Chapter Five : Hydrodynamics

موضوع: Chapter Five : Hydrodynamics السبت يناير 12, 2008 1:50 am

Definition and Basic Concepts:

1- Fluid:
Is a substance that can flow and doesn't has definite form.
2- Steady flow in a tube require:
a- The liquid fill the tube completely.
b- The quantity of liquid entering from one end of the tube equals that goes out from the other end in the same time.
- Equation of continuity:
Chapter Five : Hydrodynamics PHE122280

- For "N" similar branches:
A₁v₁ = N A₂v₂
The mass rate of flow is (Q_m)
The volume rate is Q_v = AV m³/s

3- Viscosity : Is the property which is responsible for resisting the liquid layers sliding above each other.
* The coefficient of viscosity: h_vs
- It is the tangential force acting on unit area to produce a unit change in velocity between two layers 1 m apart.
- It is given by: Chapter Five : Hydrodynamics BR-PHE12-0040

Chapter Five : Hydrodynamics BR-PHE12-0040

- It is measured in: kg m^-1 S -1