화학공학소재연구정보센터
Canadian Journal of Chemical Engineering, Vol.89, No.3, 460-468, 2011
NUMERICAL SIMULATION PROCESS ASPECTS OF THE NOVEL STATIC CIRCULATING JET MIXER
A novel jet mixer was developed in virtue of static jet mixing and the static sealing technique. In this paper, the SST kappa - omega model was chosen to simulate the flow field by analysing the flow pattern of multiple jets in the novel static circulating jet mixer (SCJM). The numerical predictions of mixing time in the upward pointing side entry jet were found in good agreement with the experimental as well as the results reported in the literature. The transport mechanism of fluid in novel SCJM was studied using PDF and higher order items of turbulent flow. Because of the mutual adsorption between the adjacent jets, the main jet velocity did not comply with self-similarity and the jet axis has an offset when the L/R-0 is above 0.231. The distributions of flatness and skewness in SCJM are out of normal distribution which indicated the existence of coherent structure. The optimum parameters, jet angle, and baffle length, were revealed by comparison of the energy dissipation ratios in many cases.