Equations
- Linear wave equations
- Linear Euler equations
- Kirchhoff’s integral formula
- Lighthill’s equation
- Ffowcs-Williams & Hawkings (FWH) solution from Lighthill’s equation
- Cule’s solution from FWH
- Fairfield and compactness assumption
Divergence theorem
convert the surface integral to a volume integral
The integral of the divergence of a vector over a volume is related to the component of the vector normal to the surface enclosing the volume by
