Abstract
We experimentally and numerically investigated the effect of expansion pipe length on heat transfer enhancement and flow characteristics of impinging jet array with mounting expansion pipe. The inner diameter (d) and the length of each main pipe nozzle was d = 17.2 mm and 200 mm, respectively. Nozzle arrangement was distributed in 5 rows × 5 columns with an in-line configuration. The jet-to-wall distance (H) was fixed at H/d = 8, while the jet-to-jet spacing (S) was varied at S/d = 6 and 8. The expansion pipe length (L) was varied at L/d = 4, 6 and 8, and the inner diameter of the expansion pipe (D) was fixed at D/d = 4. Reynolds number of the jets was kept constant at 30000. The conventional impinging jets were also performed to compare with the case of jets with mounting expansion pipe. The 3-D numerical simulation with v2-f turbulence model was applied to simulate the flow characteristics. Results showed that the surrounding air was induced into the expansion pipe, and an entrainment of induced air became greater when expansion pipe was longer. This influenced more markedly on enhancement of Nusselt number at stagnation point for narrow jet-to-jet spacing (S/d = 6).
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
K. Jambunathan et al., A review of heat transfer data for single circular jet impingement, International J. of Heat and Fluid Flow, 13 (2) (1992) 106–115.
R. Viskanta, Heat transfer to impinging isothermal gas and flame jets, Experimental Thermal and Fluid Science, 6 (2) (1993) 111–134.
H. Martin, Heat and mass transfer between impinging gas jets and solid surfaces, Advances in Heat Transfer, 13 (1977) 1–60.
B. R. Hollworth and R. D. Berry, Heat transfer from arrays of impinging jets with large jet-to-jet spacing, J. of Heat Transfer, 100 (2) (1978) 352–357.
A. M. Huber and R. Viskanta, Effect of jet-jet spacing on convective heat transfer to confined, impinging arrays of axisymmetric air jets, International J. of Heat and Mass Transfer, 37 (18) (1994) 2859–2869.
L. F. G. Geers, M. J. Tummers, T. J. Bueninck and K. Hanjalic, Heat transfer correlation for hexagonal and in-line arrays of impinging jets, International J. of Heat and Mass Transfer, 51 (21–22) (2008) 5389–5399.
N. Gao, H. Sun and D. Ewing, Heat transfer to impinging round jets with triangular tabs, International J. of Heat and Mass Transfer, 46 (14) (2003) 2557–2569.
S. J. Lee, Y. G. Jang and Y. S. Choi, Stereoscopic-PIV measurement of turbulent jets issuing from a sharp-edged circular nozzle with multiple triangular tabs, J. of Mechanical Science and Technology, 26 (9) (2012) 2765–2771.
G. Cafiero, G. Castrillo, C. S. Greco and T. Astarita, Effect of the grid geometry on the convective heat transfer of impinging jets, International J. of Heat and Mass Transfer, 104 (2017) 39–50.
P. Muvvala, C. Balaji and S. P. Venkateshan, Experimental investigation on the effect of wire mesh at the nozzle exit on heat transfer from impinging square jets, Experimental Thermal and Fluid Science, 84 (2017) 78–89.
S. Eiamsa-ard and W. Changcharoen, Flow structure and heat transfer in a square duct fitted with dual/quadruple twisted-tapes: Influence of tape configuration, J. of Mechanical Science and Technology, 29 (8) (2015) 3501–3518.
A. Saysroy, W. Changcharoen and S. Eiamsa-ard, Performance assessment of turbular heat exchanger tubes containing rectangular-cut twisted tapes with alternate axes, J. of Mechanical Science and Technology, 32 (1) (2018) 433–445.
C. Nuntadusit, M. Wae-hayee, A. Buyajitradulya and S. Eiamsa-ard, Heat transfer enhancement by multiple swirling impinging jets with twisted-tape swirl generators, International Communications in Heat and Mass Transfer, 39 (1) (2012) 102–107.
C. Nuntadusit, M. Wae-hayee, A. Bunyajitradulya and S. Eiamsa-ard, Visualization of flow and heat transfer characteristics for swirling impinging jet, International Communications in Heat and Mass Transfer, 39 (5) (2012) 640–648.
S. V. Alekseenko, A. V. Bilsky, V. M. Dulin and D. M. Markovich, Experimental study of an impinging jet with different swirl rates, International J. of Heat and Fluid Flow, 28 (6) (2007) 1340–1359.
M. Fenot, E. Dorignac and G. Lalizel, Heat transfer and flow structure of a multichannel impinging jet, International J. of Thermal Sciences, 90 (2015) 323–338.
X. T. Trinh, M. Fenot and E. Dorignac, The effect of nozzle geometry on local convective heat transfer to unconfined impinging air jets, Experimental Thermal and Fluid Science, 70 (2016) 1–16.
R. Vinze, S. Chandel, M. D. Limaye and S. V. Prabhu, Local heat transfer distribution between smooth flat surface and impinging incompressible air jets from a chevron nozzle, Experimental Thermal and Fluid Science, 78 (2016) 124–136.
