Transcript Slide 1

Fluid Mechanics Overview
Fluid Mechanics
Gas
Liquids
Statics
F  0
i
Air, He, Ar,
N2, etc.
Compressibility Density
Water, Oils,
Alcohols,
etc.
Viscosity
Chapter 1: Introduction
Dynamics
 F  0 , Flows
Stability
Pressure Buoyancy
i
Compressible/
Incompressible
Surface
Laminar/
Tension
Turbulent
Steady/Unsteady
Vapor
Viscous/Inviscid
Pressure
Chapter 2: Fluid Statics
Pressure at a point in a fluid at rest.
Pressure variation from point to point in a fluid at rest.
Lines of constant Pressure
p = po
h1
p = p1
p = p2
For p2 = p = rgh + po
For p1 = p = rgh1 + po
U.S. Standard Atmosphere
Idealized Representation of the Mid-Latitude Atmosphere
Standard Atmosphere is used in the
design of aircraft, missiles and
spacecraft.
Stratosphere:
Isothermal, T = To
Troposphere:
Linear Variation, T = Ta - bz
Pressure variation with altitude in the
atmosphere.
Stratosphere
Troposphere
Near Equilibrium Motion of a Fluid
Motion of a fluid in a vessel with
constant horizontal acceleration


ˆ
 p  rgk  ra
Rotation of fluid about an axis at
constant angular velocity w.

1 p
p 
 p
  eˆr 
eˆ  eˆz   rgeˆz  ra  rw 2eˆr
r 
z 
 r