Numerical and analytic investigation of the dynamics of hollow droplet impact onto substrate

Autor:	V. V. Bublik, A. N. Cherepanov, O. P. Solonenko
Rok vydání:	2008
Předmět:	Nuclear and High Energy Physics Radiation Materials science Capillary action Shell (structure) Nanotechnology Mechanics Substrate (electronics) Adhesion Deformation (meteorology) Spherical shell Physics::Fluid Dynamics Moment (physics) Physics::Atomic and Molecular Clusters Particle
Zdroj:	Thermophysics and Aeromechanics. 15:631-641
ISSN:	1531-8699 0869-8643
DOI:	10.1007/s11510-008-0012-4
Popis:	A numerical and analytical model is proposed for the impact of a hollow melt droplet onto the surface of a solid polished substrate. The model is based on integral laws of the mass and energy conservation of the colliding droplet, it accounts for capillary and adhesion properties of the melt. The main parameters of the high-velocity deformation of a hollow particle have been computed: the variation of its height, shell thickness, and the contact spot diameter up to the moment of the spreading droplet solidification as well as the pressure variation inside the droplet until the moment of the shell rupture. The critical pressure value at which the rupture occurs is estimated by a formula characterizing the spherical shell strength. Quite a fair agreement of the computed values of the final diameter of the splat of a spread and solidified droplet with the data of physical experiment is shown.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::68869a468dd88a54771593e1f8357462 https://doi.org/10.1007/s11510-008-0012-4 Zobrazit plný text záznamu Full text from SpringerLink