Hydrodynamic Flow as Congruence of Geodesic Lines in Riemannian Space-Time
arXiv:gr-qc/0703083 · doi:10.1142/S0218271808012048
Abstract
It is shown that small elements of perfect fluid in adiabatic processes move along geodesic lines of a Riemannian space-time.
5 pages, Latex. Final version