加上相关的衍生了一套描绘的压力和温度的层流熄灭速度和火焰层厚度的影响。
After long-term observation study found that, from inside the burning zone of rotary kiln flame image collected contained a lot of information on the temperature of burning zone.
经过长期观察研究发现，从回转窑烧成带内采集到的火焰图像中包含了大量烧成带的温度信息，可以用来判别回转窑的燃烧状况。
Compared with the original combustor burning diesel oil, the metal temperatures of the combustion liners in the primary zone of the two retrofitting schemes burning syngas increase, their NOx emissions decrease distinctly, and their flame stability is improved evidently.
此外，与原型燃烧室燃烧轻柴油的工况相比，2个改造方案在燃烧合成气时燃烧室主燃区的火焰筒壁面温度升高，而燃烧室的NOx排放大大降低，火焰的稳定性得到明显改善。
Measuring the Temperature of Calcining Zone in Rotary Kiln by Flame Image Sequence Processing
基于图像序列处理的回转窑煅烧区温度测量
LES can capture three zones of forced flames - continuous flame, intermittent flame and plume zone, and portray the large fluctuations of temperature and the detail pulse of the smoke flow at the top of the fire source.
LES能捕捉到受迫火焰的三个分区&连续火焰区、间歇火焰区和浮力羽流区，刻画出火源上方温度的大幅波动和烟气的脉动细节。
In parallel with this experimental analysis, an interpretative mechanism for AP's effects is developed on the basis of condensed phase mechanism, dark zone theory and flame property in the combustion wave.
依据推进剂燃烧波结构中的凝相机理、暗区理论和火焰性质，全面考察了AP的影响机制；