冠齿喷嘴射流冲击平直靶面对流换热实验

doi:10.7527/S1000-6893.2017.21694

Abstract

Abstract: An experimental investigation of chevron nozzle jet impingement heat transfer on a flat surface was performed by using the infrared camera. The tests were conducted with typical Reynolds numbers ranging from 5 000 to 20 000 and dimensionless nozzle-to-surface distances ranging from 1 to 8. A comparison with the round nozzle jet was made, and the geometric effects of the chevron nozzle were analyzed. The results show that the chevron nozzle plays a significant role in improving jet impingement heat transfer. At small impinging distances, the distribution of local convective heat transfer produced by the chevron-jet shows an obvious lobe-shaped feature in the vicinity of the impinging stagnation point. When the dimensionless nozzle-to-surface distance is beyond 4, distribution of local convective heat transfer produced by the chevron-jet is similar to that by the round jet. The averaged Nusselt number of the chevron nozzle jet area of either 2 or 4 times of the nozzle diameter for average achieves 15%-30% increase compared to that of the round nozzle jet, and the increase depends on the jet Reynolds number and dimensionless nozzle-to-surface distance. For the current geometric parameters of the chevron nozzle, it is found that the 6-chevron nozzle with a chevron length-to-nozzle diameter of 0.6 can produce more favorable heat transfer enhancement.

Key words: jet impingement, chevron nozzle, flat targeting surface, convective heat transfer, round nozzle

CLC Number:

V235.1

LYU Yuanwei, ZHANG Jingzhou, WANG Boyan, TAN Xiaoming. Experimental of chevron nozzle jet impingement heat transfer on flat targeting surface[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(3): 121694-121694.

References

[1] VISKANTA R. Heat transfer to impinging isothermal gas and flame jets[J]. Experimental Thermal and Fluid Science, 1993, 6(2):111-134.
[2] BUNKER R S. Gas turbine heat transfer:Ten remaining hot gas path challenges[J]. ASME Journal of Turbomachinery, 2007, 129:193-210.
[3] FREGEAU M, GABR M, PARASCHIVOIU I, et al. Simulation of heat transfer from hot-air jets impinging a three-dimensional concave surface[J]. Journal of Aircraft, 2009, 46:721-725.
[4] WEIGAND B, SPRING S. Multiple jet impingement-A review[J]. Heat Transfer Research, 2011, 42:101-142.
[5] CARLOMAGNO G M, IANIRO A. Thermo-fluid-dynamics of submerged jets impinging at short nozzle-to-plate distance:A review[J]. Experimental Thermal and Fluid Science, 2014, 58:15-35.
[6] COLUCCI D W, VISKANTA R. Effect of nozzle geometry on local convective heat transfer to a confined impinging air jet[J]. Experimental Thermal and Fluid Science, 1996, 13:71-80.
[7] BRIGNONI L A, GARIMELLA S V. Effects of nozzle-inlet chamfering on pressure drop and heat transfer in confined air jet impingement[J]. International Journal of Heat and Mass Transfer, 2000, 43:1133-1139.
[8] LEE J H, LEE S J. The effect of nozzle configuration on stagnation region heat transfer enhancement of axisymmetric jet impingement[J]. International Journal of Heat and Mass Transfer, 2000, 43:3497-3509.
[9] GAO N, SUN H, EWING D. Heat transfer to impinging round jets with triangular tabs[J]. International Journal of Heat and Mass Transfer, 2003, 46:2557-2569.
[10] YU Y Z, ZHANG J Z, XU H S. Convective heat transfer by a row of confined air jets from round holes equipped with triangular tabs[J]. International Journal of Heat and Mass Transfer, 2014, 72:222-233.
[11] YU Y Z, ZHANG J Z, SHAN Y. Convective heat transfer of a row of air jets impingement excited by triangular tabs in a confined crossflow channel[J]. International Journal of Heat and Mass Transfer, 2015, 80:126-138.
[12] ZAMAN K B M Q, BRIDGES J E, HUFF D L. Evolution from ‘tabs’ to ‘chevron technology’-A review[J]. International Journal of Aeroacoustics, 2011, 10:685-710.
[13] KONG F S, JIN Y Z, SETOGUCHI T. Numerical analysis of chevron nozzle effects on performance of the supersonic ejector-diffuser system[J]. Journal of Thermal Science, 2013, 22:459-466.
[14] 单勇, 张靖周, 邵万仁, 等. 冠状喷口抑制涡扇发动机喷流噪声试验和数值研究[J]. 航空学报, 2013, 34(5):1046-1056. SHAN Y, ZHANG J Z, SHAO W R. Experimental and numerical research on jet noise suppression with chevron nozzle for turbine engines[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(5):1046-1056(in Chinese).
[15] VIOLATO D, SCARANO F. Three-dimensional evolution of flow structures in transitional circular and chevron jets[J]. Physics of Fluids, 2011, 23(12):124104.
[16] VIOLATO D, IANIRO A, CARDONE G, et al. Three-dimensional vortex dynamics and convective heat transfer in circular and chevron impinging jets[J]. International Journal of Heat and Fluid Flow, 2012, 37:22-36.
[17] GUAN T, ZHANG J, SHAN Y, et al. Conjugate heat transfer on leading edge of a conical wall subjected to external cold flow and internal hot jet impingement from chevron nozzle-Part 1:Experimental analysis[J]. International Journal of Heat and Mass Transfer, 2017, 106:329-338.
[18] GUAN T, ZHANG J, SHAN Y. Conjugate heat transfer on leading edge of a conical wall subjected to external cold flow and internal hot jet impingement from chevron nozzle-Part 2:Numerical analysis[J]. International Journal of Heat and Mass Transfer, 2017, 106:339-355.
[19] VINZE R, CHANDEL S, LIMAYE M D, et al. Local heat transfer distribution between smooth flat surface and impinging incompressible air jet from a chevron nozzle[J]. Experimental Thermal and Fluid Science, 2016, 78:124-136.
[20] 李鑫郡, 张靖周, 谭晓茗. 单个压电风扇传热特性研究[J]. 航空学报, 2017, 38(7):205-214. LI X J, ZHANG J Z, TAN X M. Characteristics of heat transfer with a single piezoelectric fan[J]. Acta Aeronautica et Astronautica Sinica, 2017, 38(7):205-214(in Chinese).

