Unsteady flow through a sharp-edged single-hole orifice placed in a pipe
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Abstract
Orifice plates or flow restrictions are key components used in industry for flow measurement and control. They find application in gas and liquid circuits of, e.g., lithography machines, nuclear power plants and aerospace propulsion systems [1]. They are used typically either for measuring flow-rate or to introduce a pressure drop for purposes of flow balancing. It is widely acknowledged in literature that the turbulent, unsteady nature of the flow through an orifice can be a source of structural vibration [
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