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// A Textbook of Fluid Mecahnics and Hydraulic Machines - By R K Bansal
// Chapter 1-Properties of Fluid
// Problem 1.32
//Given Data Set in the Problem
visc=5/10
D=0.5
N=200
L=100/10^3
t=1*10^-3
//Calculations
//Using , tangential velocity=(pi*D*N)/60
u_tang=%pi*D*N/60
du=u_tang-0
dy=t
du_dy=du/dy
ss=visc*(du_dy) //Shear stress =viscosity*Velocity gradient
Area=%pi*D*L
F_shear=ss*Area
T=F_shear*D/2 //Torque=Shear force*D/2
Power_lost=T*(2*%pi*N/60) //Power lost =Torque*(2*pi*N/60)
mprintf("ThePower lost by the sleeve of 100m in oil is %f kW",Power_lost*10^-3)
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