Measurement of heat transfer on turbine blade endwall with upstream wakes at different relative positions

Sehjin Park, Ho Seong Sohn, Hyung Hee Cho, Yang Seok Han, Osamu Ueda

Research output: Contribution to journalConference article

Abstract

The cooling system design based on heat transfer analysis of turbine hot components, such as vanes and blades, is necessary to protect hot components operated under high temperature conditions. Especially, in turbine blade endwall, various vortices such as horseshoe vortex, passage vortex, corner vortex, etc. are generated and complex flow characteristics appear. In addition, the wakes generated from vane trailing edge affect endwall periodically due to the rotation of blade. The complex heat transfer characteristics are exhibited on the endwall due to the effects of vortices and wakes, and accurate heat transfer measurement of endwall is required. Therefore, in this study, experiments were conducted to investigate the effect of wake on endwall heat transfer. The naphthalene sublimation method was used to measure the heat/mass transfer on endwall. This study measured and compared the heat/mass transfer distributions affected by wakes generated at different relative positions. The wake from the front of the blade leading edge had a low effect on the passage vortex, but the wake between the blade and the blade interrupted the passage vortex. As a result, high heat/mass transfer distribution caused by the passage vortex was broken and the heat/mass transfer was decreased due to the wake.

Original languageEnglish
Pages (from-to)3789-3794
Number of pages6
JournalInternational Heat Transfer Conference
Volume2018-August
Publication statusPublished - 2018 Jan 1
Event16th International Heat Transfer Conference, IHTC 2018 - Beijing, China
Duration: 2018 Aug 102018 Aug 15

Fingerprint

turbine blades
wakes
upstream
Turbomachine blades
Vortex flow
Turbines
heat transfer
blades
vortices
Heat transfer
mass transfer
Mass transfer
heat
vanes
horseshoe vortices
trailing edges
cooling systems
flow characteristics
turbines
leading edges

All Science Journal Classification (ASJC) codes

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

Cite this

Park, Sehjin ; Sohn, Ho Seong ; Cho, Hyung Hee ; Han, Yang Seok ; Ueda, Osamu. / Measurement of heat transfer on turbine blade endwall with upstream wakes at different relative positions. In: International Heat Transfer Conference. 2018 ; Vol. 2018-August. pp. 3789-3794.
@article{1d441fed93034b2bb2564732ddde6aa6,
title = "Measurement of heat transfer on turbine blade endwall with upstream wakes at different relative positions",
abstract = "The cooling system design based on heat transfer analysis of turbine hot components, such as vanes and blades, is necessary to protect hot components operated under high temperature conditions. Especially, in turbine blade endwall, various vortices such as horseshoe vortex, passage vortex, corner vortex, etc. are generated and complex flow characteristics appear. In addition, the wakes generated from vane trailing edge affect endwall periodically due to the rotation of blade. The complex heat transfer characteristics are exhibited on the endwall due to the effects of vortices and wakes, and accurate heat transfer measurement of endwall is required. Therefore, in this study, experiments were conducted to investigate the effect of wake on endwall heat transfer. The naphthalene sublimation method was used to measure the heat/mass transfer on endwall. This study measured and compared the heat/mass transfer distributions affected by wakes generated at different relative positions. The wake from the front of the blade leading edge had a low effect on the passage vortex, but the wake between the blade and the blade interrupted the passage vortex. As a result, high heat/mass transfer distribution caused by the passage vortex was broken and the heat/mass transfer was decreased due to the wake.",
author = "Sehjin Park and Sohn, {Ho Seong} and Cho, {Hyung Hee} and Han, {Yang Seok} and Osamu Ueda",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "2018-August",
pages = "3789--3794",
journal = "International Heat Transfer Conference",
issn = "2377-424X",

}

Measurement of heat transfer on turbine blade endwall with upstream wakes at different relative positions. / Park, Sehjin; Sohn, Ho Seong; Cho, Hyung Hee; Han, Yang Seok; Ueda, Osamu.

In: International Heat Transfer Conference, Vol. 2018-August, 01.01.2018, p. 3789-3794.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Measurement of heat transfer on turbine blade endwall with upstream wakes at different relative positions

AU - Park, Sehjin

AU - Sohn, Ho Seong

AU - Cho, Hyung Hee

AU - Han, Yang Seok

AU - Ueda, Osamu

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The cooling system design based on heat transfer analysis of turbine hot components, such as vanes and blades, is necessary to protect hot components operated under high temperature conditions. Especially, in turbine blade endwall, various vortices such as horseshoe vortex, passage vortex, corner vortex, etc. are generated and complex flow characteristics appear. In addition, the wakes generated from vane trailing edge affect endwall periodically due to the rotation of blade. The complex heat transfer characteristics are exhibited on the endwall due to the effects of vortices and wakes, and accurate heat transfer measurement of endwall is required. Therefore, in this study, experiments were conducted to investigate the effect of wake on endwall heat transfer. The naphthalene sublimation method was used to measure the heat/mass transfer on endwall. This study measured and compared the heat/mass transfer distributions affected by wakes generated at different relative positions. The wake from the front of the blade leading edge had a low effect on the passage vortex, but the wake between the blade and the blade interrupted the passage vortex. As a result, high heat/mass transfer distribution caused by the passage vortex was broken and the heat/mass transfer was decreased due to the wake.

AB - The cooling system design based on heat transfer analysis of turbine hot components, such as vanes and blades, is necessary to protect hot components operated under high temperature conditions. Especially, in turbine blade endwall, various vortices such as horseshoe vortex, passage vortex, corner vortex, etc. are generated and complex flow characteristics appear. In addition, the wakes generated from vane trailing edge affect endwall periodically due to the rotation of blade. The complex heat transfer characteristics are exhibited on the endwall due to the effects of vortices and wakes, and accurate heat transfer measurement of endwall is required. Therefore, in this study, experiments were conducted to investigate the effect of wake on endwall heat transfer. The naphthalene sublimation method was used to measure the heat/mass transfer on endwall. This study measured and compared the heat/mass transfer distributions affected by wakes generated at different relative positions. The wake from the front of the blade leading edge had a low effect on the passage vortex, but the wake between the blade and the blade interrupted the passage vortex. As a result, high heat/mass transfer distribution caused by the passage vortex was broken and the heat/mass transfer was decreased due to the wake.

UR - http://www.scopus.com/inward/record.url?scp=85068329383&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068329383&partnerID=8YFLogxK

M3 - Conference article

VL - 2018-August

SP - 3789

EP - 3794

JO - International Heat Transfer Conference

JF - International Heat Transfer Conference

SN - 2377-424X

ER -