Author(s): Deng Anyuan and Peng Yichuan
Pages: 283-289
Year: 1996 Issue:  4
Journal: The Chinese Journal of Process Engineering
Keyword:  Reynolds shear stress; Two-section model; Gas holdup; Entrainment ratio;
Abstract: With the aid of Reynolds shear stress, a two-section model for gas-liquid fiow in a bottom-blown ladle was developed. The model can predict the mean velocity, velocity distribution, jet diameter and mean gas holdup of two-phase flow at different cross sections both near the nozzle and in the plume. Numerical calculations indicate that the theoretical prediction of mean gas volume fraction agrees well with the experimental data. The mean gas holdup and mean velocity decrease with the axial distance, but the mean velocity increases with the gas flow rate, the jet diameter increases with the distance, and the entrainment ratio decreases with the increase of gas flow rate. The behavior of gas-liquid flow in the bottom-blown ladle can be described well by the proposed two-section model.