Computational modelling of flow and conjugate heat transfer of a drop impacting onto a cold wall

Markus Schremb*, Sven Borchert, Edin Berberovic, Suad Jakirlic, Ilia V. Roisman, Cameron Tropea

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)

Abstract

The flow and heat transfer in water drops impinging onto a dry cold surface has been computationally investigated. This situation pertains to aircraft icing or icing of power lines. The computational model solves the hydrodynamics using an algebraic implicit volume-of-fluid-based method for interface capturing with an extension for the simultaneous solution of the heat transfer within the drop and underlying substrate. The numerical solution is validated by computing a series of configurations of two-phase fluid flow and conjugate heat transfer for which experimental and analytical results are available in the literature. In a parametric study, the effect of the impact conditions and initial surface temperatures on the minimum liquid temperature reached and the heat transfer during drop impact are examined, representing the quantities relevant for nucleation and icing modelling. It is shown that these quantities do not depend on the impact conditions. However, the amount of heat transferred between the fluid and the wall is affected by the contact time and area available for heat transfer, which are determined by the impact conditions. Based on the numerical results, a semi-empirical model is developed, which accurately predicts the total heat transferred during a single impact event.
Original languageEnglish
Pages (from-to)971-980
JournalInternational journal of heat and mass transfer
Volume109
Early online date26 Mar 2017
DOIs
Publication statusPublished - Jun 2017
Externally publishedYes

Keywords

  • n/a OA procedure

Fingerprint

Dive into the research topics of 'Computational modelling of flow and conjugate heat transfer of a drop impacting onto a cold wall'. Together they form a unique fingerprint.

Cite this