Numerical simulation of liquid jet breakup using smoothed particle hydrodynamics (SPH)

TL;DR

This paper demonstrates the use of an enhanced SPH method to simulate liquid jet breakup, validating results against experiments and comparing kernel functions, showing SPH's effectiveness for such fluid dynamics problems.

Contribution

The paper develops an SPH-based simulation model for liquid jet breakup, incorporating surface tension effects and validating with experimental data, highlighting SPH's accuracy and efficiency.

Findings

Wendland kernel yields more accurate results than cubic spline

Simulation results agree with experimental correlations for breakup length

SPH is effective for modeling liquid jet breakup phenomena

Abstract

In this paper, breakup of liquid jet is simulated using smoothed particle hydrodynamics (SPH) which is a meshless Lagrangian numerical method. For this aim, flow governing equations are discretized based on SPH method. In this paper, SPHysics open source code has been utilized for numerical solutions. Therefore, the mentioned code has been developed by adding the surface tension effects. The proposed method is then validated using dam break with obstacle problem. Finally, simulation of twodimensional liquid jet flow is carried out and its breakup behavior considering one-phase flow is investigated. Length of liquid breakup in Rayleigh regime is calculated for various flow conditions such as different Reynolds and Weber numbers and the results are validated by an experimental correlation. The whole numerical solutions are accomplished for both Wendland and cubic spline kernel functions and Wendland kernel function gave more accurate results. The results are compared to MPS method for inviscid liquid as well. The accomplished modeling showed that smoothed particle hydrodynamics (SPH) is an efficient method for simulation of liquid jet breakup phenomena.