RT Journal Article
ID 30e76ae66d28825d
A1 Senoner, Jean-Mathieu
A1 Castanet, Guillaume
A1 Caballina, Ophelie
A1 Villedieu, P. 
T1 MODELING OF WATER DROP IMPACTIONS IN THE LEIDENFROST REGIME
JF Atomization and Sprays
JO AAS
YR 2016
FD 2016-06-10
VO 26
IS 9
SP 853
OP 888
K1 drop impactions
K1 Leidenfrost regime
K1 modeling for dispersed spray solvers
 
AB Experiments of monosized water drop train impingement on a surface heated well above the Leidenfrost temperature are used to derive empirical and semi empirical models describing the dynamics of the reemited drops for the general case of non-normal impacts. The experimental setup combines shadowgraphy with high-speed imaging to obtain both the size and trajectories of the reemited drops. The obtained data are analyzed to describe the impact dynamics and the properties of the reemited drops: contact time, maximum spread diameter and reemited velocities for the rebound regime, drop diameter and velocity distributions in the splashing regime. In the rebound regime, good agreement of the present experimental data with theoretical predictions of the literature based on a mechanical spring-mass analogy is observed. In the splashing regime, the arithmetic drop diameter distribution appears to evolve from a multimodal distribution at the rebound splashing threshold towards a single mode distribution. For both the rebound and splashing regimes, the initial velocity component tangential to the impinged surface is damped proportionally to the normal Weber number. In the splashing regime, the average velocity of the reemited drops normal to the surface appears almost independent of the normal impact Weber number when normalized by its initial value.
PB Begell House
LK https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,5e2a416b5f95bb47,30e76ae66d28825d.html