NUMERICAL-STUDIES OF MULTIPHASE MIXING WITH APPLICATION TO SOME SMALL-SCALE EXPERIMENTS

Numerous experimental and modelling studies of the premixing stage of a steam explosion are underway world-wide. While there is encouraging agreement between model results and experimental data for medium-scale tests, the agreement for small-scale tests has been less encouraging. In this paper, we show that this discrepancy can be accounted for by the need to use higher order differencing schemes for the convection t erms in the conservation equations. When such schemes are used, the fe atures of the experiment are reproduced. We present results obtained u sing various total variation diminishing schemes, quantify the effect of added mass and lift forces, and investigate the effect of interfaci al drag modelling.