Effect of interphase heat transfer on bulk condensation in dust-laden vapor-gas flow

Abstract

The model was proposed for homogeneous-heterogeneous bulk condensation in vapor-gas flow with dust particles. The feature of the model is taking into account temperature difference between gaseous phase and dust particles (with condensate on them). Calculations were carried out for mixture of D2O (vapor) and N2 (gas). The model was verified by comparison of results for the flow without dust with experimental data. Results were obtained for different values of mass fraction of dust, radius of dust particles and their initial subcooling. It was shown that there is minimal initial subcooling at which there is liquid on dust particles at nozzle outlet. This value depends on size of particles and mass fraction of dust.

Application of the Moment Method for Numerical Simulation of Homogeneous-Heterogeneous Condensation

“…Often in applications, problems arise when homogeneous and heterogeneous condensation is realized simultaneously in gas-dynamic flows [40]. In cases where the degree of supersaturation S has very large values [29,30], homogeneous condensation prevails in the medium.…”