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Engineering
General Engineering
What is Causing the Audible Sound in This Fountain Video?
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[QUOTE="Randy Beikmann, post: 5742759, member: 549762"] Most likely it's an instability of the valve controlling the water flow. With the right (wrong?) design, flow through the valve can create a pressure drop that pulls the valve closed, at which point the pressure increases, and the valve opens again. And the process repeats, causing a vibration, which here produces audible sound. Hydraulic power steering systems can experience this (again, depending on the design) when steering at very low vehicle speeds. It is a self-exciting "steering shudder." [/QUOTE]
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What is Causing the Audible Sound in This Fountain Video?
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