Development of an algebraic wall heat transfer model for LES in IC engines using DNS data

Michele Bolla*, Matteo Impagnatiello, Karri Keskinen, George Giannakopoulos, Christos E. Frouzakis, Yuri M. Wright, Konstantinos Boulouchos

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This paper presents a novel algebraic wall-modeled large-eddy simulation (WMLES) approach for wall heat transfer (WHT) in internal combustion engines (ICE) using recent high-fidelity simulation data from two real ICE and a flame-wall interaction (FWI) setup. The model formulation is based on intuitive arguments rather than simplified forms of near-wall governing equations. Input information from the two wall-normal wall-adjacent nodes is used, facilitating the interpretation of the local state of the thermal boundary layer (TBL). With filtered direct numerical simulation (DNS) data (i.e. a ?perfect? LES), model performance is evaluated locally at different near-wall resolutions. The proposed model is compared to a widely used wall function (WF) approach and to a data-driven model.

? 2020 Published by Elsevier Inc. on behalf of The Combustion Institute.

Original languageEnglish
Pages (from-to)5811-5819
Number of pages9
JournalProceedings of the Combustion Institute
Volume38
Issue number4
DOIs
Publication statusPublished - 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Wall heat transfer
  • IC engines
  • Wall-modeled LES
  • LES
  • DNS
  • Data-driven

Cite this