The impact of roughness parameters on laminar convective heat transfer applied to additive manufactured minichannels

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Roughness is an inherent feature of additively manufactured surfaces that can influence thermal performance. This study employed Computational Fluid Dynamics (CFD) to investigate the impact of the roughness characteristics, including average roughness height, root-mean-square height, skewness, and kurtosis, on the laminar convective heat transfer in minichannels. It was found that, compared to Gaussian roughness, the positively skewed, platykurtic and leptokurtic distribution increased heat transfer by 14.17, 15.50, and 11.22 %, while a marginal increase in the friction factor (almost 1.50 %) was observed. However, the Nusselt number of the negatively skewed distribution was 8.15 % less than the Gaussian, and its friction factor was also reduced by 1.30 % below Gaussian values. The finding demonstrated the capacity of rough surfaces with high peaks as a passive heat transfer enhancement method with marginal penalty in pressure drop.

Original languageEnglish
Title of host publicationTHERMINIC 2022 - 28th International Workshop on Thermal Investigations of ICs and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665492294
DOIs
Publication statusPublished - 2022
Event28th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2022 - Dublin, Ireland
Duration: 28 Sep 202230 Sep 2022

Publication series

NameTHERMINIC 2022 - 28th International Workshop on Thermal Investigations of ICs and Systems, Proceedings

Conference

Conference28th International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2022
Country/TerritoryIreland
CityDublin
Period28/09/2230/09/22

Keywords

  • additive manufacturing
  • computational fluid dynamics (CFD)
  • heat transfer
  • laminar flow
  • roughness

Fingerprint

Dive into the research topics of 'The impact of roughness parameters on laminar convective heat transfer applied to additive manufactured minichannels'. Together they form a unique fingerprint.

Cite this