Flow conditioning
Flow conditioning ensures that the "real world" environment closely resembles the "laboratory" environment for proper performance of inferential flowmeters like orifice, turbine, coriolis, ultrasonic etc. == Types of flow == Basically, Flow in pipes can be classified as follows – Fully developed flow (found in world-class flow laboratories) Pseudo-fully developed flow Non-swirling, non-symmetrical flow Moderate swirling, non-symmetrical flow High swirling, symmetrical flow == Types of flow conditioners == Flow conditioners shown in fig.(a) can be grouped into following three types – Those that eliminate swirl only (tube bundles) Those that eliminate swirl and non-symmetry, but do not produce pseudo fully developed flow Those that eliminate swirl and non-symmetry and produce pseudo fully developed flow (high-performance flow conditioners) Straightening devices such as honeycombs and vanes inserted upstream of the flow meter can reduce the length of straight pipe required.