The demand to reduce the amount of waste water is having 
considerable impact on design of waste water pumps as the 
solid content is increased in proportion to amount of 
water present. At the same time these pumps are required 
to have high efficiency. So the design of waste water 
pumps need to meet the contrasting requirements in terms 
of non-clogging performance, efficiency and sometime even 
cavitation performance.

In this webinar we present a new methodology for design of 
non-clogging pumps based on coupling 3D inverse design 
method with an automatic optimizer. The proposed 
methodology uses the computational speed of 3D inverse 
design method and the resulting geometrical and flow 
parameters to create a system for rapid and automatic 
exploration of the design space so that the contrasting 
requirements in terms of non-clogging, efficiency and 
cavitation performance can be met within 1 hour time scale 
computationally on a single core.

The process is demonstrated for an actual case with a 
requirement for 3 inch non-clogging performance. The key 
geometrical parameters used to ensure non-clogging 
performance of the design are explained. The performance 
of the resulting impeller is then assessed for efficiency 
and cavitation performance.