Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes

Publikation: Konferencebidrag uden forlag/tidsskriftPaper uden forlag/tidsskriftForskningpeer review

Resumé

Even though the corrugated tube is a widely used technique to enhance transfer heat, the exact heat transfer enhancing mechanism remains relatively un-documented. Most studies attribute the favourable heat transfer characteristics to a swirling flow being present at higher corrugation.
In this study, a systematic approach relying on Computational Fluid Dynamics (CFD) is used to study and compare the heat transfer characteristics with the detailed flow field in the spirally corrugated tubes. By comparing the flow in 12 different spirally corrugated tubes at a fixed Reynolds number of 5000, this study compares the flow field with the surface averaged Nusselt number to gain valuable insight into which flow phenomena causes favourable heat transfer characteristics. While the flow at low corrugations approximates the non-corrugated tube, higher corrugations of h/D creates a significant tangential velocity that enhances heat transfer. At this corrugation height, there is a corrugation length of approximately l/D=1.5 that maximises the tangential velocity component and consequently heat transfer.
OriginalsprogEngelsk
Publikationsdatomar. 2016
Antal sider5
StatusUdgivet - mar. 2016
BegivenhedThe First Pacific Rim Thermal Engineering Conference - Waikoloa Beach Marriott Resort & Spa Hawaii's Big Island, Waikoloa Beach, Hawaii, USA
Varighed: 13 mar. 201617 mar. 2016
Konferencens nummer: 1
http://www.jsme.or.jp/ted/PRTEC2016/

Konference

KonferenceThe First Pacific Rim Thermal Engineering Conference
Nummer1
LokationWaikoloa Beach Marriott Resort & Spa Hawaii's Big Island
LandUSA
ByWaikoloa Beach, Hawaii
Periode13/03/201617/03/2016
Internetadresse

Fingerprint

Flow fields
Heat transfer
Swirling flow
Nusselt number
Computational fluid dynamics
Reynolds number

Citer dette

Hærvig, J., Condra, T. J., & Sørensen, K. (2016). Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes. Afhandling præsenteret på The First Pacific Rim Thermal Engineering Conference, Waikoloa Beach, Hawaii, USA.
Hærvig, Jakob ; Condra, Thomas Joseph ; Sørensen, Kim. / Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes. Afhandling præsenteret på The First Pacific Rim Thermal Engineering Conference, Waikoloa Beach, Hawaii, USA.5 s.
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title = "Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes",
abstract = "Even though the corrugated tube is a widely used technique to enhance transfer heat, the exact heat transfer enhancing mechanism remains relatively un-documented. Most studies attribute the favourable heat transfer characteristics to a swirling flow being present at higher corrugation.In this study, a systematic approach relying on Computational Fluid Dynamics (CFD) is used to study and compare the heat transfer characteristics with the detailed flow field in the spirally corrugated tubes. By comparing the flow in 12 different spirally corrugated tubes at a fixed Reynolds number of 5000, this study compares the flow field with the surface averaged Nusselt number to gain valuable insight into which flow phenomena causes favourable heat transfer characteristics. While the flow at low corrugations approximates the non-corrugated tube, higher corrugations of h/D creates a significant tangential velocity that enhances heat transfer. At this corrugation height, there is a corrugation length of approximately l/D=1.5 that maximises the tangential velocity component and consequently heat transfer.",
keywords = "CFD, Spirally corrugated tubes, Stream-wise periodic boundaries, Fully-developed flow, Parameter variation",
author = "Jakob H{\ae}rvig and Condra, {Thomas Joseph} and Kim S{\o}rensen",
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language = "English",
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Hærvig, J, Condra, TJ & Sørensen, K 2016, 'Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes' Paper fremlagt ved The First Pacific Rim Thermal Engineering Conference, Waikoloa Beach, Hawaii, USA, 13/03/2016 - 17/03/2016, .

Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes. / Hærvig, Jakob; Condra, Thomas Joseph; Sørensen, Kim.

2016. Afhandling præsenteret på The First Pacific Rim Thermal Engineering Conference, Waikoloa Beach, Hawaii, USA.

Publikation: Konferencebidrag uden forlag/tidsskriftPaper uden forlag/tidsskriftForskningpeer review

TY - CONF

T1 - Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes

AU - Hærvig, Jakob

AU - Condra, Thomas Joseph

AU - Sørensen, Kim

PY - 2016/3

Y1 - 2016/3

N2 - Even though the corrugated tube is a widely used technique to enhance transfer heat, the exact heat transfer enhancing mechanism remains relatively un-documented. Most studies attribute the favourable heat transfer characteristics to a swirling flow being present at higher corrugation.In this study, a systematic approach relying on Computational Fluid Dynamics (CFD) is used to study and compare the heat transfer characteristics with the detailed flow field in the spirally corrugated tubes. By comparing the flow in 12 different spirally corrugated tubes at a fixed Reynolds number of 5000, this study compares the flow field with the surface averaged Nusselt number to gain valuable insight into which flow phenomena causes favourable heat transfer characteristics. While the flow at low corrugations approximates the non-corrugated tube, higher corrugations of h/D creates a significant tangential velocity that enhances heat transfer. At this corrugation height, there is a corrugation length of approximately l/D=1.5 that maximises the tangential velocity component and consequently heat transfer.

AB - Even though the corrugated tube is a widely used technique to enhance transfer heat, the exact heat transfer enhancing mechanism remains relatively un-documented. Most studies attribute the favourable heat transfer characteristics to a swirling flow being present at higher corrugation.In this study, a systematic approach relying on Computational Fluid Dynamics (CFD) is used to study and compare the heat transfer characteristics with the detailed flow field in the spirally corrugated tubes. By comparing the flow in 12 different spirally corrugated tubes at a fixed Reynolds number of 5000, this study compares the flow field with the surface averaged Nusselt number to gain valuable insight into which flow phenomena causes favourable heat transfer characteristics. While the flow at low corrugations approximates the non-corrugated tube, higher corrugations of h/D creates a significant tangential velocity that enhances heat transfer. At this corrugation height, there is a corrugation length of approximately l/D=1.5 that maximises the tangential velocity component and consequently heat transfer.

KW - CFD

KW - Spirally corrugated tubes

KW - Stream-wise periodic boundaries

KW - Fully-developed flow

KW - Parameter variation

M3 - Paper without publisher/journal

ER -

Hærvig J, Condra TJ, Sørensen K. Numerical Investigation of the Fully-Developed Periodic Flow Field for Optimal Heat Transfer in Spirally Corrugated Tubes. 2016. Afhandling præsenteret på The First Pacific Rim Thermal Engineering Conference, Waikoloa Beach, Hawaii, USA.