Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region

Dong Myeong Lee, Jun Su Park, Dong Hyun Lee, Beom Soo Kim, Hyung Hee Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The present study investigated convective heat transfer inside a two-pass rectangular duct with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The duct had a hydraulic diameter (Dh) of 26.67 mm and an aspect ratio (AR) of 5. The duct inlet width was 80 mm, and the distance between the tip of the divider and the tip wall of the duct was also 80 mm. Various guide vane configurations were used in the turning region. The Reynolds number (Re), based on the hydraulic diameter, was held constant at 10,000. The naphthalene sublimation technique was used to determine the detailed local heat transfer coefficients, using the heat and mass transfer analogy. The results indicated that guide vanes in the turning region enhanced heat transfer in the blade tip region. The guide vane on the second-pass side of the turning region had higher heat transfer than the guide vane on the first-pass side. Strong secondary flow enhanced heat transfer in the blade tip region. Dean vortices induced by the guide vanes pushed the high momentum core flow towards the tip wall, and heat transfer was increased in the turning region, but decreased in the second passage. Consequently, a guide vane on the second-pass side of the turning region generates high heat transfer rates on the tip surface, and can also increase the thermal performance factor in a two-pass duct.

Original languageEnglish
Title of host publicationASME 2011 Turbo Expo
Subtitle of host publicationTurbine Technical Conference and Exposition, GT2011
Pages1351-1362
Number of pages12
Volume5
EditionPARTS A AND B
DOIs
Publication statusPublished - 2011 Dec 1
EventASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 - Vancouver, BC, Canada
Duration: 2011 Jun 62011 Jun 10

Other

OtherASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011
CountryCanada
CityVancouver, BC
Period11/6/611/6/10

Fingerprint

Ducts
Heat transfer
Hydraulics
Secondary flow
Sublimation
Naphthalene
Heat transfer coefficients
Aspect ratio
Momentum
Vortex flow
Reynolds number
Mass transfer
Cooling

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lee, D. M., Park, J. S., Lee, D. H., Kim, B. S., & Cho, H. H. (2011). Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region. In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011 (PARTS A AND B ed., Vol. 5, pp. 1351-1362) https://doi.org/10.1115/GT2011-45962
Lee, Dong Myeong ; Park, Jun Su ; Lee, Dong Hyun ; Kim, Beom Soo ; Cho, Hyung Hee. / Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region. ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011. Vol. 5 PARTS A AND B. ed. 2011. pp. 1351-1362
@inproceedings{34e54f7ba77240d5ad52cb1e4d0561ce,
title = "Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region",
abstract = "The present study investigated convective heat transfer inside a two-pass rectangular duct with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The duct had a hydraulic diameter (Dh) of 26.67 mm and an aspect ratio (AR) of 5. The duct inlet width was 80 mm, and the distance between the tip of the divider and the tip wall of the duct was also 80 mm. Various guide vane configurations were used in the turning region. The Reynolds number (Re), based on the hydraulic diameter, was held constant at 10,000. The naphthalene sublimation technique was used to determine the detailed local heat transfer coefficients, using the heat and mass transfer analogy. The results indicated that guide vanes in the turning region enhanced heat transfer in the blade tip region. The guide vane on the second-pass side of the turning region had higher heat transfer than the guide vane on the first-pass side. Strong secondary flow enhanced heat transfer in the blade tip region. Dean vortices induced by the guide vanes pushed the high momentum core flow towards the tip wall, and heat transfer was increased in the turning region, but decreased in the second passage. Consequently, a guide vane on the second-pass side of the turning region generates high heat transfer rates on the tip surface, and can also increase the thermal performance factor in a two-pass duct.",
author = "Lee, {Dong Myeong} and Park, {Jun Su} and Lee, {Dong Hyun} and Kim, {Beom Soo} and Cho, {Hyung Hee}",
year = "2011",
month = "12",
day = "1",
doi = "10.1115/GT2011-45962",
language = "English",
isbn = "9780791854655",
volume = "5",
pages = "1351--1362",
booktitle = "ASME 2011 Turbo Expo",
edition = "PARTS A AND B",

