It is desire to flash-mix some chemicals with incoming wastewater that is to be treated. Mixing is to be accomplished using a flat-paddle mixer 500 mm in diameter having six blades. Is the temperature of the coming water is 10 μC and the mixing chamber power number is 1.70, determine:
(a) the speed of rotation when the Reynolds number is approximately 100,00
(b) what it is desirable to have a high Reynolds number in most mixing operations?
(c) The require mixer motor size, assuming an efficiency factor of 20 percent.