作　　者： ; ;

机构地区： 浙江大学机械与能源工程学院热能工程研究所

出　　处： 《浙江大学学报（自然科学版）》 1999年第6期612-616,共5页

摘　　要： 采用五孔球形探针测量了４００ ｍ ｍ ×４００ ｍ ｍ 下排气方形分离器实验模型内的气流流场，将测量结果与前人的圆形旋分离器和上排气方形分离器结果进行了对比和分析．结果表明流场呈不对称分布，切向速度外部呈自由涡流动，中心筒外侧没有出现明显的刚性涡区；纵向速度比切向速度小得多；轴向速度在导流锥部分外侧向上，内侧向下，在排气管周围区域为内侧向上，外侧向下． 在角区内，存在角涡流动，相关实验表明，角区流动对分离器的分离效率和阻力性能影响很大． dimensional flow fields in uniflow squared separator are investigated in detail on a 400 mm×400 mm test model with 5\|hole ballprobe. Results are analyzed and compared with the flow fields in cyclone separator and upward exhaust squared separator. Measurements show the fields are asymmetical. The tangential velocity of the outer field around the exit duct can be discribed as free vortex, distinct solid body rotation (or force vortex) is not detected. The radial velocity is lower than the tangential. The axial velocity in the area around exit duct is upward at the center and downward at the outer. The axial velocity's direction around the induce cone is inverse to that around the exit duct. The fields at the corners area have great effects on the separator's performance.

关 键 词： 气固分离 分离器 流场 测定 试验 分离效率

领　　域： [化学工程]