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EXPERIMENTAL STUDY OF AERODYNAMIC BEHAVIOR DOWNSTREAM OF THREE FLOW CONDITIONERS

机译:三种流动调节剂下游空气动力学行为的实验研究

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The present work is concerned a comparative study of the decay of swirling turbulent pipe flow downstream of three flow conditioners, the Etoile, the Tube bundle, and the Laws perforate plate, and its effect on accuracy of orifice plate flow meter. The swirl was generated by a double 90° degrees elbows in perpendicular planes. The discharge coefficients were measured with 3 different orifice meters with β = 0.5, 0.62, 0.70 at different Reynolds number. As a conclusion, the experimental study of the three flow conditioners used separately shows that the flow need longer distance for close to fully developed pipe flow and some errors, by reason of the swirl, on the discharge coefficient were inevitable for distance less 12D.
机译:本作本作涉及三个流动调节剂,etoile,管束和定律穿孔板下游旋转湍流管流衰减的比较研究,以及对孔板流量计精度的影响。旋流由垂直平面中的双90°肘产生。用3个不同的孔表测量排出系数,其中β= 0.5,0.62,0.70,在不同的雷诺数。作为结论,单独使用的三种流量调节剂的实验研究表明,流量需要较长的距离以接近完全发育的管道流量,并且由于涡流的原因,在放电系数上不可避免地较少12d。

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