پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 31 |
| تعداد شمارهها | 864 |
| تعداد مقالات | 8,349 |
| تعداد مشاهده مقاله | 16,827,766 |
| تعداد دریافت فایل اصل مقاله | 11,258,858 |
A Simulation Study of Forced, Free, and Mixed Convection of Al2O3-Water Nanofluid Flow Inside a Cavity | ||
| Challenges in Nano and Micro Scale Science and Technology | ||
| مقاله 2، دوره 14، شماره 1، خرداد 2026، صفحه 10-20 اصل مقاله (912.86 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22111/cnmst.2026.55024.1289 | ||
| نویسنده | ||
| Tohid Adibi* | ||
| Department of Mechanical Engineering, University of Bonab, Bonab, Iran | ||
| چکیده | ||
| This study aims to investigate the heat transfer and fluid flow characteristics of alumina (Al₂O₃) based nanofluids under various convective conditions, with a particular focus on understanding the interplay between thermal performance and hydrodynamic costs. The primary goal is to elucidate the innovative aspect of using nanofluids in different flow regimes, addressing a fundamental question regarding their efficiency. A numerical simulation approach was employed to analyze the behavior of the nanofluid. The simulations were conducted under specific boundary conditions, including a cold, rightward-moving top plate and a hot, leftward-moving bottom plate. The side walls were treated as adiabatic. The nanofluid, containing 5% by volume of Al₂O₃ nanoparticles, was modeled considering both forced convection due to the moving plates and natural convection driven by temperature differences. The Richardson number, representing the ratio of natural to forced convection, was systematically varied to cover a wide range of flow regimes. This study numerically investigates the thermofluid performance of Al₂O₃–water nanofluid (5% vol.) in a cavity across forced (Ri=0.1), mixed (Ri=1), and natural (Ri=10) convection regimes. While heat transfer shows modest gains (Nu increases from 13.67 to 13.77 at Ri=0.1, and 14.78 to 16.23 at Ri=1), the friction factor significantly rises (e.g., from 1.31 to 2.39 at Ri=0.1). The Thermally Enhanced Performance (TEP) index consistently remains below unity (approx. 0.82-0.84), indicating that increased viscous resistance outweighs thermal benefits. Consequently, the Al₂O₃–water nanofluid does not enhance overall system energy efficiency under the studied conditions, highlighting the need for holistic performance assessment in engineering applications. | ||
| کلیدواژهها | ||
| Nanofluid convection؛ Al2O3–water؛ Cavity flow؛ Global energy efficiency TEC/TEP؛ Grid-independence and convergence | ||
| مراجع | ||
|
[1] Y. Su and X. Lu, "Energy Saving Research on Temperature Control in Data Center Server Rooms," Journal of Physics: Conference Series, vol. 2800, no. 1, p. 012033, 2024/07/01 2024, doi: 10.1088/1742-6596/2800/1/012033.
[2] N. V. K, "Opportunities, challenges, and state of the art of flexible heat-pipe heat exchangers: A comprehensive review," Heat Transfer, vol. 53, no. 2, pp. 893-938, 2024/03/01 2024, doi: https://doi.org/10.1002/htj.22978.
[3] M. S. Bretado-de los Rios, C. I. Rivera-Solorio, and K. D. P. Nigam, "An overview of sustainability of heat exchangers and solar thermal applications with nanofluids: A review," Renewable and Sustainable Energy Reviews, vol. 142, p. 110855, 2021/05/01/2021, doi: https://doi.org/10.1016/j.rser.2021.110855.
[4] S. E. Razavi, T. Adibi, S. F. Ahmed, and S. C. Saha, "Semi-analytical solution of nanofluid flow with convective and radiative heat transfer," International Journal of Modern Physics B, p. 2450345, 2023, doi: 10.1142/S0217979224503454.
[5] N. Dharmakkan et al., "A case study on analyzing the performance of microplate heat exchanger using nanofluids at different flow rates and temperatures," Case Studies in Thermal Engineering, vol. 44, p. 102805, 2023/04/01/ 2023, doi: https://doi.org/10.1016/j.csite.2023.102805.
