An agitator of diameter D requires a torque T to rotate at a constant speed N in a liquid of density
ho and
viscosity mu .
If an agitator of 223mm diameter rotating at 24re(v)/(s) in water requires a driving torque of 0.8Nm. Calculate
the corresponding speed (in rev/s) and the torque (in Nm ) required to drive a similar agitator of 693mm
diameter rotating in air (Viscosities: air 1.86 imes 10^(-5) Pa s, water 0.001 Pa s. Densities: air 1.20k(g)/(m^(3)), water 1000
{:k(g)/(m^(3))).
Answer using vector notation with either MATLAB or Python formatting (e.g. 0,0 or [[0,0]] ).
Question 9: Rotating Agitator
An agitator of diameter D requires a torque T to rotate at a constant speed N in a liquid of density p and
viscosity .
If an agitator of 223 mm diameter rotating at 24 rev/s in water requires a driving torque of 0.8 Nm. Calculate the corresponding speed (in rev/s) and the torque (in Nm) required to drive a similar agitator of 693 mm diameter rotating in air (Viscosities: air 1.86 x I0-5 Pa s, water 0.001 Pa s. Densities: air 1.20 kg/m3, water 1000 kg/m3).
Answer using vector notation with either MATLAB or Python formatting (e.g. [0,0] or [[0,0]]).
[Nm,Tm]=
matrix (rtol=0.02, atol=1e-08)
X0%