DNS of droplet impact on a solid particle: Effect of wettability on solid conjugate heat transfer

Saurish Das, A. Panda, H. V. Patel, N. G. Deen, J. A.M. Kuipers (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Heat transfer between solid particles and liquid droplets is a key phenomenon encountered in many industrial applications. We investigate the fluid dynamics and heat transfer between a liquid droplet and a static solid particle by means of direct numerical simulations. The presence of the solid particle is represented through a sharp interface immersed boundary method (IBM) on a Cartesian computational grid, whereas the motion of the gas-liquid interface is tracked by a mass conservative volume of fluid method (VOF). To account for the thermal coupling between the gas and the liquid, and more specifically the conjugate heat transfer between the fluid and the solid, a second order accurate diffused interface formulation is proposed for the conduction term in the energy equation. A detailed validation of the method is also presented. We have studied the effect of wettability and solid conductivity both of which have been found to have significant effect on the total heat transfer rate.

Original languageEnglish
Article number119859
Number of pages15
JournalInternational Journal of Heat and Mass Transfer
Volume158
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Conjugate heat transfer
  • Gas-Liquid-Solid flow
  • Heat transfer
  • Three phase flow
  • Trickle bed
  • Wettability

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