Detailed heat/mass transfer measurements on stationary blade with various relative positions

Dong Ho Rhee, Hyung Hee Cho

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

Abstract

The present study investigated the effect of relative position of the blade on turbine blade and shroud heat transfer. The experiments were conducted in a low speed wind tunnel with stationary annular turbine cascade and the test section has a single turbine stage. The chord length of the blade is 150 mm and the mean tip clearance of the blade is about 2.5% of the blade chord. The Reynolds number based on blade inlet velocity and chord length is 1.5×10 5 and mean turbulence intensity is about 3%. To investigate the effect of relative position of blade, the detailed heat/mass transfer measurements were performed for the stationary blade at four different positions in a single pitch. A naphthalene sublimation technique was used to obtain detailed heat/mass transfer coefficients on the blade and shroud. The results show that the blade relative position changes the distributions of velocity magnitude and turbulence intensity and consequently affects heat transfer characteristics. Especially, the heat transfer pattern near the tip on the suction side surface varies significantly because the behavior of tip leakage flow changes.

Original languageEnglish
Title of host publicationProceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
Pages151-160
Number of pages10
Volume1
Publication statusPublished - 2006 Dec 1
Event11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 - Honolulu, HI, United States
Duration: 2006 Feb 262006 Mar 2

Other

Other11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
CountryUnited States
CityHonolulu, HI
Period06/2/2606/3/2

Fingerprint

Turbomachine blades
Turbines
Mass transfer
Heat transfer
Turbulence
Cascades (fluid mechanics)
Sublimation
Naphthalene
Wind tunnels
Reynolds number
Hot Temperature
Experiments

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Rhee, D. H., & Cho, H. H. (2006). Detailed heat/mass transfer measurements on stationary blade with various relative positions. In Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11 (Vol. 1, pp. 151-160)
Rhee, Dong Ho ; Cho, Hyung Hee. / Detailed heat/mass transfer measurements on stationary blade with various relative positions. Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11. Vol. 1 2006. pp. 151-160
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abstract = "The present study investigated the effect of relative position of the blade on turbine blade and shroud heat transfer. The experiments were conducted in a low speed wind tunnel with stationary annular turbine cascade and the test section has a single turbine stage. The chord length of the blade is 150 mm and the mean tip clearance of the blade is about 2.5{\%} of the blade chord. The Reynolds number based on blade inlet velocity and chord length is 1.5×10 5 and mean turbulence intensity is about 3{\%}. To investigate the effect of relative position of blade, the detailed heat/mass transfer measurements were performed for the stationary blade at four different positions in a single pitch. A naphthalene sublimation technique was used to obtain detailed heat/mass transfer coefficients on the blade and shroud. The results show that the blade relative position changes the distributions of velocity magnitude and turbulence intensity and consequently affects heat transfer characteristics. Especially, the heat transfer pattern near the tip on the suction side surface varies significantly because the behavior of tip leakage flow changes.",
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Rhee, DH & Cho, HH 2006, Detailed heat/mass transfer measurements on stationary blade with various relative positions. in Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11. vol. 1, pp. 151-160, 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11, Honolulu, HI, United States, 06/2/26.

Detailed heat/mass transfer measurements on stationary blade with various relative positions. / Rhee, Dong Ho; Cho, Hyung Hee.

Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11. Vol. 1 2006. p. 151-160.

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

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N2 - The present study investigated the effect of relative position of the blade on turbine blade and shroud heat transfer. The experiments were conducted in a low speed wind tunnel with stationary annular turbine cascade and the test section has a single turbine stage. The chord length of the blade is 150 mm and the mean tip clearance of the blade is about 2.5% of the blade chord. The Reynolds number based on blade inlet velocity and chord length is 1.5×10 5 and mean turbulence intensity is about 3%. To investigate the effect of relative position of blade, the detailed heat/mass transfer measurements were performed for the stationary blade at four different positions in a single pitch. A naphthalene sublimation technique was used to obtain detailed heat/mass transfer coefficients on the blade and shroud. The results show that the blade relative position changes the distributions of velocity magnitude and turbulence intensity and consequently affects heat transfer characteristics. Especially, the heat transfer pattern near the tip on the suction side surface varies significantly because the behavior of tip leakage flow changes.

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Rhee DH, Cho HH. Detailed heat/mass transfer measurements on stationary blade with various relative positions. In Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11. Vol. 1. 2006. p. 151-160