Gas and pump performance

Compare predicted pump pressure rise with published gas–liquid measurements across six steady operating duties.

How does gas affect pump pressure?

Monochrome cutaway of a multistage pump with impellers along a central shaft and gas bubbles in the fluid passages
Mechanism illustration: a multistage pump cutaway showing impellers and gas in the liquid passages. Conceptual sketch; not the measured K-70 pump geometry.

What you can model

The pump schematic locates the component whose pressure rise is being evaluated. A correlation-based model represents gas-related performance changes at six steady K-70 pump duties. Each duty provides a corresponding measured value, allowing the predicted pressure rise and the measurement to be compared at the same operating point.

Pump component schematic.
Pump component schematic.

What you can explore

Read the measured and predicted pressure values together, then use the residuals to locate the larger differences. This comparison connects the pressure-rise trend to the model error at each duty. It supports a focused assessment of these steady points when exploring gas–liquid pump performance.

Published measured pressure rise, model predictions and residuals for six pump duties.
Published measured pressure rise, model predictions and residuals for six pump duties.

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