ID 153

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

 

Abstract:

The impact of liquid drops on a heated solid surface is of great importance in many engineering applica-tions. This paper describes the simulation of the drop-wall interaction using the smoothed particle hydrodynam-ics (SPH) method. The SPH method is a Lagrangian mesh-free method that can be used to solve the fluid equa-tions. 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 out-come. 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.