Numerical investigation of fluid flow and heat transfer within multilayer wavy microchannels

Abstract

In this research, the fluid flow and heat transfer phenomena within wavy multilayer microchannels comprising variable wavelength and amplitude are studied in laminar flow regime. In the present work, friction factor, Nusselt number and also overall performance of the multilayer microchannel are studied at different wavelengths and amplitudes and also Reynolds numbers. Numerical findings show that an increase in the number of layers results in the increase in the friction factor and Nusselt number. It is shown that the lowest and highest friction factors correspond to the cases of increasing amplitude and increasing wavelength, respectively. It is found that the decreasing wavelength and increasing amplitude cases result in the highest Nusselt number and increasing wavelength configuration leads to the lowest Nusselt number. Results exhibit that, with increasing the Reynolds number, the friction factor depending on the number of layers may increase or decrease whereas the Nusselt number increases. Numerical results show that for one-, two- and three-layer channels, the minimum relative friction factors are 0.1%, 3.7% and 4.7%, and maximum relative Nusselt numbers are 18.2%, 45% and 45.2%, respectively. It is also shown that an increase in the number of layers and Reynolds number causes the channel overall performance to increase. The lowest overall performances is associated to the increasing wavelength structure and the highest overall performance corresponds to the increasing amplitude configuration. It is shown that for one-, two- and three-layer wavy channels, the maximum overall performances are found to be 1.16, 1.43 and 1.43, respectively.

Keywords

• Friction Factor
• Microchannel
• Nusselt Number
• Thermal Performance

References

1. [1] Laidoudi H, Ameur H. Natural convection between hot and cold cylinders in enclosed space filled with wopper-water nanofluid. J Therm Engineer 2022;8:606–618. [CrossRef]
2. [2] Jang SP, Choi S. Cooling performance of a microchannel heat sink with nanofluids. Appl Therm Engineer 2006;26:2457–2463. [CrossRef]
3. [3] Zahmatkesh I, Shandiz MRH. Optimum constituents for MHD heat transfer of nanofluids within porous cavities. J Therm Anal Calorim 2019;138:1669–1681. [CrossRef]
4. [4] Dash B, Nanda J, Rout SK. The role of microchannel geometry selection on heat transfer enhancement in heat sinks: A review. Heat Transf 2022;51:1406–1424. [CrossRef]
5. [5] Rout SK, Hussein AK, Mohanty CP. Multi-objective optimization of a three-dimensional internally finned tube based on Response Surface Methodology (RSM). J Therm Engineer 2015;1:131–142. [CrossRef]
6. [6] Mohammed HA, Gunnasegaran P, Shuaib NH. Numerical simulation of heat transfer enhancement in wavy microchannel heat sink. Int Comm Heat Mass Transf 2011;38:63–68. [CrossRef]
7. [7] Liu GJ, Liu Y, Sunden B, Zhang W. Comparative study of thermal performance of longitudinal and transversal-wavy microchannel heat sinks for electronic cooling. J Electron Packag 2013;135:021008. [CrossRef]
8. [8] Solehati N, Bae J, Sasmito AP. Numerical investigation of mixing performance in microchannel T-junction with wavy structure. Comput Fluids 2014;96:10–19. [CrossRef]

