J0101-1-3 Supersonic Flow Simulation of Supercritical Carbon Dioxide with Phase change

Abstract

Our research group has proposed a numerical method for supercritical fluids; Supercritical Fluid Simulator (SFS). In SFS, a numerical method based on the preconditioning method coupled with PROPATH is used. In this paper, we compute a supersonic free-jet assuming gas using SFS. Next, we compute a supersonic jet of supercritical CO_2 impacting on a flat plate with the drastic pressure decrease near the critical point. In both simulations, our results show good agreements with the experimental data. These results indicate the importance of numerical models considering accurate thermophysical properties for simulating supersonic flows of supercritical CO_2, such as RESS-process.