232 ENVIRONMENTAL ENGINEERING
10.7 Tivo geometrically similar centrifuges have the following machine
characteristics:
Machine 1 Machine 2Bowl diameter, cm 25 35
Pool depth (r2 - q), cm 3 4
Bowl length, cm 30 80If the flow rates are 0.6 and 4.0 m3/h and the first machine operates at 1000 rpm, at
what speed should machine 2 be operated to achieve similar performance, if only the
liquid loading is important?