Velocity and Turbulence Measurements in the Flow Downstream of Flow Conditioners
Hot-wire anemometry is used for measuring the flow field downstream of 3 different types of flow conditioners that are exposed to pipe flow disturbed by a 90° out-of-plane double bend. This disturbance causes asymmetry of the velocity profile and swirl.
While the swirl is found to be removed completely, the measured profiles of axial mean velocity and its turbulent fluctuactions re-develop in axial direction according to different laws. The conditioners show different efficiencies in re-developing the flow. It is apparent that the most important processes determining the efficiency of the conditioner take place in its near field which ends at a distance of about 3 or 4 pipe diameters downstream.
KeywordsParticle Image Velocimetry Pipe Flow Perforated Plate Tube Bundle Straight Pipe
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