Abstract
An experimental study was performed for the flow in a modeled hydraulic headbox of paper making machines. Wakes from the partition plates in the dispartion part were investigated by using the flow visualization technique of a smoke wire method. The controls of the wake were explored for several kinds of test channels and the plates that differ in convergence and trailing edge shape, respectively. As a result, the rectification of the average velocity and the reducing the wake region by contracting the channel is effective for the plates with a trailing edge of a tapered and a wavy shape.
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