Predicting the outcomes of fuel drop impact on heated surfaces using SPH simulation

TL;DR

This paper presents a SPH-based simulation approach to predict various outcomes of liquid drop impacts on heated surfaces, including vaporization, splash, and rebound, with a focus on engineering applications.

Contribution

It introduces a vaporization model within the SPH framework and constructs a regime diagram for drop impact outcomes at different conditions.

Findings

Successfully predicts impact outcomes like deposition, splash, and rebound.

Develops a regime diagram for impact behavior based on Weber number and temperature.

Demonstrates the effectiveness of SPH in simulating complex fluid-surface interactions.

Abstract

The impact of liquid drops on a heated solid surface is of great importance in many engineering applications. This paper describes the simulation of the drop-wall interaction using the smoothed particle hydrodynamics (SPH) method. The SPH method is a Lagrangian mesh-free method that can be used to solve the fluid equations. A vaporization model based on the SPH formulation was also developed and implemented. A parametric study was conducted to characterize the effects of impact velocity and wall temperature on the impact outcome. The present numerical method was able to predict different outcomes, such as deposition, splash, breakup, and rebound (i.e., Leidenfrost phenomenon). The present numerical method was used to construct a regime diagram for describing the impact of an iso-octane drop on a heated surface at various Weber numbers and wall temperatures.