[6] W. Ajeeb, R. R. S. Thieleke da Silva, and S. M. S. Murshed, "Experimental investigation of heat transfer performance of Al2O3 nanofluids in a compact plate heat exchanger," Applied Thermal Engineering, vol. 218, p. 119321, 2023/01/05/2023, doi: https://doi.org/10.1016/j.applthermaleng.2022.119321.
[7] T. Adibi, S. E. Razavi, and O. Adibi, "A Characteristic-based Numerical Simulation of Watertitanium Dioxide Nano-fluid in Closed Domains," (inen), International Journal of Engineering, vol. 33, no. 1, pp. 158-163, 2020, doi: 10.5829/ije.2020.33.01a.18.
[8] S. Yousefzadeh, H. Rajabi, N. Ghajari, M. M. Sarafraz, O. A. Akbari, and M. Goodarzi, "Numerical investigation of mixed convection heat transfer behavior of nanofluid in a cavity with different heat transfer areas," Journal of Thermal Analysis and Calorimetry, vol. 140, no. 6, pp. 2779-2803, 2020.
[9] T. Adibi, S. E. Razavi, O. Adibi, M. Vajdi, and F. Sadegh Moghanlou, "The response of nano-ceramic doped fluids in heat convection models: A characteristics-based numerical approach," (in en), Scientia Iranica, vol. 28, no. 5, pp. 2671-2683, 2021, doi: 10.24200/sci.2021.56574.4794.
[10]G. Xia, L. Cao, and G. Bi, "A review on battery thermal management in electric vehicle application," Journal of Power Sources, vol. 367, pp. 90-105, 2017/11/01/ 2017, doi: https://doi.org/10.1016/j.jpowsour.2017.09.046.
[11]T. Adibi, S. E. Razavi, S. F. Ahmed, H. Hassanpour, N. Mohammadzadeh, and S. M. Muyeen, "FluidStructure-Acoustic coupling analysis for external laminar and turbulent fluid flows," Results in Physics, vol. 49, p. 106496, 2023/06/01/ 2023, doi: https://doi.org/10.1016/j.rinp.2023.106496.
[12]M. H. Shojaeefard and S. Saremian, "Analyzing the impact of blade geometrical parameters on energy recovery and efficiency of centrifugal pump as turbine installed in the pressure-reducing station," Energy, vol. 289, p. 130004, 2024/02/15/ 2024, doi: https://doi.org/10.1016/j.energy.2023.130004.
[13]M. W. Azam, G. Q. Chaudhary, U. Sajjad, N. Abbas, and W.-M. Yan, "Performance investigation of solar assisted desiccant integrated Maisotsenko cycle cooler in subtropical climate conditions," Case Studies in Thermal Engineering, vol. 44, p. 102864, 2023/04/01/ 2023, doi: https://doi.org/10.1016/j.csite.2023.102864.
[14]A. Elkhatat and S. Al-Muhtaseb, "Climate Change and Energy Security: A Comparative Analysis of the Role of Energy Policies in Advancing Environmental Sustainability," Energies, vol. 17, no. 13, doi: 10.3390/en17133179.
[15]X. Li et al., "Artificial intelligence application for assessment/optimization of a cost-efficient energy system: Double-flash geothermal scheme tailored combined heat/power plant," Energy, vol. 313, p. 133594, 2024/12/30/ 2024, doi: https://doi.org/10.1016/j.energy.2024.133594.
[16]S. E. Razavi and T. Adibi, "Simulation of fluid flow in a counter-flow heat exchanger with partly elastic intermediate walls," (in en), Computational Sciences and Engineering, 2026, doi: 10.22124/cse.2026.32640.1149.
[17]T. Adibi, N. M. Maleki, E. Tavousi, and A. Keshmiri, "Enhancing the heat transfer efficiency in heated tube with a novel multi-twisted blade Turbulators: A numerical analysis," International Communications in Heat and Mass Transfer, vol. 169, p. 109717, 2025/12/01/ 2025, doi: https://doi.org/10.1016/j.icheatmasstransfer.2025.109717.
[18]M. I. Afridi, S. Pourahmad, N. M. Maleki, E. Tavousi, A. Rahbari, T. Adibi, and M. Sharifpur, "Experimental examination of thermohydraulic characteristics of a new vibrating rubber tube turbulator with multiple air bubble outlets inserted inside a double-pipe heat exchanger," International Communications in Heat and Mass Transfer, vol. 172, p. 110509, 2026/03/01/ 2026, doi: https://doi.org/10.1016/j.icheatmasstransfer.2026.110509.
