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 journalArticlepeer-review

151 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

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Heat transfer and fluid dynamics during the collision of a liquid droplet on a substrate - I. Modeling'. Together they form a unique fingerprint.

Cite this