}

Lee, DM, Park, JS, Lee, DH, Kim, BS & Cho, HH 2011, Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region. in ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011. PARTS A AND B edn, vol. 5, pp. 1351-1362, ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011, Vancouver, BC, Canada, 11/6/6. https://doi.org/10.1115/GT2011-45962

Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region. / Lee, Dong Myeong; Park, Jun Su; Lee, Dong Hyun; Kim, Beom Soo; Cho, Hyung Hee.

ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011. Vol. 5 PARTS A AND B. ed. 2011. p. 1351-1362.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region

AU - Lee, Dong Myeong

AU - Park, Jun Su

AU - Lee, Dong Hyun

AU - Kim, Beom Soo

AU - Cho, Hyung Hee

PY - 2011/12/1

Y1 - 2011/12/1

N2 - The present study investigated convective heat transfer inside a two-pass rectangular duct with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The duct had a hydraulic diameter (Dh) of 26.67 mm and an aspect ratio (AR) of 5. The duct inlet width was 80 mm, and the distance between the tip of the divider and the tip wall of the duct was also 80 mm. Various guide vane configurations were used in the turning region. The Reynolds number (Re), based on the hydraulic diameter, was held constant at 10,000. The naphthalene sublimation technique was used to determine the detailed local heat transfer coefficients, using the heat and mass transfer analogy. The results indicated that guide vanes in the turning region enhanced heat transfer in the blade tip region. The guide vane on the second-pass side of the turning region had higher heat transfer than the guide vane on the first-pass side. Strong secondary flow enhanced heat transfer in the blade tip region. Dean vortices induced by the guide vanes pushed the high momentum core flow towards the tip wall, and heat transfer was increased in the turning region, but decreased in the second passage. Consequently, a guide vane on the second-pass side of the turning region generates high heat transfer rates on the tip surface, and can also increase the thermal performance factor in a two-pass duct.

AB - The present study investigated convective heat transfer inside a two-pass rectangular duct with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The duct had a hydraulic diameter (Dh) of 26.67 mm and an aspect ratio (AR) of 5. The duct inlet width was 80 mm, and the distance between the tip of the divider and the tip wall of the duct was also 80 mm. Various guide vane configurations were used in the turning region. The Reynolds number (Re), based on the hydraulic diameter, was held constant at 10,000. The naphthalene sublimation technique was used to determine the detailed local heat transfer coefficients, using the heat and mass transfer analogy. The results indicated that guide vanes in the turning region enhanced heat transfer in the blade tip region. The guide vane on the second-pass side of the turning region had higher heat transfer than the guide vane on the first-pass side. Strong secondary flow enhanced heat transfer in the blade tip region. Dean vortices induced by the guide vanes pushed the high momentum core flow towards the tip wall, and heat transfer was increased in the turning region, but decreased in the second passage. Consequently, a guide vane on the second-pass side of the turning region generates high heat transfer rates on the tip surface, and can also increase the thermal performance factor in a two-pass duct.

UR - http://www.scopus.com/inward/record.url?scp=84865482475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865482475&partnerID=8YFLogxK

U2 - 10.1115/GT2011-45962

DO - 10.1115/GT2011-45962

M3 - Conference contribution

SN - 9780791854655

VL - 5

SP - 1351

EP - 1362

BT - ASME 2011 Turbo Expo

ER -

Lee DM, Park JS, Lee DH, Kim BS, Cho HH. Heat transfer characteristics of a non-rotating two-pass rectangular duct with various guide vanes in the tip turn region. In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011. PARTS A AND B ed. Vol. 5. 2011. p. 1351-1362 https://doi.org/10.1115/GT2011-45962