The application of electronic digital computers to molecular orbital problems I. The calculation of bond lengths in aromatic hydrocarbons

Abstract
This paper extends in a number of ways the classical Helmholtz theory of incompressible flow about obstacles behind which are constant-pressure cavities or 'bubbles' of infinite extent. The theory given in the paper applies to compressible subsonic flow about given curved obstacles with bubble pressures varying down the wake. As an example the flow is calculated past a circular cylinder for a number of points of flow separation and Mach numbers. When the points of flow separation are the same as those found experimentally, the theoretical and experimental pressure distributions over the cylinder are in good agreement. It is shown that the point of flow separation for 'proper' cavitation is almost coincident with the point found experimentally for laminar boundary-layer separation.