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Noise and Vibrations

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Abstract

As explained in Chap. 5, the flow at the impeller outlet is non-uniform. The diffuser vanes or volute cutwaters are thus approached by an unsteady flow. The flow at the stator vanes acts back on the velocity field in the impeller. The related phenomena are called “rotor/stator interaction” (RSI). As a consequence of the RSI, hydraulic excitation forces are generated. These give rise to pressure pulsations, mechanical vibrations and alternating stresses in various pump components. The vibrations transmitted to the foundations spread as solid-borne noise throughout the building. The pressure pulsations excite the pump casing to vibrations. They also travel as fluid-borne noise through the piping system, where they generate vibrations of the pipe walls. The vibrating walls and structures radiate air-borne noise.

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(2008). Noise and Vibrations. In: Centrifugal Pumps. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73695-0_10

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  • DOI: https://doi.org/10.1007/978-3-540-73695-0_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-73694-3

  • Online ISBN: 978-3-540-73695-0

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