Application of Bernoulli's theorem||Viscosity ||FLUID MECHANICS |Part -06

Application of Bernoulli's theorem :

Venturi meter  : It is device which ,measure the discharge of pipe . 
It is based on the Bernoulli's  theorem  .

Orifice meter : It is measure the  discharge of liquid and based on the conservation of energy.

Pitote tube : It is measure the velocity of discharge of liquid and it is based on the conservation of liquid .

V = Square of (2gh)

Darcy's formula : Head loss due to friction head along length of pipe to average velocity of flow of fluid .

Head of friction = 4flv2/2gD

For laminar flow :   16/Re

Where f is the friction of factor ,L is length ,V velocity of pipe 
D is diameter  ,Re is Reynold number .

Reynold number :   It the ratio of inertia force to the viscous force   it has not dimensionless formula 

Re =pVD/ Dynamic 

For laminar flow =  Re <2000

Translational flow  :     2000<Re>4000 

Turbulent flow :  Re>4000

Kinematic viscosity :  It is ratio of dynamic viscosity /density of fluid 

Kinematic viscosity =  Dynamic viscosity /Density

unit : Meter2/sec  in SI system

Cm2/sec = 1 Stroke 
1 stroke = 10-4

Dynamic viscosity :

According to Newtonian law :

shear  force = Tau .dV/dY

unit ;  Newton-sec/meter2 in SI system
      : Dyne -sec/Meter2 = 1 Poise   in CGS system

    





















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