【摘要】 测量了在不同偏航角α、俯仰角θ及风速下一维热膜探针偏航系数k和俯仰系数h的数值 ,研究了其变化规律 ,并利用一维热膜探针对空间气流的方向敏感性对径向浓淡旋流煤粉燃烧器模型出口的冷态旋流流场进行测量。确定了气流湍流脉动水平较高 ,有利于煤粉燃烧的区域更多还原

【Abstract】 Under different values of yaw angla α, pitch angle θ and air speed measured were the magnitudes of yaw coefficient ε and pitch coefficient h of a one dimensional hot film probe. Their variation relationship was also studied. Furthermore, by taking advantage of the directional sensitivity of the one dimensional hot film probe to spatial air flow, measurements were taken of the cold state rotating flow field at the outlet of a pulverized coal swirl burner model of radial dense dilute air flow. As a result, a zone with turbulent air flows of a relatively high pulsation level has been identified, which is favorable to pulverized coal combustion.更多还原