对于六角切圆燃烧锅炉 ,首次应用 PDA测量技术对燃烧器出口区域流场进行三维冷态试验研究 ,采用 k-ε双方程湍流模型的数值模拟 ,对试验进行验证、补充和修正 ,旨在研究炉内气流的旋转特性。数值模拟结果与试验研究结果吻合得较好。研究表明 ,六角炉内气流旋转较四角炉弱 ,炉膛角部出现二次漩涡。 For the hexagonal tangentially fired boiler, the three-dimensional cold test of the flow field in the burner exit area was first conducted by using the PDA measurement technology. The numerical simulation of k-ε turbulence model was used to verify, supplement and correct the experiment. Rotation characteristics of the airflow in the furnace. The numerical simulation results are in good agreement with the experimental results. The research shows that the airflow in the hexagonal furnace is weaker than the four-corner furnace and the secondary whirlpool appears in the corner of the furnace.