用化学示踪法测量了三角形排列元件组件内各类子通道间单相湍流交混的流率,得到了它们相应的关系式。实验包括:中央子通道四种壁距直径比P/d=1.20,1.33,1.38,1.505;壁区子通道四种壁距直径比δ_w/d=0.0556,0.098,0.172和0.256;子通道的雷诺数范围为(1～4)×10~4。实验结果表明:中央和壁区子通道间单相湍流交混流率是棒间距、子通道当量直径及雷诺素的函数,并随棒间距增加有明显增加。本文得到其关系式。实验结果和其他研究者的结果做了比较,发现比较符合。 The flow rate of single-phase turbulent mixing between various kinds of subchannels in the triangular array element assembly was measured by chemical tracing method, and their corresponding relations were obtained. The experiment includes: the ratio of the four wall-to-center diameter of the central subchannel P / d = 1.20,1.33,1.38,1.505; the wall diameter ratio of the four wall subchannels δ_w / d = 0.0556,0.098,0.172 and 0.256; The number range is (1 ~ 4) × 10 ~ 4. The experimental results show that the single-phase turbulent flow rate is a function of rod spacing, equivalent diameter of subchannels and the function of Reynolds, which increases with the increase of rod spacing. This article gets its relation. The experimental results are compared with the results of other researchers and found to be more consistent.