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http://dx.doi.org/10.3795/KSME-B.2004.28.5.535

Heat(Mass) Transfer Characteristics in the Tip-Leakage Flow Region of a High-Turning Turbine Rotor Blade  

Lee, Sang-Woo (한국철도기술연구원)
Kwon, Hyun-Goo (금오공과대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.5, 2004 , pp. 535-544 More about this Journal
Abstract
The heat (mass) transfer characteristics in the tip-leakage flow region of a high-turning first-stage turbine rotor blade has been investigated by employing the naphthalene sublimation technique. The heat transfer data in the tip-leakage flow area for the tip clearance-to-span ratio, h/s, of 2.0% are compared with those in endwall three-dimensional flow region without tip clearance (h/s : 0.0 %). The result shows that the thermal load in the tip-leakage flow region for h/s = 2.0% is more severe than that in the endwall flow region for h/s : 0.0%. The thermal loads even at the leading and trailing edges for h/s = 2.0% are found larger than those for h/s = 0.0%. The tip-leakage flow results in heat transfer augmentations near the tip on both pressure and suction sides in comparison with the mid-span results.
Keywords
Tip-Leakage Flow; Tip Clearance; High-fuming Turbine Rotor Blade; Heat (Mass) Transfer Coefficient;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Mayle, R. E. and Metzger, D. E., 1982, 'Heat Transfer at the Tip of an Unshrouded Turbine Blade,' Proceedings of 7th International Heat Transfer Conference, Vol. 3, pp. 87-92
2 Chyu, M. K., Moon, H. K. and Metzger, D. E., 1989, 'Heat Transfer in the Tip Region of Grooved Turbine Blades,' ASME Journal of Turbomachinery, Vol. 111, pp. 131-138   DOI
3 Metzger, D. E., Dunn, M. G. and Hah, C., 1992, 'Turbine Tip and Shroud Heat Transfer,' ASME Journal of Turbomachinery, Vol. 113, pp. 502-507   DOI
4 Metzger, D. E. and Rued, K., 1989, 'The influence of Turbine Clearance Gap Leakage on Passage Velocity and Heat Transfer Near Blade Tips, Part I - Sink Flow Effects on Blade Pressure sides,' ASME Journal of Turbomachinery, Vol. 111, pp. 284-292   DOI
5 Rued, K. and Metzger, D. E., 1989, 'The influence of Turbine Clearance Gap Leakge on Passage Velocity and Heat Transfer Near Blade Tips, Part II-Source Flow Effects on Blade Suction sides,' ASME Journal of Turbomachinery, Vol. 111, pp. 293-300   DOI
6 Jin, P. and Goldstein, R. J., 2002, 'Local Mass/Heat Transfer on Turbine Blade Near-Tip Sur faces,' ASME Paper No. GT-2002-30556
7 Goldstein, R. J. and Cho, H. H., 1995, 'A Review of Mass Transfer Measurements Using Naphthalene Sublimation,' Experimental Thermal and Fluid Science, Vol. 10, pp. 416-434   DOI   ScienceOn
8 Ambrose, D., Lawrenson, I. J. and Sprake, C. H. S., 1975, 'The Vapour Pressure of Naphthlene,' J. Chem. Thermodynamics, Vol. 7, pp. 1173-1176   DOI
9 Lee, S. W., Jun, S. B. and Park, B. K., 2001, 'Measurements of Endwall Heat Transfer Coefficient in a Linear Turbine Cascade,' Transactions of KSME (B), Vol. 25, pp. 356-365   과학기술학회마을
10 Jun, S. B., 2000, Endwall Heat Transfer Coefficient in a Linear Cascade, MS Thesis, KIT
11 Kwon, H. G., Lee, S. W. and Park, B. K., 2002, 'Measurements of Heat (Mass) Transfer Coefficient on the Surface of a Turbine Blade With a High Truning Angle,' Transactions of KSME (B), Vol. 26, pp. 1077-1087   과학기술학회마을   DOI
12 Abernethy, R. B., Benedict, R. P. and Dowdell, R. B., 1985, 'ASME Measurement Uncertainty,' ASME Journal of Fluids Engineering, Vol. 107, pp. 161-164   DOI
13 Bindon, J. P., 1989, 'The Measurement and Formation of Tip Clearance Loss,' ASME Journal of Turbomachinery, Vol. 111, pp. 257-263   DOI