Performance degradation coefficients
Two-phase flows in pumps Descriptions and consequences

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Performance degradation coefficients


Two-phase flows in pumps Descriptions and consequences

Author : Gérard BOIS

Publication date: March 10, 2021, Review date: June 23, 2022 | Lire en français

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7. Performance degradation coefficients

Various expressions are used to represent the degradation of pump performance in the presence of two-phase flows. Performance is generally expressed in relation to the single-phase performance assumed to be known.

In this section, results are obtained using water and air as constituents of the two-phase mixture.

7.1 Definitions

Visit pressure (or height) decay rate, denoted ψdp corresponds to the ratio between the two-phase height coefficients...

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