Numerical Analysis of Hydraulic and Thermal Performance of Al2O3-Water Nanofluid in a Zigzag Channel with Central Winglets

Abstract

This study numerically examined the impacts of central winglets and Al2O3-water nanofluid on the thermo-hydraulic performance in a zigzag channel. The analyzes based on Computational Fluid Dynamic (CFD) using the SIMPLE algorithm are actualized for nanofluid flow in Reynolds numbers (Re) varying between 200 and 1200. The volume fraction of nanoparticle (φ) is changed from 1% to 5 %. The upper and lower zigzag surfaces are kept at Tw = 350 K constant temperature. The results are given in terms of thermal improvement (η), dimensionless friction factor (Γ), and thermo-hydraulic performance (THP). In addition, the work is compared with the zigzag channel without winglet for the base fluid. The temperature and velocity distributions are obtained for the zigzag channel with and without winglet at different Reynolds numbers. The results show that the nanofluid and winglets contribute considerably to the enhancement of heat transfer, but the friction factor slightly increases. The heat transfer improves with increasing inlet velocity and particle volume fraction. The highest thermo-hydraulic performance is obtained as approximately 2.12 for Re = 400 and φ = 0.05.

Keywords

• Zigzag channel
• Central winglet
• Nanofluid
• Heat transfer
• Friction factor

References

1. [1] Lei, Y.G., He, Y.L., Li, R., Gao, Y.F., “Effects of baffle inclination angle on flow and heat transfer of a heat exchanger with helical baffles”, Chemical Engineering Research, 47(12): 2336–2345, (2008).
2. [2] Li, Z., Gao, Y., “Numerical study of turbulent flow and heat transfer in cross corrugated triangular ducts with delta-shaped baffles”, International Journal of Heat and Mass Transfer, 108: 658–670, (2017).
3. [3] Sriromreun, P., “Numerical study on heat transfer enhancement in a rectangular duct with incline shaped baffles”, Chemical Engineering Transactions, 57: 1243–1248, (2017).
4. [4] Rashidi, S., Eskandarian, M., Mahian, O., Poncet, S., “Combination of nanofluid and inserts for heat transfer enhancement, Gaps and challenges”, Journal of Thermal Analysis and Calorimetry, 135: 437–460, (2019).
5. [5] Alnak, D.E., “Thermohydraulic performance study of different square baffle angles in cross-corrugated channel”, Journal of Energy Storage, 28:101295, (2020).
6. [6] Chang, S.W., Cheng, T.H., “Thermal performance of channel flow with detached and attached pin-fins of hybrid shapes under inlet flow pulsation”, International Journal of Heat and Mass Transfer, 164: 120554, (2021).
7. [7] Kumar, R., Goel, V., Kumar, A., “Investigation of heat transfer augmentation and friction factor in triangular duct solar air heater due to forward facing chamfered rectangular ribs: a CFD based analysis”, Renewable Energy,115: 824–835, (2018).
8. [8] Nakhchi, ME., “Experimental optimization of geometrical parameters on heat transfer and pressure drop inside sinusoidal wavy channels”, Thermal Science and Engineering Progress, 9: 121–31, (2019).

9. [9] Hassanzadeh, R., Tokgoz, N., “Thermal-hydraulic characteristics of nanofluid flow in corrugated ducts”, Journal of Engineering Thermophysics, 26(4): 498-513, (2017).
10. [10] Tokgoz, N., Tunay, T., Sahin, B., “Effect of corrugated channel phase shifts on flow structures and heat transfer rate”, Experimental Thermal and Fluid Science, 99: 374-391, (2018).
11. [11] Tokgoz, N., “Experimental and numerical investigation of flow structure in a cylindrical corrugated channel”, International Journal of Mechanical Sciences, 157: 787-801, (2019).
12. [12] Hassanzadeh, R., Tokgoz, N., “Analysis of heat and fluid flow between parallel plates by inserting triangular cross-section rods in the cross-stream plane”, Applied Thermal Engineering, 160, 113981. (2019)
13. [13] Karwa, R., Maheshwari, B. K., “Heat transfer and friction in an asymmetrically heated rectangular duct with half and fully perforated baffles at different pitches”, International Communications in Heat and Mass Transfer, 36: 264–268, (2009).
14. [14] Sureandhar, G., Srinivasan, G., Muthukumar, P., Senthilmurugan, S., “Performance analysis of arc rib fin embedded in a solar air heater”, Thermal Science and Engineering Progress, 23: 100891, (2021).
15. [15] Sripattanapipat, S., Promvonge, P., “Numerical analysis of laminar heat transfer in a channel with diamond-shaped baffles”, International Communications in Heat and Mass Transfer, 36(1): 32-38, (2009).
16. [16] Kwankaomeng, S., Promvonge, P., “Numerical prediction on laminar heat transfer in square duct with 30° angled baffle on one wall”, International Communications in Heat and Mass Transfer, 37: 857-866, (2010).
17. [17] Menasria, F., Zedairia, M., Moummi, A., “Numerical study of thermohydraulic performance of solar air heater duct equipped with novel continuous rectangular baffles with high aspect ratio”, Energy, 133: 593-608, (2017).
18. [18] Karabulut, K., “Heat transfer and pressure drop evaluation of different triangular baffle placement angles in cross-corrugated triangular channels”, Thermal Science, 24: 355-365, (2020).
19. [19] Promvonge, P., Tamna, S., Pimsarn, M., Thianpong, C., “Thermal characterization in a circular tube fitted with inclined horseshoe baffles”, Applied Thermal Engineering, 75: 1147–1155, (2015).
20. [20] Kumar, R., Kumar, A., Chauhan, R., Sethi, M., “Heat transfer enhancement in solar air channel with broken multiple V-type baffle”, Case Studies in Thermal Engineering, 8: 187–197, (2016).
21. [21] Sahel, D., Ameur, H., Benzeguir, R., Kamla, Y., “Enhancement of heat transfer in a rectangular channel with perforated baffles”, Applied Thermal Engineering, 101: 156–164, (2016).
22. [22] Menni, Y., Azzi, A., Chamkha, A.J., Harmand, S., “Analysis of fluid dynamics and heat transfer in a rectangular duct with staggered baffles”, Journal of Applied and Computational Mechanics, 5(2): 231-248, (2019).
23. [23] Luan, N.T., Phu, N.M., “Thermohydraulic correlations and exergy analysis of a solar air heater duct with inclined baffles”, Case Studies in Thermal Engineering, 21: 100672, (2020).
24. [24] Bensaci, C.E., Moummi, A., Sanchez de la Flor, F.J., Rodriguez Jara, E.A., Rincon-Casado, A., Ruiz-Pardo, A., “Numerical and experimental study of the heat transfer and hydraulic performance of solar air heaters with different baffle positions”, Renewable Energy, 155: 1231–1244, (2020).
25. [25] Wang, D., Liu, J., Liu, Y., Wang, Y., Li, B., Liu, J., “Evaluation of the performance of an improved solar air heater with “S” shaped ribs with gap”, Solar Energy, 195: 89–101, (2020).
26. [26] Skullong, S. Promvonge, P., Thianpong, C., Pimsarn, M., “Thermal performance in solar air heater channel with combined wavy-groove and perforated-delta wing vortex generators”, Applied Thermal Engineering, 100: 611–620, (2016).
27. [27] Tang, S.Z. Wang, F.L., He, Y.L., Yu, Y., Tong, Z.X., “Parametric optimization of H-type finned tube with longitudinal vortex generators by response surface model and genetic algorithm”, Applied Energy, 239: 908–918, (2019).
28. [28] Promvonge, P., Skullong, S., “Thermo-hydraulic performance in heat exchanger tube with V-shaped winglet vortex generator”, Applied Thermal Engineering, 164: 114424, (2020).
29. [29] Sun, Z., Zhang, K., Li, W., Chen, Q., Zheng, N., “Investigations of the turbulent thermal-hydraulic performance in circular heat exchanger tubes with multiple rectangular winglet vortex generators”, Applied Thermal Engineering, 168: 114838, (2020).
30. [30] Zheng, N., Yan, F., Zhang, K., Zhou, T., Sun, Z., “A review on single-phase convective heat transfer enhancement based on multi-longitudinal vortices in heat exchanger tubes”, Applied Thermal Engineering, 164: 114475, (2020).
31. [31] Nakhchi, M.E., Hatami, M., Rahmati, M., “Experimental investigation of performance improvement of double-pipe heat exchangers with novel perforated elliptic turbulators”, International Journal of Thermal Sciences, 168: 107057, (2021).
32. [32] Modi, J.A., Rathod, M.K., “Comparative study of heat transfer enhancement and pressure drop for fin-and-circular tube compact heat exchangers with sinusoidal wavy and elliptical curved rectangular winglet vortex generator”, International Journal of Heat and Mass Transfer, 141: 310-326, (2019).
33. [33] Promvonge, P., Promthaisong, P., Skullong, S., “Experimental and numerical heat transfer study of turbulent tube flow through discrete V-winglets”, International Journal of Heat and Mass Transfer, 151: 119351, (2020).