9. [9] Rostami J, Abbassi A. Conjugate heat transfer in a wavy microchannel using nanofluid by two-phase Eulerian–Lagrangian method. Adv Powder Technol 2016;27:9–18. [CrossRef]
10. [10] Bazdar H, Toghraie D, Pourfattah F, Akbari OA, Nguyen HM, Asadi A. Numerical investigation of turbulent flow and heat transfer of nanofluid inside a wavy microchannel with different wavelengths. J Therm Anal Calorim 2020;139:2365–2380. [CrossRef]
11. [11] Eltaweel A, Baobeid A, Tompkins B, Hassan I. Numerical investigation of heat transfer characteristics of a novel wavy-tapered microchannel heat sink. In: Proceedings of ASME 14th Int. Conf. on Nanochannels, Microchannels, and Minichannels; 2016. [CrossRef]
12. [12] Gong L, Lu H, Li H, Xu M. Parametric numerical study of the flow and heat transfer in a dimpled wavy microchannel. Heat Transf Res 2016;47:105–118. [CrossRef]
13. [13] Lin L, Zhao J, Lu G, Wang XD, Yan WM. Heat transfer enhancement in microchannel heat sink by wavy channel with changing wavelength/amplitude. Int J Therm Sci 2017;118:423–434. [CrossRef]
14. [14] Kumar VR, Balasubramanian K, Kumar KK, Tiwari N, Bhatia K. Numerical investigation of fluid flow and heat transfer characteristics in novel circular wavy microchannel. Proc Inst Mech Engineer Part E J Process Mech Eng 2019;233:954–966. [CrossRef]
15. [15] Zhu JF, Li XY, Wang SL, Yang YR. Performance comparison of wavy microchannel heat sinks with wavy bottom rib and side rib designs. Int J Therm Sci 2019;146:106068. [CrossRef]
16. [16] Chong SH, Ooi KT, Wong TN. Optimisation of single and double layer counter flow microchannel heat sinks. Appl Therm Engineer 2002;22:1569–1585. [CrossRef]
17. [17] Shao B, Wang L, Cheng H, Li J. Optimization and numerical simulation of multi-layer microchannel heat sink. Procedia Engineer 2012;31:928–933. [CrossRef]
18. [18] Lin L, Chen YY, Zhang XX, Wang XD. Optimization of geometry and flow rate distribution for double-layer microchannel heat sink. Int J Therm Sci 2014;78:158–168. [CrossRef]
19. [19] Xu S, Wu Y, Cai Q, Yang L, Li Y. Optimization of the thermal performance of multi-layer silicon microchannel heat sinks. Therm Sci 2016;20:2001–2013. [CrossRef]
20. [20] Zhou F, Zhou W, Qiu V, Yu W, Chu X. Investigation of fluid flow and heat transfer characteristics of parallel flow double-layer microchannel heat exchanger. Appl Therm Engineer 2018;137:616–631. [CrossRef]
21. [21] Effat MB, AbdelKarim MS, Hassan O, Abdelgawad M. Numerical investigations of the effect of flow arrangement and number of layers on the performance of multi-layer microchannel heat sinks. In: Proceedings of ASME Int. Mechanical Engineering Congress & Exposition; 2015. [CrossRef]
22. [22] Wong KC, Ang ML. Thermal hydraulic performance of a double-layer microchannel heat sink with channel contraction. Int Comm Heat Mass Transf 2017;81:269–275. [CrossRef]
23. [23] Kumar A, Nath S, Bhanja D. Effect of nanofluid on thermo hydraulic performance of double layer tapered microchannel heat sink used for electronic chip cooling. Numer Heat Transf Part A 2018;73:429–445. [CrossRef]
24. [24] Shen H, Zhang Y, Yan H. Convective heat transfer of parallel-flow and counter-flow double-layer microchannel heat sinks in staggered arrangement. In: Proceedings of ASME Int. Mechanical Engineering Congress & Exposition; 2017. [CrossRef]
25. [25] Khodabandeh E, Rozati SA, Joshaghani M, Akbari OA, Akbari S, Toghraie D. Thermal performance improvement in water nanofluid/GNP–SDBS in novel design of double-layer microchannel heat sink with sinusoidal cavities and rectangular ribs. J Therm Anal Calorim 2019;136:1333–1345. [CrossRef]
26. [26] Shen H, Xie G, Wang CC. Heat transfer and thermodynamic analysis by introducing multiple alternation structure into double-layer microchannel heat sinks. Int J Therm Sci 2019;145:105975. [CrossRef]
27. [27] Shen H, Xie G, Wang CC. The numerical simulation with staggered alternation locations and multiflow directions on the thermal performance of double-layer microchannel heat sinks. Appl Therm Engineer 2019;163:114332. [CrossRef]
28. [28] Xie G, Chen Z, Sunden B, Zhang W. Numerical predictions of the flow and thermal performance of water-cooled single-layer and double-layer wavy microchannel heat sinks. Numer Heat Transf 2013;63:201–225. [CrossRef]
29. [29] Xie G, Chen Z, Sunden B, Zhang W. Comparative study of the flow and thermal performance of liquid-cooling parallel-flow and counter-flow double-layer wavy microchannel heat sinks. Numer Heat Transf Part A 2013;64:30–55. [CrossRef]
30. [30] Shen H, Zhang Y, Wang CC, Xie G. Comparative study for convective heat transfer of counter-flow wavy double-layer microchannel heat sinks in staggered arrangement. Appl Therm Eng 2018;137:228–237. [CrossRef]
31. [31] Wang SL, Chen LY, Zhang BX, Yang YR, Wang XD. A new design of double-layered microchannel heat sinks with wavy microchannels and porous-ribs. J Therm Anal Calorim 2020;141:547–558. [CrossRef]
32. [32] Kharati-Koopaee M, Zare M. Effect of aligned and offset roughness patterns on the fluid flow and heat transfer within microchannels consist of sinusoidal structured roughness. Int J Therm Sci 2015;90:9–23. [CrossRef]
33. [33] Sui Y, Lee PS, Teo CJ. An experimental study of flow friction and heat transfer in wavy microchannels with rectangular cross section. Int J Therm Sci 2011;50:2473–2482. [CrossRef]