Governing Equations of Fluid Flow

• Governing equations

• • mathematical statements of the conservation laws of physics

• Conservation Laws of Physics

• • Conservation of mass
  • Conservation of momentum (Newton's 2nd law)
  • Conservation of energy (1st law of thermodynamics)

• Treat flow as a continuum

• • For length scales of 1m or larger, molecular structure of matter and molecular motions may be ignored.