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http://dx.doi.org/10.3795/KSME-B.2004.28.3.304

The Effects of Staggered Rows of Rectangular Shaped Holes on Film Cooling  

Kim, Young-Bong (연세대학교 대학원 기계공학과)
Rhee, Dong-Ho (연세대학교 대학원 기계공학과)
Lee, Youn-Seok (LG전자 DA연구소)
Cho, Hyung-Hee (연세대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.3, 2004 , pp. 304-314 More about this Journal
Abstract
An experimental study has been conducted to measure the temperature fields and the local film cooling effectiveness for two and three staggered rows of the rectangular shaped-holes with various blowing rates. The hydraulic diameter of rectangular-shaped hole is 10mm. To compare with the film cooling performance of rectangular-shaped hole, two kinds of circular holes are tested. One has the same hydraulic diameter as the rectangular hole and the other has the same cross sectional area. Also, rectangular holes with expanded exit with same inlet area as rectangular ones are tested. Temperature fields are measured using a thermocouple rake attached on three-axis traversing system. Adiabatic film cooling effectiveness on the surface are obtained based on experimental results of thermochromic liquid crystals. The film cooling effectiveness is measured for various blowing rates and compared with the results for the cylindrical holes. In case of 2 rows, the rectangular holes has better performance than circular holes due to its slot-like geometry. In case of 3 rows, the effecta of hole shape is not clear.
Keywords
Film Cooling; Rectangular-Shaped Hole; Staggered Array; Heat Transfer; TLC Technique;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 B. Y. Maiteh and B. A. Jubran, 1999, 'Influence of Mainstream Flow History on Film Cooling and Heat Transfer From Two Rows of Simple and Compound Angle Holes in Combination,' International Journal of Heat and Fluid Flow, Vol. 20, pp. 153-165   DOI   ScienceOn
2 Kline, S. J. and McClintock, F. A., 1953, 'Describing Uncertainties in Single Sample Experiments,' Mechanical Engineering, Vol. 75, pp. 3-8
3 Leylek, J. H. and Zerkle, R. D., 'Discrete-Jet Film Cooling: A Comparison of Computational Results with Experiments,' ASME, J. of Turbomachinery, Vol. 116, pp. 358-368
4 Lee, S. W., Lee, J. S. and Ro, S. T., 1994, 'Experimental Study on the Flow Characteristics of Streamwise Inclined Jets in Crossflow on Flat Plate,' J. of Turbomachinery, Vol. 116, pp. 97-105   DOI
5 Bunker, R. S., 2000, 'Effect of Partial Coating Biockage on Film Cooling Effectiveness,' ASME Paper No. 2000-GT-0244
6 Goldstein, R. J., 1971, 'Film Cooling, in Advances in Heat Transfer,' Academic Press, Vol. 7, pp. 321-379
7 Goldstein, R. J., Eckert, E. R. G. and Burggraf, F., 1974, 'Effect of Hole Geometry and Density on Three-Dimensional Film Cooling,' Int. J. Heat Mass Transfer, Vol. 17, pp. 595-607   DOI   ScienceOn
8 Gritsch, M., Schulz, A. and Wittig, S.,1998, 'Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes With Expanded Exits,' J. of Turbomachinery, Vol. 120, pp. 549-556   DOI
9 Kohli, A. and Bogard, D. G., 1999, 'Effect of Hole Shape on Film Cooling with Large Angle Injection,' ASME Paper No. 99-GT-165
10 Cho, H. H., Rhee, D. H. and Kim, B. G., 'Enhancement of Film Cooling Preformance Using A Shaped Film Cooling Hole With Compound Angle Injection,' JSME International Journal, Series B, Vol. 44, No. 1, pp. 99-110   DOI   ScienceOn
11 Muldoon, F. and Acharya, S., 1999, 'Numerical Investigation of the Dynamical Behavior of a Row of Square Jets in Crossflow over a Surface,' ASME Paper No. 99-GT-127
12 Licu, D. N., Findlay, M. J., Gartshore, I. S. and Salcudean, M., 1999, 'Measurements of Heat Transfer Characteristics for Film Cooling Applications,' ASME Paper No. 99-GT-167
13 Kruse, H., 1974, 'Film Cooling Measurements,' DEVLR Report No. 352-74/9
14 Sargison, J. E., Guo, S. M., Oldfield, M. L .G., Lock, G. D. and Rawlinson, A. J., 2001, 'A Converging Slot-hole Film-cooling Geometry Part I: Low-speed Flat-plate Heat Transfer and Loss,' ASME Paper No. 2001-GT-0126
15 Watanabe, K., Matsuura, M. Suenaga, K. and Takeishi, K., 1999, 'An Experimental Study on the Film Cooling Effectiveness with Expanded Hole Geometry,' Proceed. of 7th IGTC, 2, pp. 615-622
16 Rhee, D. H., Lee, Y. S. and Cho, H. H., 2002, 'Film Cooling Effectiveness and Heat Transfer of Rectangular-Shaped Film Cooling Holes,' ASME Paper No. 2002-GT-30168
17 Takahashi, H., Nuntadusit, C., Kimoto, H., Ishida, H., Ukai, T. and Takeishi, K., 2000, 'Characteristics of Various Film Cooling Jets Injected in a Conduit,' Proceedings of Turbine 2000 International Symposium on Heat Transfer in Gas Turbine Systems, pp. 76-78
18 Ligrani, P. M., S. Ciriello, D. T. Bishop, 1992, 'Heat Transfer, Adiabatic Effectiveness, and Injectant Distributions Downstream of a Single Row and Two Staggered Rows of Compound Angle Film Cooling Holes,' J. of Turbomachinery, Vol. 114, pp. 687-700   DOI
19 Sargison, J. E., Guo, S. M., Oldfield, M. L. G., Lock, G. D. and Rawlinson,A. J., 2002, 'Flow Visualisation of a Converging Slot-Hole Film-Cooling Geometry,' ASME Paper No. GT-2002-30177
20 Le Brocq, P. V., Launder, B. E., and Priddin, C. H., 1973, 'Discrete Hole Injection as a Means of Transpiration Cooling, An Experimental Study,' Proc, Inst. Mech. E., Vol. 187, pp. 149-157   DOI