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我们在一低压卧式水力迴路上进行了正方形外壳(65×65毫米)的有限棒束流道(流态已达稳定时)的湍流流速分布试验.测量了s/d=1.63的有限棒束中心的中央单元流道的局部流速分布线.流道有正方形和正三角形排列的二种.试验结果与笛斯勒-泰勒方法的计算进行了比较.还测量了三种正方形排列的有限棒束流道s/d=1.28,1.33,1.63;S″=3.1,1.6,3.6毫米)各中央单元流道中心处的速度以及最边棒壁和盒壁间的速度.测量局部流速都采用了不锈钢注射针制成的外径等于0.5毫米(内径为0.25毫米)的毕托管.
We carried out a turbulent flow velocity distribution test on a low pressure horizontal hydraulic circuit with a finite length of 66 × 65 mm in a finite rod beam flow path (steady flow regime). Finite rod beams with a s / d of 1.63 The center of the central unit flow path of the local flow distribution of the flow channel has two kinds of square and regular triangle test results and the comparison of the calculation of the method of the Fischer-Taylor also measured the three kinds of square arrangement of the finite rod beam S / d = 1.28, 1.33, 1.63; S "= 3.1, 1.6, 3.6 mm) The velocity at the center of each central cell runner and the velocity between the most rod wall and the box wall were measured using a stainless steel injection Needle made of outer diameter equal to 0.5 mm (diameter 0.25 mm) Biot tube.