CO2 액포 운동 시뮬레이션

Abstract

In order to presume the dilutive range caused by CO2 injection into the ocean(CO2 ocean sequestration), a detail estimation of dissolution rate from a CO2 droplet is necessary because the mass transfer from a CO2 droplet such as a sub-grid scale process has based on understanding the large dilution process. The free rising CO2 droplet has the moving interface which takes effect its mass transfer. To elucidate some relations between the rising CO2 droplet behavior and dissolution from its interface, a numerical simulation method has been developed. The two-phase simulation of CO2 droplet with dissolution into sea-water has carried on the front-tracking method with a re-mesh technique in three dimensional unstructured meshes. The motion of the free rising droplet has three path-types of rectilinear, helical, and zigzag as the Reynolds number and the Ohnesorge number based on the rising velocity and surface tension respectively. To verify the CFD(Computational Fluid Dynamics) code, a rise droplet behavior compares its simulation with an experimental results on the silicon-water two-phase system.