Abstract

This paper investigates heat transfer enhancement by means of additively manufactured static mixers during liquid water cooling of a horizontal, heated flat plate. The static mixers disrupt the thermal boundary layer and induce mixing, resulting in an increased heat transfer rate of about 2X larger than flows without mixers. Simulations of the flows provided insights into the flows near the mixers, and guided selection of specific mixer geometries. The mixers were fabricated directly into the flow channels using additive manufacturing and then assembled onto the heated plate. Two types of mixing structures were analyzed: twisted tape structures that are similar to conventional static mixers; and novel chevron-shaped offset wing structures. Heat transfer performance was measured for liquid water (510 ≤ Re ≤ 1366) cooling the heated section with convective heat flux ranging between 0.1 and 0.8 W/cm2. This work demonstrates the potential of additive manufacturing to enable novel flow geometries that can enhance convection heat transfer whilst minimizing pressure drop penalties and volumes.

Original languageEnglish (US)
Pages (from-to)292-300
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume137
DOIs
StatePublished - Jul 2019

Fingerprint

3D printers
laminar flow
Laminar flow
heat transfer
Heat transfer
augmentation
Heat convection
Geometry
Liquids
Cooling water
Channel flow
liquid cooling
Tapes
Pressure drop
Heat flux
Boundary layers
Cooling
manufacturing
Water
flow geometry

Keywords

  • Additive manufacturing
  • Convection heat transfer
  • Heat transfer enhancement
  • Static mixer

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Heat transfer enhancement of internal laminar flows using additively manufactured static mixers. / Kwon, Beomjin; Liebenberg, Leon; Jacobi, Anthony M; King, William Paul.

In: International Journal of Heat and Mass Transfer, Vol. 137, 07.2019, p. 292-300.

Research output: Contribution to journalArticle

@article{a7badd7db9a74b0d91ed419d733b1e51,
title = "Heat transfer enhancement of internal laminar flows using additively manufactured static mixers",
abstract = "This paper investigates heat transfer enhancement by means of additively manufactured static mixers during liquid water cooling of a horizontal, heated flat plate. The static mixers disrupt the thermal boundary layer and induce mixing, resulting in an increased heat transfer rate of about 2X larger than flows without mixers. Simulations of the flows provided insights into the flows near the mixers, and guided selection of specific mixer geometries. The mixers were fabricated directly into the flow channels using additive manufacturing and then assembled onto the heated plate. Two types of mixing structures were analyzed: twisted tape structures that are similar to conventional static mixers; and novel chevron-shaped offset wing structures. Heat transfer performance was measured for liquid water (510 ≤ Re ≤ 1366) cooling the heated section with convective heat flux ranging between 0.1 and 0.8 W/cm2. This work demonstrates the potential of additive manufacturing to enable novel flow geometries that can enhance convection heat transfer whilst minimizing pressure drop penalties and volumes.",
keywords = "Additive manufacturing, Convection heat transfer, Heat transfer enhancement, Static mixer",
author = "Beomjin Kwon and Leon Liebenberg and Jacobi, {Anthony M} and King, {William Paul}",
year = "2019",
month = "7",
doi = "10.1016/j.ijheatmasstransfer.2019.03.133",
language = "English (US)",
volume = "137",
pages = "292--300",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Heat transfer enhancement of internal laminar flows using additively manufactured static mixers

AU - Kwon, Beomjin

AU - Liebenberg, Leon

AU - Jacobi, Anthony M

AU - King, William Paul

PY - 2019/7

Y1 - 2019/7

N2 - This paper investigates heat transfer enhancement by means of additively manufactured static mixers during liquid water cooling of a horizontal, heated flat plate. The static mixers disrupt the thermal boundary layer and induce mixing, resulting in an increased heat transfer rate of about 2X larger than flows without mixers. Simulations of the flows provided insights into the flows near the mixers, and guided selection of specific mixer geometries. The mixers were fabricated directly into the flow channels using additive manufacturing and then assembled onto the heated plate. Two types of mixing structures were analyzed: twisted tape structures that are similar to conventional static mixers; and novel chevron-shaped offset wing structures. Heat transfer performance was measured for liquid water (510 ≤ Re ≤ 1366) cooling the heated section with convective heat flux ranging between 0.1 and 0.8 W/cm2. This work demonstrates the potential of additive manufacturing to enable novel flow geometries that can enhance convection heat transfer whilst minimizing pressure drop penalties and volumes.

AB - This paper investigates heat transfer enhancement by means of additively manufactured static mixers during liquid water cooling of a horizontal, heated flat plate. The static mixers disrupt the thermal boundary layer and induce mixing, resulting in an increased heat transfer rate of about 2X larger than flows without mixers. Simulations of the flows provided insights into the flows near the mixers, and guided selection of specific mixer geometries. The mixers were fabricated directly into the flow channels using additive manufacturing and then assembled onto the heated plate. Two types of mixing structures were analyzed: twisted tape structures that are similar to conventional static mixers; and novel chevron-shaped offset wing structures. Heat transfer performance was measured for liquid water (510 ≤ Re ≤ 1366) cooling the heated section with convective heat flux ranging between 0.1 and 0.8 W/cm2. This work demonstrates the potential of additive manufacturing to enable novel flow geometries that can enhance convection heat transfer whilst minimizing pressure drop penalties and volumes.

KW - Additive manufacturing

KW - Convection heat transfer

KW - Heat transfer enhancement

KW - Static mixer

UR - http://www.scopus.com/inward/record.url?scp=85063411809&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063411809&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2019.03.133

DO - 10.1016/j.ijheatmasstransfer.2019.03.133

M3 - Article

AN - SCOPUS:85063411809

VL - 137

SP - 292

EP - 300

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -