A CFD study of a partial combustion lance

A computational fluid dynamics (cfd) simulation of a partial combustion lance (pcl) was presented. the major aim of this paper is to evaluate the influence of oxygen flowrate on its performance. firstly,a modelling strategy was developed by comparing discretisation schemes,pressure interpolation schemes and reynolds-averaged navier-stokes (rans) based turbulence models. three rans based models were chosen in this work,namely,standard k-ε (ske),realisable k-ε (rke) and renormalised (rng) k-ε. convection and radiation were considered in the heat transfer modelling,whereas combustion was modelled using finite rate-eddy dissipation model. the finding suggested that second-order scheme,standard pressure scheme and ske provide the best prediction,yielding an error of 5.86% from the experimentally measured temperature. it was found that 40% increase in oxygen flowrate increased the peak combustion temperature of the pcl by about 12%. dual lance was found to be more effective than the single lance operating at a similar flowrate. results from this work suggests that the performance of a pcl is significantly depends on the operating condition. cfd tool is useful to improve the performance of a combustion system. © school of engineering,taylor’s university.