Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle

<table> Head characteristic without casing treatment of model-pump (DN 150) installed vertically in intake chamber and horizontal tubular casing test-pump (DN 350) used by Goltz.</table>

International Journal of Rotating Machinery

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Figure 5

Figure 5: Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle 