Heterogeneous Turbulent Jets of the Mutually Immiscible Liquids: the Mixing and Heat Transfer Processes

TL;DR

This paper models and analyzes turbulent mixing and heat transfer in jets of mutually immiscible liquids, with applications to nuclear safety and industrial processes, using differential equations and integral correlations.

Contribution

It introduces a new modeling approach for turbulent mixing and heat transfer in immiscible liquid jets, including simulations of high-temperature liquid metal flows.

Findings

Model successfully predicts turbulent mixing parameters.

Simulation results align with experimental data.

Applicable to nuclear safety and industrial processes.

Abstract

Many natural and technical processes deal with the turbulent mixing and heat transfer in the jet of mutually immiscible liquids, which represent an important class of the modern multiphase systems dynamics. The differential equations for axisymmetrical two-dimensional stationary flow and the integral correlations in a cylindrical coordinate system are considered for the free and confined jets. The parameters of the turbulent mixing in a free jet and in two-phase flow in a chamber are modelled and analyzed. One example is also done for high-temperature flow of the liquid metal melt cooled by water in a simulation of the hypothetic severe accidents at the nuclear power plant is presented and compared to the experimental data. The algorithm and the results obtained may be of interest for some research and industrial tasks, where calculation of the parameters of multiphase turbulent mixing and heat transfer are important.