提出了一种介于混合通风、置换通风之间的新型通风模式——条缝型送风口形成的竖壁贴附射流。利用2DPIV研究了该模式下射流送风速度对气流流场的影响,并对极限贴附距离进行了探讨。研究表明,射流送风速度越大,形成的贴附射流距离越长,贴附效果越显著;同时,送风速度越大,射流对周围空气的卷吸能力越强,射流影响区域越大;射流送风速度的改变对极限贴附距离的影响不明显。 A new type of ventilation mode, which is a mixed ventilation and displacement ventilation, is proposed. Using 2DPIV, the effect of jet velocity on airflow field was studied and the limit attachment distance was discussed. The results show that the greater the velocity of air jet, the longer the attached jet distance is, the more obvious the effect is. At the same time, the larger the air velocity, the stronger the entrainment ability of air jet to the surrounding air, The influence of the change of jet air velocity on the limit attachment distance is not obvious.