方案摘要
方案下载应用领域 | 能源/新能源 |
检测样本 | 煤炭 |
检测项目 | |
参考标准 | 暂无 |
采用LaVision公司的粒子成像测速系统(PIV)和粒子跟踪测速系统(PTV)对无反应条件下氧煤燃烧室中颗粒流动的速度场进行了实验测量研究。
Investigating the two-phase flow in close-to-realistic geometries is essential to gain a more detailed understanding of coal combustion. Particularly the slip velocity between solid fuel particles and the surrounding gas phase has a significant effect on local heat transfer and gas composition. Experimental investigations that focus on two-phase flows in combustion chambers are sparse. In this work the two-phase flow in a combustion chamber optimized for oxy-coal operation is investigated for non-reacting conditions. The aim is to advance the
measurement technique and to reveal the differences of particle and gas velocities needed to estimate the instantaneous slip velocity of the particles. The investigation covers the most important regions for flame stabilization where volatiles are released: inside the quarl and directly downstream of the quarl close to the dump plane. The quarl and large parts of the combustion chamber are made of quartz glass, enabling particle image velocimetry (PIV) and particle tracking velocimetry (PTV). Two-phase PIV/PTV measurements were performed
using tracer particles (0.5 μm) to track the gas flow and solid particles (40–80 μm) representing grinded coal. Using double-exposure Mie imaging, gas phase tracers and particles were simultaneously recorded and separated during post-processing. As the gas and the particle velocity fields are measured simultaneously, the slip velocity
is accessible. Measurement errors are estimated and discussed in detail. Differences of gas and particle velocity fields are shown and particle trajectories are analyzed. Operation conditions covered flows for three different particle loadings with relevance for oxy-coal and air-coal combustion.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
相关产品
汽车光学检测系统AIS
PT403型波长可调谐皮秒激光器
ANL系列高能量高重复频率DPSS纳秒激光器
APL4206 系列高能量皮秒激光放大器
UltraFlux FF/FT 5000 高能量可调谐飞秒激光器系统
UltraFlux FT300型波长可调谐飞秒激光器系统
Ekspla 超高功率激光器系统SYLOS 2A
LaVision PTUx 可编程时间控制单元
LaVision 用于粒子成像测速PIV的相机
LaVision StrainMaser 全场应变测试系统组件
LaVision 用于数字图像相关DIC的相机
LaVision StrainMaster 数字图像相关分析软件包
LaVision 标定板
LaVision StrainMaster 形变应变成像测量系统
LaVision StrainMaster DVC 体视全场应变测量系统
关注
拨打电话
留言咨询