TY  - JOUR
AB  - Purpose This paper aims to introduce a three-dimensional smoothed particle hydrodynamics (SPH) framework for simulating supercooled large droplets (SLD) dynamics at aeronautical speeds.Design/methodology/approach To include the effects of the surrounding air, a multiphase model capable of handling high density-ratio problems is adopted. A diffusive term is incorporated to smooth the density field and avoid numerical instabilities. Additionally, a particle shifting technique is used to eliminate anisotropic particle distributions.Findings The framework is validated against low-speed droplet impingement experimental results and then applied to the droplet impingement at high speeds typical of SLD conditions. Preliminary parametric studies are conducted to investigate the post-impact splashing. It is observed that a thicker water film can decrease the crown diameter and a smaller impact angle can suppress upward and forward splashing.Originality/value A three-dimensional multiphase SPH framework for SLD dynamics at a wide range of impact speed is developed and validated. The effects of particle resolution, water film thickness and impact angle on the post-impact crown evolution are investigated.
VL  - 29
IS  - 7
SN  - 0961-5539
DO  - 10.1108/HFF-10-2018-0547
UR  - https://doi.org/10.1108/HFF-10-2018-0547
AU  - Cui Xiangda
AU  - Bakkar Ahmed
AU  - Habashi Wagdi George
PY  - 2019
Y1  - 2019/01/01
TI  - A multiphase SPH framework for supercooled large droplets dynamics
T2  - International Journal of Numerical Methods for Heat & Fluid Flow
PB  - Emerald Publishing Limited
SP  - 2434
EP  - 2449
Y2  - 2024/05/06
ER  -