JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Measurements of Endwall Heat(Mass) Transfer Coefficient in a Linear Turbine Cascade Using Naphthalene Sublimation Technique
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Measurements of Endwall Heat(Mass) Transfer Coefficient in a Linear Turbine Cascade Using Naphthalene Sublimation Technique
Lee, Sang-U; Jeon, Sang-Bae; Park, Byeong-Gyu;
  PDF(new window)
 Abstract
Heat (mass) transfer characteristics have been investigated on the endwall of a large-scale linear turbine cascade. Its profile is based on the mid-span of the first-stage rotor blade in a industrial gas turbine. By using the naphthalene sublimation technique, local heat (mass) transfer coefficients are measured for two different free-stream turbulence intensities of 1.3% and 4.7%. The results show that local heat (mass) transfer Stanton number is widely varied on the endwall, and its distribution depends strongly on the three-dimensional vortical flows such as horseshoe vortices, passage vortex, and corner vortices. From this experiment, severe heat loads are found on the endwall near the blade suction side as well as near the leading and trailing edges of the blade. In addition, the effect of the free-stream turbulence on the heat (mass) transfer is also discussed in detail.
 Keywords
Linear Turbine Cascade;Endwall;Naphthalene Sublimation Technique;Turbulent Intensity;Heat;Transfer Coefficient;
 Language
Korean
 Cited by
1.
큰 회전각을 가지는 터빈 블레이드 표면에서 나프탈렌승화법을 이용한 열(물질)전달계수 측정,권현구;이상우;박병규;

대한기계학회논문집B, 2002. vol.26. 8, pp.1077-1087 crossref(new window)
2.
회전각이 큰 터빈 동익 누설유동 영역에서의 열(물질)전달 특성,이상우;권현구;

대한기계학회논문집B, 2004. vol.28. 5, pp.535-544 crossref(new window)
3.
입사각이 터빈 동익의 후류 난류유동에 미치는 영향,장성일;이상우;

대한기계학회논문집B, 2005. vol.29. 8, pp.887-894 crossref(new window)
 References
1.
Wang, H.P., Olson, S.J., Goldstein, R.J. and Eckert, E.R.G., 1997, 'Flow Visualization in a Linear Turbine Cascade of High Performance Turbine Blade,' ASME Journal of Turbomachinery, Vol. 119, pp. 1-8

2.
Blair, M.F., 1974, 'An Experimental Study of Heat Transfer and Film Cooling on Large-Scale Turbine Endwalls,' ASME Journal of Heat Transfer, Vol. 96, pp. 524-529

3.
Graziani, R.A., Blair, M.F., Taylor, J.R. and Mayle, R.E., 1980, 'An Experimental Study of Endwall and Airfoil Surface Heat Transfer in a Large Scale Turbine Blade Cascade,' ASME Journal of Engineering for Gas Turbine and Power, Vol. 102, pp. 257-267

4.
York, R.E., Hylton, L.D. and Mihelc, M.S., 1984, 'An Experimental Investigation of Endwall Heat Transfer and Aerodynamics in a Linear Vane Cascade,' ASME Journal of Engineering for Gas Turbine and Power, Vol. 106, pp. 159-167

5.
Gaugler, R.E., and Russell, L.M., 1984, 'Comparison of Visualized Turbine Endwall Secondary Flows and Measured Heat Transfer Pattern,' ASME Journal of Engineering for Gas Turbine and Power, Vol. 106, pp. 168-172

6.
Goldstein, R.J. and Spores, R.A., 1988, 'Turbulent Transport on the Endwall in the Region Between Adjacent Turbine Blades,' ASME Journal of Heat Transfer, Vol. 110, pp. 862-869

7.
이상우, 신세현, 이택식, 이준식, 1988, '막냉각되는 평판에서의 열전달특성에 관한 실험적 연구 - 분사각도와 분사율의 영향 -,' 대한기계학회논문집, 제12권, pp. 1415-1427

8.
이준식, 이택식, 이상우, 1991, '막냉각되는 원봉 표면에서의 물질전달에 관한 실험적 연구,' 대한기계학회논문집, 제15권, pp. 1756-1762

9.
권혁진, 우성제, 조형희, 2000, '사각덕트 내부 열전달 향상을 위한 요철의 단락 효과,' 대한기계학회논문집(B), 제24권, pp. 744-752

10.
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 crossref(new window)

11.
Ambrose, D., Lawrenson, I.J. and Sprake, C.H.S., 1975, 'The Vapour Pressure of Naphthalene,' J. Chem. Thermodynamics, Vol. 7, pp. 1173-1176

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

13.
차봉준, 이상우, 현용익, 이대성, 1993, '선형터빈 케스케이드 통로에서의 3차원 유동특성,' 대한기계학회논문집, 제17권, pp. 3148-3165