Abstract
This paper explicates a study of a pressurized flow when a closed tank is suddenly opened and the flow passes through an orifice until the tank is at equilibrium with the surroundings. The research analyzes the evolution of this adiabatic flow over time considering its three most important regimes: a choked condition, an unchoked condition, and an incompressible condition. In order to fully characterize the flow, the study analyzes the pressure, the temperature, the density, and the mass flow rate during the discharge of the vessel. All of these properties are studied using their own equations in their dimensionless form and later plotted using the math software program MATLAB. Given some inputs such as the initial and final dimensionless pressures and the specific heat ratio, it is possible to determine the dimensionless time until the tank is drained and the evolutions of the properties.