Heat transfer and fluid dynamics during the collision of a liquid droplet on a substrate - I. Modeling

Z. Zhao, D. Poulikakos, J. Fukai

Research output: Contribution to journalArticle

146 Citations (Scopus)

Abstract

This paper presents a numerical study of the fluid dynamics and heat transfer phenomena during the impingement of a liquid droplet upon a substrate. The theoretical model, based on the Lagrangian formulation, is solved numerically utilizing the finite element method. A deforming mesh is utilized to simulate accurately the large deformations, as well as the domain nonuniformity characteristic of the spreading process. The occurrence of droplet recoiling and mass accumulation around the splat periphery are standout features of the numerical simulations and yield a nonmonotonic dependence of the maximum splat radius on time. The temperature fields developing in both the liquid droplet and the substrate during the impingement process are also determined. To this end, liquid metal and water droplet collisions on different substrates were investigated. Convection effects on the temperature field development were found to be important for the entire history of spreading. These effects resulted sometimes in a practically radial temperature variation at late stages of spreading, particularly so in the cases of high impact velocities.

Original languageEnglish
Pages (from-to)2771-2789
Number of pages19
JournalInternational Journal of Heat and Mass Transfer
Volume39
Issue number13
DOIs
Publication statusPublished - Sep 1996

Fingerprint

fluid dynamics
Fluid dynamics
impingement
heat transfer
Heat transfer
collisions
Liquids
temperature distribution
Substrates
liquids
recoilings
Temperature distribution
impact velocity
liquid metals
nonuniformity
mesh
finite element method
convection
Liquid metals
histories

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Heat transfer and fluid dynamics during the collision of a liquid droplet on a substrate - I. Modeling. / Zhao, Z.; Poulikakos, D.; Fukai, J.

In: International Journal of Heat and Mass Transfer, Vol. 39, No. 13, 09.1996, p. 2771-2789.

Research output: Contribution to journalArticle

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