脉冲射流冲击平直表面的对流换热实验

doi:10.7527/S1000-6893.2017.21695

Abstract

Abstract: Experimental tests of jet impingement heat transfer on a flat surface were performed by using the infrared camera for the pulsed jets with a constant operating frequency of 10 Hz and duty cycle of 50%. Comparisons with continuous jets were made at the jet Reynolds numbers ranging from 5 000 to 20 000 and the dimensionless nozzle-to-surface distances ranging from 2 to 8. The results show that the pulsed jet possesses the same basic heat transfer features as the continuous jet impingement, such as increase of the convective heat transfer coefficient with the increase of jet Reynolds numbers and rapid decrease of the local convective heat transfer coefficient along the radial direction. However, different from the continuous jet, the pulsed jet produces some differences in heat transfer either at the stagnation point or the wall jet zone. This is tightly associated with the jet Reynolds number and nozzle-to-surface distance. In general, the pulsed jet impingement exhibits its advantage over the continuous jet at larger dimensionless nozzle-to-surface distances, especially at a high jet Reynolds number. At a small dimensionless nozzle-to-surface distance, the continuous jet is demonstrated to achieve better heat transfer than the pulsed jet. For Re=20 000, the pulsed jet produces a slight improvement of the region-averaged convective heat transfer relative to the continuous jet only when the specified region for average use has a large radius beyond three times of the jet-nozzle diameter.

Key words: jet impingement, pulsed jet, continuous jet, convective heat transfer, heat transfer comparison

CLC Number:

V235

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.

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(2):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(2):721-725.
[4] 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.
[5] 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(1):71-80.
[6] NAKOD P M, PRABHU S V, VEDULA R P. Heat transfer augmentation between impinging circular air jet and flat plate using finned surfaces and vortex generators[J]. Experimental Thermal and Fluid Science, 2008, 32(5):1168-1187.
[7] YANG H Q, KIM T, LU T J, et al. Flow structure, wall pressure and heat transfer characteristics of impinging annular jet with/without steady swirling[J]. International Journal of Heat and Mass Transfer, 2010, 53(19):4092-4100.
[8] VIOLATO D, SCARANO F. Three-dimensional evolution of flow structures in transitional circular and chevron jets[J]. Physics of Fluids, 2011, 23(12):124104.
[9] 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.
[10] ZUMBRUNNEN D A, AZIZ M. Convective heat transfer enhancement due to intermittency in an impinging jet[J]. ASME Journal of Heat Transfer, 1993, 115(1):91-98.
[11] 周静伟, 杨兴贤, 耿丽萍, 等. 非稳态冲击射流强化传热试验研究[J]. 机械工程学报, 2010, 46(6):144-148. ZHOU J W, YANG X X, GENG L P, et al. Experimental investigation on heat transfer augmentation with unsteady impinging jet[J]. Journal of Mechanical Engineering, 2010, 46(6):144-148(in Chinese).
[12] ZHOU J W, WANG Y G, MIDDELBERG G, et al. Unsteady jet impingement heat transfer on smooth and non-smooth surfaces[J]. International Communications in Heat and Mass Transfer, 2009, 36(2):103-110.
[13] VALIORGUE P, PERSOONS T, MCGUINN A, et al. Heat transfer mechanisms in an impinging synthetic jet for a small jet-to-surface spacing[J]. Experimental Thermal and Fluid Science, 2009, 33(4):597-603.
[14] ZHANG J Z, GAO S, TAN X M. Convective heat transfer on a flat plate subjected to normally synthetic jet and horizontally forced flow[J]. International Journal of Heat and Mass Transfer, 2013, 57(1):321-330.
[15] SHERIFF H, ZUMBRUNNEN D. Effect of flow pulsations on the cooling effectiveness of an impinging jet[J]. ASME Journal of Heat Transfer, 1994, 116(4):886-895.
[16] HERWIG H, MIDDELBERG G. The physics of unsteady jet impingement and its heat transfer performance[J]. Acta Mechanics, 2008, 201(1):171-184.
[17] MEDINA H, BENARD E, EARLY J M. Reynolds number effects on fully developed pulsed jets impinging on flat surfaces[J]. AIAA Journal, 2013, 51(10):2305-2318.
[18] ALIMOHAMMADI S, MURRAY D B, PERSOONS T. On the numerical-experimental analysis and scaling of convective heat transfer to pulsating impinging jets[J]. International Journal of Thermal Sciences, 2015, 98:296-311.
[19] HOFMANN H T, MOVILEANU D L, KIND M, et al. Influence of a pulsation on heat transfer and flow structure in submerged impinging jets[J]. International Journal of Heat and Mass Transfer, 2007, 50(17-18):3638-3648.
[20] BEHERA R C, DUTTA P, SRINIVASAN K. Numerical study of interrupted impinging jets for cooling of electronics[J]. IEEE Transactions on Components and Packaging Technologies, 2007, 30(2):275-284.
[21] PERSOONS T, BALGAZIN K, BROWN K, et al. Scaling of convective heat transfer enhancement due to flow pulsation in an axisymmetric impinging jet[J]. ASME Journal of Heat Transfer, 2013, 135(11):111012.
[22] TAN X M, ZHANG J Z. Flow and heat transfer characteristics under synthetic jets impingement driven by piezoelectric actuator[J]. Experimental Thermal and Fluid Science, 2013, 48:134-146.
[23] 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):120982. 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):120982(in chinese).
[24] MOFFAT R J. Describing the uncertainties in experimental results[J]. Experimental Thermal and Fluid Science, 1998, 1(1):3-17.
[25] 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.

Experiment of convective heat transfer of pulsed jet impingement on a flat 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, 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.
[5]	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.
[6]	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.
[7]	LI Xinjun, ZHANG Jingzhou, TAN Xiaoming. Characteristics of heat transfer with single piezoelectric fan [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(7): 120982-120982.
[8]	ZHU Jianfeng, HUANG Guoping, FU Xin, FU Yong. Spatiotemporal Characteristics Analysis for Controlling Flow Separation in Divergent Curved Channels with POD Method [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(4): 921-932.
[9]	ZHU Jianfeng, HUANG Guoping, FU Xin, FU Yong. Investigation of Technology for Controlling Flow Separation by Micro-pulsed-jet Without External Device [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(8): 1757-1767.
[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.