Equilibrium computations of multiphase nonideal electrolytic systems and structure of turbulent reacting dissolving jets

Abstract

The objectives of the paper are two-fold. First, a method has been presented and a computer program developed for the computation of chemical equilibrium of complex reacting, nonideal, multiphase and electrolytic mixtures Validity, of the program has been confirmed by comparing the calculated values with experimental solubility data of three binary systems. Applications have been made to hydrogen chloride gas and aqueous ammonia reacting dissolving systems. Extensive state relationships as a function of mixture fraction have been generated for ammonia solutions over a wide range of ammonia concentrations. The second objective is to investigate the structure of a turbulent, gaseous, reacting, dissolving hydrogen chloride jet submerged in an aqueous ammonia bath. The use of HCl(g) as oxidizer and NH 3(aq) as fuel has been of recent interest to simulate the tubulent combustion of a haogenegaseous oxidizer with an alkali liquid metal fuel. With the state relationships generated, the k -∈-g turbulent model, the local homogeneous two-phase flow approximation and a clipped Gaussian probability function for the square of the mixture fraction flucations, predictions have been made for the plume penetration length, temperature, voil fraction and concentration profiles of the plume. It is found that the total plume penetration length is controlled by the extent of vaporization of the bath liquid, which is governed by the concentration of the ammonia fuel. The theoretical calculations are found in good agreement with the recent experimental data, which include the maximum plume temperature, the plume penetration lengths and the void fraction profile.