Two sets of exact isentropic-flow equations are developed, corresponding respectively to the Tait-Kirkwood equation (P + B) vkT = constant and to the Laplace-Poisson equation PvkL = constant. The exact real-fluid equations have the form of conventional perfect-gas equations, with additional correction terms which are usually small. Similarity principles for each set of equations are given, the Laplace-Poisson form being new. Various simplified forms of the exact equations, of the kind used in practice, are tested for accuracy in an example.

This content is only available via PDF.
You do not currently have access to this content.