JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Flow and Heat/Mass Transfer Characteristics of Arrays of Impingement Jets with Effusion Holes
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Flow and Heat/Mass Transfer Characteristics of Arrays of Impingement Jets with Effusion Holes
Lee, Dong-Ho; Yun, Pil-Hyeon; Jo, Hyeong-Hui;
  PDF(new window)
 Abstract
The present study has been conducted to investigate heat/mass transfer characteristics on a target plate fur arrays of circular impingement jets with and without effusion holes. A naphthalene sublimation method is employed to determine local heat/mass transfer coefficients on the target plate. The effusion holes are located at the center of four injection holes in the injection plate where the spent air is discharged through the effusion hole after impingement on the target plate. For the array jet impingement without effusion holes, the array jets are injected into the crossflow formed by upstream spent air because the impinged jets must flow to the open exit. For small gap distances, heat/mass transfer coefficients without effusion holes are very non-uniform due to crossflow effects and re-entrainments of spent air. However, uniform distributions and enhanced values of heat/mass transfer coefficients are obtained by installing the effusion holes. For large gap distances, the crossflow has little influence on heat/mass transfer characteristics on the target palate due to the large cross-sectional open area between the injection and target plates. Therefore, the distributions and levels of heat/mass transfer coefficients are almost the same for both cases.
 Keywords
Impingement Jet;Effusion Hole;Heat/Mass Transfer;Naphthalene Sublimation Method;
 Language
Korean
 Cited by
1.
원형가이드 설치에 따른 충돌제트/유출냉각에서 열/물질전달 특성,홍성국;조형희;

대한기계학회논문집B, 2006. vol.30. 12, pp.1147-1154 crossref(new window)
 References
1.
Koopman, R. N. and Sparrow, E. M., 1975, 'Local and Average Transfer Coefficients due to an Impinging Row of Jets,' Int. J. Heat Mass Transfer, Vol. 8, pp. 1261 - 1272 crossref(new window)

2.
Martin, H., 1977, 'Heat and Mass Transfer between Impinging Gas Jets and Solid Surfaces.' Advanced Heat and Mass Transfer, Vol. 13, pp. 1-60

3.
Downs, S. J. and James. E. H., 1987. 'Jet Impingement Heat Transfer - A Literature Survey,' ASME Paper No. 87-HT-35

4.
Jambunathan, K., Lai, E., Moss, M. A. and Button, B. L., 1992, 'A Review of Heat Transfer Data for Single Circular Jet Impingement,' Int. J. Heat and Fluid Flow, Vol. 13, pp. 106-115 crossref(new window)

5.
Viskanta, R., 1993, 'Heat Transfer to Impinging Isothermal Gas and Flame Jets,' Exp. Thermal and Fluid Science, Vol. 6, pp. 111-134 crossref(new window)

6.
윤필현, 이동호, 조형희, 2000, '배열충돌제트에서 횡방향 유동 성분에 다른 열/물질 전달 특성 고찰', 대한기계학회논문집 B권, 제24권 제2호, pp. 195-203

7.
Huber, A. M. and Viskanta, R., 1994, 'Effect of Jet-Jet Spacing on Convective Heat Trasnfer to Confined Impinging Arrays of Axisymmetric Air Jets,' Int. J. Heat Mass Transfer, Vol. 37, No. 18, pp. 2859-2869 crossref(new window)

8.
Cho, H. H. and Goldstein, R. J., 1996, 'Effect of Hole Arrangements on Impingement/Effusion Cooling,' Proceeding of 3rd KSME-JSME Thermal Engineering Conference, pp. 71 - 76

9.
Cho, H. H. and Rhee, D. H., 2000, 'Local Heat/Mass Transfer Measurement on the Effusion Plate in Impingement/Effusion Cooling System,' J Turbomachinery, Vol. 123 (Accepted) crossref(new window)

10.
이동호, 조형희, 2000, '연소실 냉각을 위한 충돌제트/유출 냉각 기법에 유출판에서의 열전달 특성,' 대한기계학회 논문집 B, 제24권, 제3호, pp. 435-442

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

12.
Goldstein, R. J. and Cho, H. H., 1995, 'A Review of Mass Transfer Measurement Using Naphthalene Sublimation,' Exp. Thermal and Fluid Science, Vol. 10, pp. 416-434 crossref(new window)

13.
Eckert, E. R. G., 1976, Analogies to Heat Transfer Processes, in Measurements in Heat Transfer, ed. Eckert, E. R. G. and Goldstein, R. J., pp. 397-423, Hemisphere Pub., New York

14.
Kline, S. J. and McClinetock, F., 1953, 'Describing Uncertainty in Single Sample Experiments,' Mech. Eng., Vol. 75, pp.3-8