Flow Characteristics and Vortex Structure of Flow Across Micro Cylinders by Micro-PIV Measurement and CFD Simulation

Document Type : Regular Article

Authors

School of Mechanical and Electrical Engineering, Kunming University of Science and Technology Kunming, Yunnan Province, 650093, China

10.47176/jafm.16.06.1537

Abstract

The micro tube bank model is a commonly used structure in microelectro mechanical cooling systems. Flow across a micro tube bank is a basic benchmark for analyzing flow resistance and heat transfer capability. In this paper, the flow around a micro tube bank model was studied both experimentally and numerically. Micro-Particle Image Velocimetry technology was used to measure the flow field at different inlet flow rates. The laminar flow model, S-A model and standard k-ε model were used to calculate the flow field inside the micro tube bank model. By comparing the results from the three numerical models with the experimental results, there is a certain gap between them can be noted. However, it was found that the standard k-ε model is better than laminar model and S-A model in the comparison between numerical results and experimental results. In conclusion, the standard k-ε model is more suitable for the numerical calculation of the flow field around a micro scale tube bank model.

Keywords

Main Subjects


Ambreen, T. and M .H. Kim (2018). Effect of fin shape on the thermal performance of nanofluid-cooled micro pin-fin heat sinks. International Journal of Heat & Mass Transfer 126, 245-256.##
Armellini, A., L. Casarsa and P. Giannattasio (2010). Low reynolds number flow in rectangular cooling channels provided with low aspect ratio pin fins. International Journal of Heat and Fluid Flow 31, 689-701.##
Cai, L., G. Xia and H. Wang (2016). Parametric study on thermal and hydraulic characteristics of laminar flow in microchannel heat sink with fan-shaped ribs on sidewalls – Part 1. Heat transfer 97, 1069-1080.##
Ejaz, F., W. Pao and H. M. Ali (2022). Numerical investigation and prediction of phase separation in diverging T-junction. International Journal of Numerical Methods for Heat & Fluid Flow 32(12), 3671-3696.##
Hosseinizadeh, S. F., F. L. Tan and S. M. Moosania (2011). Experimental and numerical studies on performance of PCM-based heat sink with different configurations of internal fins. Applied Thermal Engineering 31, 3827-3838.##
Ji, C., M. Lv, J. Huang, L. Duan and Z. Liu (2021). Experimental study on flow around a single pin fin in a microchannel. Journal of Engineering Thermophysics 42, 1844-1850.##
Jia, Y., G. Xia, Y. Li, D. Ma and B. Cai (2018). Heat transfer and fluid flow characteristics of combined microchannel with cone-shaped micro pin fins. International Communications in Heat & Mass Transfer 92, 78-89.##
Kumar, A., R. Kothari, S. K. Sahu and S. I. Kundalwal (2021a). A comparative study and optimization of phase change material based heat sinks for thermal management of electronic components. Journal of Energy Storage 43, 103224.##
Kumar, A., R. Kothari, S. K. Sahu and S. I. Kundalwal (2021b). Thermal performance of heat sink using nano-enhanced phase change material (NePCM) for cooling of electronic components. Microelectronics Reliability 121, 114144.##
Lee, K. B., M. Wilson and M. Vahdati (2018). Validation of a numerical model for predicting stalled flows in a low-speed fan--part i: modification of spalart- allmaras turbulence model. Journal of Turbomachinery 140, 1-11.##
Li, J., C. Ji, Z. Liu, H. Li, C. Ma and W. Shi (2020). Experimental study on flow characteristics in a microchannel with a single cylinder. Shandong Science 33, 53-62.##
Li, Y., M. Lv, Z. Liu and Y. Zhu (2018). Experimental study on flow past micro-cylinder-groups by Micro-PIV method. Shandong Science 31, 50-54.##
Liu, Z., K. Dong, M. Lv, C. Ji and Y. Jiang (2021). Study on characteristics of flow field in micro pin fin array based on Micro-PIV. CIESC Journal 72, 5094-5101.##
Liu, Z., M. Lv, L. Kong, L. Jia and Y, Jiang (2019), Study on flow field in micro-cylinder groups with different cross-section shapes by Micro-PIV method. Shandong Science 32, 81-87.##
Paramanantham, S. S. S., V. M. Nagulapati and H. Lim (2022). Numerical investigation of the influence of microchannel geometry on the droplet generation process. Journal of Applied Fluid Mechanics 15(5), 1291-1305.##
Qin, L., J. Hua, X. Zhao, Y. Zhu, D. Li and Z. Liu (2019). Micro-PIV and numerical study on influence of vortex on flow and heat transfer performance in micro arrays. Applied Thermal Engineering 161,114186.##
Renfer, A., M. K. Tiwari, T. Brunschwiler, B. Michel and D. Poulikakos (2011). Experimental investigation into vortex structure and pressure drop across microcavities in 3D integrated electronics. Experiments in Fluids 51, 731-741.##
Saravanan, V. and C. K. Umesh. (2018) Numerical comparison for thermo-hydraulic performance of pin fin heat sink with micro channel pin fin heat sink. Sadhana-Academy Proceedings in Engineering Sciences 43, 100.##
Shafeie, H., O. Abouali, K. Jafarpur and G. Ahmadi (2013). Numerical study of heat transfer performance of single-phase heat sinks with micro pin-fin structures. Applied Thermal Engineering 58, 68-76.##
Shah, T. R., H. M. Ali., C. Zhou, H. Babar, M. M. Janjua, M. H. Doranehgard, A. Hussain, U. Sajiad. C. C. Wang and M. Sultan (2022). Potential evaluation of water-based ferric oxide (Fe2O3-water) nanocoolant: An experimental study. Energy 246, 123441.##
Shaheed, R., A. Mohammadian, H. Kheirkhah and G. Hossein. (2019) A comparison of standard k–ε and realizable k–ε turbulence models in curved and confluent channels. Environmental Fluid Mechanics 19, 543-568.##
Siddiqui, M., M. A. Azam and H. M. Ali (2022). Parametric evaluation of condensate water yield from plain finned tube heat exchangers in atmospheric water generation. Arabian Journal for Science and Engineering 47, 16251-16271.##
Stogiannis, I. A., A. D. Passos, A. A. Mouza, S. V. Paras, V. PÄ›nkavováb and J. Tihonb (2014). Flow investigation in a microchannel with a flow disturbing rib. Chemical Engineering Science 119, 65-76.##
Tan, Y. F., M. H. Liu, Y. C. Kang, X. L. Wang and J. B. Liu (2017). Investigation into brush seal vortex separation point based on 2D staggered tube bundle model. Journal of drainage and irrigation machinery engineering 35(7), 602-608##
Wang, K., J. Q. Liu, Z. C. Liu, W. Chen, X. C. Li and L. Zhang (2021). Fluid flow and heat transfer characteristics investigation in the shell side of the branch baffle heat exchanger. Journal of Applied Fluid Mechanics 14 (6), 1775-1786.##
Wang, Y., F. Houshmand, D. Elcock and Y. Peles (2020). Convective heat transfer and mixing enhancement in a microchannel with a pillar. International Journal of Heat and Mass Transfer 62,553-561.##
Xu, J., Y. Gan, D. Zhou and X. Li (2005). Microscale heat transfer enhancement using thermal boundary layer redeveloping concept. International Journal of Heat and Mass Transfer 48, 1662-1674.##
Zhu, Y., N. Guan, D. Li, X. Zhao and Z. Liu (2017). Convection heat transfer characteristics of super-hydrophobic micro pin-fins with different cross-sectional shapes. CIESC Journal 68, 63-71.##