8. Conclusion

A description of the two-phase mixing patterns that develop in pumps, and more particularly in centrifugal pumps, helps to understand the relative importance of the various parameters and their respective influences.

In the presence of a two-phase mixture, a pump always operates at a lower level than in normal single-phase operation.

In two-phase operation, axial-flow pumps are less sensitive than centrifugal pumps.

Changes in mixing patterns in the wheel wells are directly linked to changes in pump performance and operating limits.

The higher the rotational speed of a given pump, the greater its ability to pump a two-phase mixture.

For a given rotation speed, the pump is all the more capable of operating in two-phase mode when flow rates are high.

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