TURNING THE PULSATING FLOW INTO LAMINAR FLOW, REDUCTION / ELIMINATION OF EFFECT OF VACUUM, NEW CONSTRUCTIVE SOLUTIONS

摘要

The article, as a new concept, analyzes the notion of ? pulsating flow ?, the physical phenomenonseen when emptying bottles of PET or Tetra Pak; which do not have a disposal system of the vacuumcreated while emptying them, situation in which the fluid stream becomes oscillating in terms of the speedand the flow of the fluid passing through the drain area / section. Pulsating flow is a result of the vacuumcreated in the container, as opposed to laminar and turbulent flow whose existence is determined by therelative speed of the layers of fluid and the friction forces [2]. In the paper I present some new constructivesolutions, designed by AutoCAD and created physically with rapid-prototyping.