Heat Transfer and Laminar Flow Characteristics and Correlations of Single-Phase Wavy Microchannel

Zhiyi Tang, Li Chen, Zhuo Zhang, Wen Quan Tao*

*Corresponding author for this work

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

Abstract

As the demand for cooling electronic components continues to increase, the microchannel has become a widely applicable solution in electronic device cooling because of its excellent thermal characteristics and flexible structures. This paper focuses on the heat transfer process of a type of single-phase sinusoidal wavy microchannel heated from the bottom. A 3D model is established by COMSOL to perform stationary calculations for cases with the dimensionless amplitude (α) from 0 to 0.25 and Reynolds number (Re) from 60 to 1000. Temperature, velocity, and pressure distributions of the microchannel are calculated. Relationships between two sets of dimensionless parameters and equivalent thermal resistance (R), average Nusselt number (Nu), and friction coefficient (f) are investigated and presented. For α between 0.125 and 0.25, Re between 60 and 1000, and Prandtl number (Pr) within (6 ± 0.8), correlations of Nu and f are obtained through multi-parameter fitting. Performance evaluation criteria of wavy microchannels (PECwavy) are calculated, taking the straight rectangular microchannel (α = 0) as a reference. The case with α = 0.25 and Re = 1000 shows the greatest efficiency for Re between 400 and 1000.

Original languageEnglish
Title of host publicationAdvances in Computational Heat and Mass Transfer - Proceedings of the 14th International Conference on Computational Heat and Mass Transfer ICCHMT 2023
EditorsAli Cemal Benim, Rachid Bennacer, Abdulmajeed A. Mohamad, Paweł Ocłoń, Jan Taler, Sang-Ho Suh
PublisherSpringer Science and Business Media Deutschland GmbH
Pages298-307
Number of pages10
ISBN (Print)9783031666087
DOIs
Publication statusPublished - 2024
Externally publishedYes
Event14th International Conference on Computational Heat and Mass Transfer, ICCHMT 2023 - Düsseldorf, Germany
Duration: 4 Sept 20238 Sept 2023

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference14th International Conference on Computational Heat and Mass Transfer, ICCHMT 2023
Country/TerritoryGermany
CityDüsseldorf
Period4/09/238/09/23

Keywords

  • Friction coefficient
  • Heat Transfer Characteristics
  • Heat Transfer Correlations
  • Laminar Flow
  • Single-phase Flow
  • Wavy Microchannel

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