A Two-Phase Mass Flow Rate Model for Nitrous Oxide Based on Void Fraction

In the field of space propulsion, self pressurized technology is an example innovation capable improving system performances through reduction volumes and other optimizations. Potential applications are widespread not limited to propulsion panorama: from on-orbit maneuvering in-orbit servicing, refueling satellites at end life in situ resource exploitation for missions headed towards remote objects solar system. However, important drawbacks have been reported these systems: modeling fluids thermal phenomena complex, thus preventing accurate performance predictions. As a result, no comprehensive model describing dynamics self-pressurizing propellant tank has developed so far. this context, paper proposes two-phase mass flow rate based on void fraction. N2O selected due its use as green self-pressurized in-space propulsive applications. The aim describe current models present literature fluid compare new with one proposed by Dyer. A validation also offered, test campaign mentioned. Finally, preliminary results shown discussed: then compared ones obtained Dyer model, order retrieve comparison among two simulation frameworks. Comments added, showing improvements well limitations framework.