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对呼和浩特水电站地下主厂房1∶50和1∶20两种缩尺比例通风模型的试验结果进行了比较分析。利用粒子图像测速(PIV)技术对1∶50比例通风模型进行了整场试验研究,同时建立了比例尺为1∶20的热态通风模型。通过分析比较两种比例通风模型典型断面(厂房纵向中轴断面、横向中轴断面及过发电机中心的横断面)的流场特性,发现两种比例通风模型流场的试验结果最大误差约为12.1%,在整个研究区域内两种模型的试验结果基本趋于一致。
The results of two kinds of scaled scale ventilation models of 1:50 and 1:20 underground plants in Hohhot Hydropower Station are comparatively analyzed. The particle image velocimetry (PIV) technique was used to test the 1: 50 ratio ventilation model. At the same time, a 1: 20 scale thermal model was established. By analyzing and comparing the flow field characteristics of the typical cross sections of the two proportional ventilation models (the longitudinal axial section, the transverse axial section and the cross section of the generator center), it is found that the maximum error of the experimental results for the two proportional ventilation models is 12.1%. The test results of the two models tend to be consistent throughout the study area.