On sound generated aerodynamically I. General theory

@article{Lighthill1952OnSG,
title={On sound generated aerodynamically I. General theory},
author={M. Lighthill},
journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences},
year={1952},
volume={211},
pages={564 - 587}
}

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences

A theory is initiated, based on the equations of motion of a gas, for the purpose of estimating the sound radiated from a fluid flow, with rigid boundaries, which as a result of instability contains regular fluctuations or turbulence. The sound field is that which would be produced by a static distribution of acoustic quadrupoles whose instantaneous strength per unit volume is ρvivj + pij - a20ρδij, where ρ is the density, vi the velocity vector, pij the compressive stress tensor, and a0 the… CONTINUE READING