34. [34] Akcay, S., Akdag, U., “Parametric investigation of effect on heat transfer of pulsating flow of nanofluids in a tube using circular rings”, Pamukkale University, Journal of Engineering Sciences, 24(4): 597-604, (2018).
35. [35] Tokgoz, N., Alıc, E., Kaska, O., Aksoy, M.M., “The numerical study of heat transfer enhancement using Al2O3-water nanofluid in corrugated duct application”, Journal of Thermal Engineering, 4(3): 1984-1997, (2018).
36. [36] Akdag, U., Akcay, S., Demiral, D., “Heat transfer enhancement with laminar pulsating nanofluid flow in a wavy channel”, International Communications in Heat Mass Transfer, 59: 17–23, (2014).
37. [37] Akdag, U., Akcay, S., Demiral, D., “Heat transfer enhancement with nanofluids under laminar pulsating flow in a trapezoidal-corrugated channel”, Progress in Computational Fluid Dynamics, 17(5): 302-312, (2017).
38. [38] Akdag, U., Akcay, S., Demiral, D., “Heat transfer in a triangular wavy channel with CuO-water nanofluids under pulsating flow”, Thermal Science, 23(1): 191-205, (2019).
39. [39] Fazeli, H., Madani, S., Mashaei, P.R., “Nanofluid forced convection in entrance region of a baffled channel considering nanoparticle migration”, Applied Thermal Engineering, 106: 293–306, (2016).
40. [40] Karouei, S.H.H., Ajarostaghi, S.S.M., Bandpy, M.G., Fard, S.R.H., “Laminar heat transfer and fluid flow of two various hybrid nanofluids in a helical double pipe heat exchanger equipped with an innovative curved conical turbulator”, Journal of Thermal Analysis and Calorimetry, 143: 1455–1466, (2021).
41. [41] Manca, O., Nardini, S., Ricci, D., “A numerical study of nanofluid forced convection in ribbed channels”, Applied Thermal Engineering, 37: 280-297, (2012).
42. [42] Heshmati, A., Mohammed, H.A., Darus, A.N., “Mixed convection heat transfer of nanofluids over backward facing step having a slotted baffle”, Applied Mathematics and Computation, 240: 368–386, (2014).
43. [43] Huminic, G., Huminic, A., “Heat transfer and flow characteristics of conventional fluids and nanofluids in curved tubes: A review”, Renewable and Sustainable Energy Reviews, 58: 1327–1347, (2016).
44. [44] Menni, Y., Chamkha, A.J., Ghazvini, M., Ahmadi, M.H., Ameur, H., Issakhov, A., Inc, M., “Enhancement of the turbulent convective heat transfer in channels through the baffling technique and oil/multiwalled carbon nanotube nanofluids”, Numerical Heat Transfer, Part A: Applications, 79 (4): 311-351, (2021).
45. [45] Qi, C., Wan, Y.L., Li, C.Y., Han, D.T., Rao, Z.H., “Experimental and numerical research on the flow and heat transfer characteristics of TiO2-water nanofluids in a corrugated tube”, International Journal of Heat and Mass Transfer, 115: 1072–1084, (2017).
46. [46] Pordanjani, A. H., Aghakhani, S., Afrand, M., Mahmoudi, B., Mahian, O., Wongwises, S., “An updated review on application of nanofluids in heat exchangers for saving energy”, Energy Conversion Management, 198: 111886, (2019).
47. [47] Mei, S., Qi, C., Luo, T., Zhai, X., Yan, Y., “Effects of magnetic field on thermo-hydraulic performance of Fe3O4-water nanofluids in a corrugated tube”, International Journal of Heat and Mass Transfer, 128: 24–45, (2019).
48. [48] Kaood, A., Hassan, M.A., “Thermo-hydraulic performance of nanofluids flow in various internally corrugated tubes”, Chemical Engineering & Processing: Process Intensification, 154: 08043, (2020).
49. [49] Tian, M.-W., Khorasani, S., Moria, H., Pourhedayat, S., Dizaji, H.S., “Profit and efficiency boost of triangular vortex-generators by novel techniques”, International Journal of Heat and Mass Transfer, 156: 119842, (2020).
50. [50] Ajeel, R.K., Sopian, K., Zulkifli, R., “Thermal-hydraulic performance and design parameters in a curved-corrugated channel with L-shaped baffles and nanofluid”, Journal of Energy Storage, 34: 101996, (2021).
51. [51] Karabulut, K., Buyruk, E., Kılınç, F. “Experimental investigation of the effect of nanofluid including graphene-oxide nanoparticles on convective heat transfer and pressure drop enhancement in a straight pipe”, Engineer and Machinery, 59 (690): 45-67, (2018).
52. [52] Karabulut, K., Buyruk, E., Kilinc, F., “Experimental research of convective heat transfer for graphene-oxide nanofluid in a straight circular tube”, 8th International Advanced Technologies Symposium (IATS’17), 7: 1368-1376, Elazıg-Turkey, (2017).
53. [53] Karabulut, K., Buyruk, E., Kilinc, F., “Experimental and numerical investigation of convection heat transfer in a circular copper tube using graphene oxide nanofluid”, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42: 230, (2020).
54. [54] Kılınc, F., Buyruk, E., Karabulut, K., “Experimental investigation of cooling performance with graphene based nano-fluids in a vehicle radiator”, Heat and Mass Transfer, 56: 521-530, (2020).
55. [55] ANSYS Inc., ANSYS Fluent user guide & theory guide- Release 15.0. USA, (2015).
56. [56] Kakac, S., Pramuanjaroenkij, A., “Review of convective heat transfer enhancement with nanofluids”, International Journal of Heat and Mass Transfer, 52: 3187–3196, (2009).
57. [57] Meyer, J.P., Abolarin, S.M., “Heat transfer and pressure drop in the transitional flow regime for a smooth circular tube with twisted tape inserts and a square-edged inlet”, International Journal of Heat and Mass Transfer, 117: 11-29, (2018).