692 / 2019-04-30 17:15:12

A Two-Phase Eulerian CFD Model for Predicting Gas-liquid Reactive Jet

Two phase flow; Eulerian model; Reactive jet; Jet reactor

全体主题 > 数值模拟、建模与CFD

Jet reactors involving gas-liquid reactive jet are widely used in various industrial applications such as chemical engineering and thermal energy propulsion system, etc. Due to the hostile environment where gaseous jet and liquid metal flow and react with each other, it is challenging to investigate the reactive jet experimentally. In present work, an integrated two-phase Eulerian CFD model, including species transport model, reaction model, phase change model and drag model, is build up to simulate this phenomena, and the gaseous SF6 jet injecting into molten metal Lithium (Li) bath system is taken as an example to exam this model. Besides, grid independency is validated and key parameters within the phase-change model are investigated. Compared with experimental data, the integrated model is validated, which proved that the two-phase Eulerian model in present work could be extended for predicting the performance of other reactive jet systems. The result indicated that, the evaporated metal vapor due to highly exothermic penetrates much longer than the gaseous jet injected, and hence the reactive jet plume penetration length is mainly controlled the evaporation and condensation of molten metal. Investigation in present would build a fundamental for designing and operating of the jet reactor.