Impact and boiling characteristics of a droplet on heated surfaces: A 3D lattice Boltzmann study

Droplet impact dynamics on Janus-textured heated substrates

“…Finally, the droplet split into two sub-droplets due to the bursting of the growing vapor bubble. This case is also named transition boiling in some previous studies [13,22]. However, for the relatively low wettability at CA = 60 • , CA = 90 • and CA = 130 • , the directional rebound behavior is occur due to the unbalanced interfacial forces created by the heterogeneous architectures.…”

“…Since the pioneering experiments of droplet impact on a hot wall conducted by Wachters et al [5], a considerable number of experimental and numerical investigations of droplet impingement on heated substrates have been performed [6][7][8][9][10][11][12][13]. In 1997, Bernardin et al [6] used high-speed photography to capture the impact behavior of water droplets on a hot aluminum surface and show that the Weber number has a strong influence on the dynamic behavior of droplets.…”

“…Chantelot et al [12] experimentally studied the impact of volatile drops on superheated substrates and revealed the influences of the gas drainage and evaporation on the dynamic Leidenfrost transition. More recently, Xu et al [13] used the lattice Boltzmann (LB) method to study the droplet impingement on a heated surface, and the numerical results show three different rebound modes due to the nucleation, growth and rupture of the bubble.…”

“…The existing numerical research of impinging droplets was focused on the ratchet surfaces and uniform structural surfaces, e.g., Li et al [21] firstly used the LB method to simulate the self-propelled Leidenfrost droplets on ratchet surfaces. More recently, Xu et al [13] and Wang et al [22] numerically investigated the droplet impact on the substrate with uniform micro-structured surfaces. Framed in this general background, the dynamics for droplets impacting the Janus-textured heated surface are investigated from the numerical point of view in the present work.…”

“…Framed in this general background, the dynamics for droplets impacting the Janus-textured heated surface are investigated from the numerical point of view in the present work. The method used in this work is the so-called pseudopotential LB method [23], which has been widely used in previous studies of droplet impact on the heated substrates due to its remarkable computational efficiency, clear representation of the underlying microscopic physics, simplicity and versatility [13,21,22].…”