本文采用了一低速涡轮叶栅在下游若干平面上测量了二次流的总压损失。经研究分析,得出了一套损失的经验公式,并与国外已发表的二次流损失关系式作了比较,对其中存在的疑点提出了看法。试验中采用一小型Kiel快速响应的压力探针,在微机控制下,迅速得到各个截面的总压损失系数平均值,大大提高了测量的速度和精确度。 In this paper, a low-speed turbine cascade was used to measure the total pressure loss of the secondary flow on several downstream planes. After the research and analysis, a set of empirical formula of loss is obtained and compared with the published published secondary flow loss relation, and the doubts exist. The test uses a small Kiel rapid response pressure probe, under the computer control, the average total pressure loss coefficient of each cross-sectional average, greatly improving the measurement speed and accuracy.