Abstract
Particle-laden jet flows can be observed in many industrial applications. In this investigation, the horizontal motion of particle laden jets is simulated using the Eulerian–Lagrangian framework. The two-way coupling is applied to the model to simulate the interaction between discrete and continuum phase. In order to track the continuum phase, a passive scalar equation is added to the solver. Eddy Life Time (ELT) is employed as a dispersion model. The influences of different non-dimensional parameters, such as Stokes number, Jet Reynolds number and mass loading ratio on the flow characteristics, are studied. The results of the simulations are verified with the available experimental data. It is revealed that more gravitational force is exerted on the jet as a result of the increase in mass loading, which deflects it more. Moreover, with an increase in the Reynolds number, the speed of the jet rises, and consequently, the gravitational force becomes less capable of deviating the jet. In addition, it is observed that by increasing the Stokes number, the particles leave the jet at higher speed, which causes a lower deviation of the jet.
Highlights
Particle-laden jet flows have various engineering applications, such as fuel injection in internal combustion engines
In the case of the Lagrangian phase, the results show overestimated value for section Z⁄D = 10
In thea present influence of the presence of particles the jet motion (c)investigate direction, passive study, scalar to as a tracer the of concentration of the continuum phaseon is injected at the direction, passive scalar
Summary
Particle-laden jet flows have various engineering applications, such as fuel injection in internal combustion engines. Fan et al investigated the effect of dispersed phase on the flow characteristics of a coaxial jet with particles laden. The gas-phase and fluid-phase velocities show good agreement with the experimental results They investigated the effects of different parameters on the flow behavior, including particle size, Stokes number and mass loading ratio. The Eulerian–Eulerian method was applied to simulate particle-laden jet turbulent flow in Ref [8]. The effect of the Stokes number (stk) on the particle motion and turbulent characteristics of particle-laden flow in the channel was investigated by Lee [11]. The Stokes number (Stk) and concentration or loading ratios are important parameters in particle-laden flows to determine the coupling between solid and fluid phases. It shows that the effect of gravity on the motion of the jet can be seen clearly by the trajectory of particles
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