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Flow conditioners efficiency a comparison based on numerical approach

机译:流量调节器效率的基于数值方法的比较

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摘要

Generally, flow conditioner efficiency is experimentally evaluated on the basis of the effects that these devices produce on a particular type of flowmeter. This approach, beside being very expensive, has certainly obstructed the development of a general theory and consequently the optimal design of flow conditioners. The present paper presents a comparison of the performance of different flow conditioners, independently from their effects on particular flowmeters. Therefore, the authors propose the use of several efficiency parameters to evaluate and compare flatness, uni-directionality and axi-symmetry of the velocity profiles produced downstream from the conditioners. In order to compare the main conditioners, a brief description of their characteristics is reported. Then, the numerical analysis is carried out using the finite volume technique. From the results obtained it was possible to calculate the efficiency of the conditioners under low-level disturbance conditions, such as those produced by an out of plane double elbow configuration.
机译:通常,根据这些设备在特定类型的流量计上产生的效果,通过实验评估流量调节器的效率。除了非常昂贵之外,这种方法当然也阻碍了一般理论的发展,因此也阻碍了流量调节器的最佳设计。本文对不同流量调节器的性能进行了比较,独立于它们对特定流量计的影响。因此,作者建议使用几个效率参数来评估和比较在调节器下游产生的速度曲线的平坦度,单向性和轴对称性。为了比较主要的护发素,报告了其特性的简短描述。然后,使用有限体积技术进行数值分析。根据获得的结果,可以计算出在低水平扰动条件下(例如由平面外双肘形配置产生的调节器)的调节器的效率。

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