Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel

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

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

2 Citations (Scopus)

Abstract

This study investigated convective heat transfer inside a rotating two-pass rectangular channel with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The channel had a hydraulic diameter of 26.67 mm and an aspect ratio of 5, and various guide vane configurations were used in the turning region. The Reynolds number, based on the hydraulic diameter, was held constant at 10,000 while the rotation number was 0.1. The detailed local heat transfer coefficients were determined through naphthalene sublimation using the heat and mass transfer analogy. The heat transfer was high on the trailing surface in the first-pass section and on the leading surface in the secondpass section. The heat transfer on leading and trailing surfaces increased in the rotating channel, but the heat transfer on the tip surface decreased. The peak heat transfer on the tip surface appeared in the middle of the first-pass corner due to the centrifugal force.

Original languageEnglish
Title of host publicationASME Turbo Expo 2012
Subtitle of host publicationTurbine Technical Conference and Exposition, GT 2012
Pages589-599
Number of pages11
Volume4
EditionPARTS A AND B
DOIs
Publication statusPublished - 2012 Dec 1
EventASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012 - Copenhagen, Denmark
Duration: 2012 Jun 112012 Jun 15

Other

OtherASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012
CountryDenmark
CityCopenhagen
Period12/6/1112/6/15

Fingerprint

Mass transfer
Heat transfer
Hydraulics
Sublimation
Naphthalene
Heat transfer coefficients
Hot Temperature
Aspect ratio
Reynolds number
Cooling

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Park, J. S., Lee, D. M., Lee, D. H., Lee, S., Kim, B. S., & Cho, H. H. (2012). Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel. In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012 (PARTS A AND B ed., Vol. 4, pp. 589-599) https://doi.org/10.1115/GT2012-69521
Park, Jun Su ; Lee, Dong Myeong ; Lee, Dong Hyun ; Lee, Sanghoon ; Kim, Beom Soo ; Cho, Hyung Hee. / Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel. ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012. Vol. 4 PARTS A AND B. ed. 2012. pp. 589-599
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Park, JS, Lee, DM, Lee, DH, Lee, S, Kim, BS & Cho, HH 2012, Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel. in ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012. PARTS A AND B edn, vol. 4, pp. 589-599, ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012, Copenhagen, Denmark, 12/6/11. https://doi.org/10.1115/GT2012-69521

Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel. / Park, Jun Su; Lee, Dong Myeong; Lee, Dong Hyun; Lee, Sanghoon; Kim, Beom Soo; Cho, Hyung Hee.

ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012. Vol. 4 PARTS A AND B. ed. 2012. p. 589-599.

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

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AB - This study investigated convective heat transfer inside a rotating two-pass rectangular channel with guide vanes in the turning region. The objective was to determine the effect of the guide vanes on blade tip cooling. The channel had a hydraulic diameter of 26.67 mm and an aspect ratio of 5, and various guide vane configurations were used in the turning region. The Reynolds number, based on the hydraulic diameter, was held constant at 10,000 while the rotation number was 0.1. The detailed local heat transfer coefficients were determined through naphthalene sublimation using the heat and mass transfer analogy. The heat transfer was high on the trailing surface in the first-pass section and on the leading surface in the secondpass section. The heat transfer on leading and trailing surfaces increased in the rotating channel, but the heat transfer on the tip surface decreased. The peak heat transfer on the tip surface appeared in the middle of the first-pass corner due to the centrifugal force.

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Park JS, Lee DM, Lee DH, Lee S, Kim BS, Cho HH. Effect of guide vanes in the tip turn region on heat/mass transfer of rotating two-pass channel. In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012. PARTS A AND B ed. Vol. 4. 2012. p. 589-599 https://doi.org/10.1115/GT2012-69521