Experimental of chevron nozzle jet impingement heat transfer on flat targeting surface

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Mei ZHENG, Lijuan FENG, Na QIN, Jinge YIN. 3D computational method for conjugate heat transfer between internal and external flow of nacelle anti-icing system [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(1): 627425-627425.
[2]	QIN Chen, ZHANG Rongping, ZHANG Junlong, YUE Tingrui, WU Songling. Acoustic performance of an under-expanded supersonic jet with different impinging distances to an inclined plate [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(8): 125857-125857.
[3]	LYU Yuanwei, ZHANG Jingzhou, SHAN Yong, SUN Wenjing. Convective heat transfer of chevron-nozzle jet impingement on semi-circular surfaces [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(7): 124762-124762.
[4]	LYU Yuanwei, ZHANG Jingzhou, TANG Chan, SHAN Yong. Experiment of convective heat transfer of pulsed jet impingement on a flat surface [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(4): 121695-121695.
[5]	ZHANG Yingzhe, NI Daming, Incheol LEE, LIN Dakai, YANG Zhigang. Test on hot jet noise of scaled engine nozzle [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(12): 122446-122446.
[6]	SUN Dan, LU Jiang, LIU Yongquan, ZHAN Peng, XIN Qi. Investigation on windage heating characteristics of labyrinth seals [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(11): 122348-122357.
[7]	LI Xinjun, ZHANG Jingzhou, TAN Xiaoming. Characteristics of heat transfer with dual piezoelectric fans in presence of cross flow [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(1): 121424-121424.
[8]	LI Xinjun, ZHANG Jingzhou, TAN Xiaoming. Characteristics of heat transfer with single piezoelectric fan [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(7): 120982-120982.
[9]	SHAN Yong, ZHANG Jingzhou, SHAO Wanren, WU Fei. Experimental and Numerical Research on Jet Noise Suppression with Chevron Nozzle for Turbofan Engines [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(5): 1046-1056.
[10]	WANG Liang, LIN Guiping, WANG Tao, WANG Huidan. Convective Heat Transfer Characteristic of Latent Functionally Thermal Fluid in a Flat Tube [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(11): 2124-2130.
[11]	Hua Yixin;Wang Yazhou;Meng Hua. Numerical Study on Turbulent Convective Heat Transfer with n-heptane Under Supercritical Pressures [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2010, 31(7): 1324-1330.
[12]	Yang Tonghai;Zhu Huiren;Zhang Li;Xu Duchun. Local Heat Transfer Measurements in Narrow Impingement Channel by Transient Liquid Crystal Technique [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2009, 30(11): 2031-2036.
[13]	LIU Chuan-kai;TAO Zhi;DING Shui-ting;XU Guo-qiang;DENG Hong-wu. Local Heat Transfer in a Rotating Smooth and Ribbed U-shaped Channels [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2006, 27(5): 751-755.
[14]	ZHANG Jing-zhou;LI Yong-kang;TAN Xiao-ming;LI Li-guo. Numerical Computation and Experimental Investigation on Local Convective Heat Transfer Characteristics for Jet Array Impingement [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2004, 25(4): 339-342.
[15]	Zhu Huiren;Liu Songling . THE PREDICTIONS OF CONVECTIVE HEAT TRANSFER ON TURBINE BLADE AIRFOIL BY USING LOW REYNOLDS NUMBER TURBULENCE MODEL [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1995, 16(4): 39-47.