W. C. Selerowicz, A. P. Szumowski and G. E. A. Meier, Self-excited compressible flow in a pipe-collar nozzle, J. of Fluid Mechanics, 228 (1991) 465–85.
Y. Zeng, T. H. New and T. L. Chng, Flow behavior of turbulent nozzle jets issuing from bevelled collars, Experimental Thermal and Fluid Science, 35 (8) (2011) 1555–1564.
G. J. Nathan, J. Mi, Z. T. Alwahabi, G. J. R. Newbold and D. S. Nobes, Impacts of a jet's exit flow pattern on mixing and combustion performance, Progress in Energy and Combustion Science, 32 (5–6) (2006) 496–538.
K. Yeranee, M. Wae-hayee, I. Piya, Y. Rao and C. Nuntadusit, The study of flow and heat transfer characteristics of impinging jet array mounting air-induced duct, IOP Conference Series: Materials Science and Engineering, 243 (2017).
C. Nuntadusit, M. Wae-hayee and N. Kaewchoothong, Heat transfer enhancement on a surface of impinging jet by increasing entrainment using air-augmented duct, International J. of Heat and Mass Transfer, 127 (2018) 751–767.
S. Kline and F. Mcclintock, Describing uncertainties in single-sample experiments, Mechanical Engineering, 75 (1953) 3–8.
P. Gulati, V. Katti and S. V. Prabu, Influence of the shape of the nozzle on local heat transfer distribution between smooth flat surface and impinging air jet, International J. of Thermal Sciences, 48 (3) (2009) 602–617.
V. Katti and S. V. Prabhu, Experimental study and theoretical analysis of local heat transfer distribution between smooth flat surface and impinging air jet from a circular straight pipe nozzle, International J. of Heat and Mass Transfer, 51 (17–18) (2008) 4480–4495.
Q. Y. Zhao, H. Chung, S. M. Choi and H. H. Cho, Effect of guide wall on jet impingement cooling in blade leading edge channel, J. of Mechanical Science and Technology, 30 (2) (2016) 525–531.
N. Zuckerman and N. Lior, Jet impingement heat transfer: physics, correlations and numerical modeling, Advances in Heat Transfer, 39 (2006) 565–631.
M. Behnia, S. Parneix and P. A. Durbin, Prediction of heat transfer in an axisymmetric turbulent jet impinging on a flat plate, International J. of Heat and Mass Transfer, 41 (12) (1998) 1845–1855.
B. Sunden, J. Larocque and Z. Wu, Numerical simulation of heat transfer from impinging swirling jets, Impingement Cooling in Gas Turbines: Design, Applications, and Limitations (2014) 185–203.
M. Wae-hayee, P. Tekasakul, S. Eiamsa-ard and C. Nuntadusit, Effect of cross-flow velocity on flow and heat transfer characteristics of impinging jets with low jet-to-plate distance, J. of Mechanical Science and Technology, 28 (7) (2014) 2909–2917.
M. Ghorbani, M. Yildiz, D. Gozuacik and A. Kosar, Cavitating nozzle flows in micro- and minichannels under the effect of turbulence, J. of Mechanical Science and Technology, 30 (6) (2016) 2565–2581.
Author information
Authors and Affiliations
Corresponding author
Additional information
Recommended by Associate Editor Ji Hwan Jeong
Kirttayoth Yeranee is currently a Master’s student in international double degree program in the Department of Mechanical Engineering, Prince of Songkla University (PSU), Thailand and School of Mechanical Engineering, Shanghai Jiao Tong University (SJTU), China. His interests include impinging jet, heat transfer enhancement and CFD.
Makatar Wae-hayee is a lecturer in the Department of Mechanical Engineering, Prince of Songkla University (PSU), Thailand. He received Ph.D. at the same university in 2014. His interests concern flow and heat transfer, CFD and thermal-fluid engineering.
Ibroheng Piya is lecturer in the Department of Mechanical Engineering, Princess of Naradhiwas University (PNU), Thailand. He received the Master’s in Engineering in Mechanical Engineering from Prince of Songkla University (PSU), Thailand in 2013. His research interest includes flow and heat transfer engineering.
Yu Rao is a Professor at Institute of Turbomachinery, School of Mechanical Engineering, Shanghai Jiao Tong University, China. He received the Ph.D. in Aeronautics and Astronautics at Beijing University, and TU Darmstadt in Germany in 2006. His current interests include gas turbine aerodynamics, heat transfer and cooling technology.
Chayut Nuntadusit is an Assistant Professor of Mechanical Engineering at Prince of Songkla University, Thailand. He received the Ph.D. at Osaka University in 2004. His current interests include heat transfer enhancement for jet impingement, jet flow control and optical measurement.
Rights and permissions
About this article
Cite this article
Yeranee, K., Wae-hayee, M., Piya, I. et al. Effects of expansion pipe length on heat transfer enhancement of impinging jet array. J Mech Sci Technol 33, 2429–2438 (2019). https://doi.org/10.1007/s12206-019-0242-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12206-019-0242-0