Computational fluid dynamics (CFD) are an effective tool to optimise pump components and improve overall efficiency within the scope of new developments, overhauls or retrofits. This example shows how the return guide vanes of a multistage ring-section high-pressure pump were redesigned.
Retrofit
A nuclear power plant's output was to be increased. This necessitated installation of a new impeller. Using computational fluid dynamics (CFD), the new impeller was matched to the changed operating conditions and pump performance (developed head and efficiency) was improved. The available inlet pressure is sufficient to ensure reliable, non-cavitating operation of the high-speed pump.