[19]Ralph L. Webb and N.-H. Kim, Principles of Enhanced Heat Transfer. 2007, p. 818.
[20]F. Moghanlou, A. Shams Khorrami, E. Esmaeilzadeh, and H. Aminfar, "Experimental study on electrohydrodynamically induced heat transfer enhancement in a minichannel," Exp. Therm. Fluid Sci., vol. 59, pp. 24–31, 11/01 2014, doi: 10.1016/j.expthermflusci.2014.07.019.
[21]Z. Esmaeili, M. Sheikholeslami, F. Salehi, and H. A. Mohammed, "Simulation of a solar thermal system with a parabolic concentrator incorporating an evacuated tube system equipped with a new designed turbulator and hybrid nanofluid," Renewable Energy, vol. 237, p. 121633, 2024/12/01/ 2024, doi: https://doi.org/10.1016/j.renene.2024.121633.
[22]M. Sakkaki, F. Moghanlou, S. Parvizi, H. Baghbanijavid, A. Babapoor, and M. Shahedi Asl, "Phase change materials as quenching media for heat treatment of 42CrMo4 steels," J. Cent. South Univ., vol. 27, pp. 752-761, 02/01 2020, doi: 10.1007/s11771-020-4328-8.
[23]Y. K. Dossumbekov, N. Zhakiyev, M. A. Nazari, M. Salem, and B. Abdikadyr, "Sensitivity analysis and performance prediction of a micro plate heat exchanger by use of intelligent approaches," International Journal of Thermofluids, vol. 22, p. 100601, 2024/05/01/ 2024, doi: https://doi.org/10.1016/j.ijft.2024.100601.
[24]R. Li, P. Zhai, J. Li, and X. Liu, "Experimental study and performance enhancement of a novel micro heat pipe photovoltaic/thermal system in a cold region," Applied Thermal Engineering, vol. 248, p. 123336, 2024/07/01/ 2024, doi: https://doi.org/10.1016/j.applthermaleng.2024.123336.
[25]M. Moravej, "Efficiency enhancement in a triangular solar flat plate collector by using Al2O3-water nanofluids: An experimental study," (in en), Challenges in Nano and Micro Scale Science and Technology, vol. 8, no. 2, pp. 99-108, 2020, doi: 10.22111/tpnms.2020.35575.1197.
[26]D. Lahmer, N. Benamara, H. Ahmad, H. Ameur, and A. Boulenouar, "Combination of the Parallel/Counter Flows Nanofluid Techniques to Improve the Performances of Double-Tube Thermal Exchangers," Arabian Journal for Science and Engineering, vol. 47, no. 6, pp. 7789-7796, 2022/06/01 2022, doi: 10.1007/s13369-022-06670-3.
[27]N. S. Pandya, H. Shah, M. Molana, and A. K. Tiwari, "Heat transfer enhancement with nanofluids in plate heat exchangers: A comprehensive review," European Journal of Mechanics - B/Fluids, vol. 81, pp. 173-190, 2020/05/01/2020, doi: https://doi.org/10.1016/j.euromechflu.2020.02.004.
[28]R. P. Sharma, P. K. Pattnaik, S. R. Mishra, S. Tinker, and S. R. Allipudi, "Enhancing heat transfer on the free convection of conducting hybrid nanofluid through stretching/shrinking surface," Pramana, vol. 98, no. 3, p. 96, 2024/07/11 2024, doi: 10.1007/s12043-024-02762-x.
[29]C. M. Mohana and B. R. Kumar, "Numerical and semi-analytical approaches for heat transfer analysis of ternary hybrid nanofluid flow: A comparative study," Mathematics and Computers in Simulation, vol. 226, pp. 66-90, 2024/12/01/ 2024, doi: https://doi.org/10.1016/j.matcom.2024.06.019.
[30]P. Shahmohammadi and H. Beiki, "A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger," (in en), Challenges in Nano and Micro Scale Science and Technology, vol. 4, no. 1, pp. 29-35, 2016, doi: 10.7508/tpnms.2016.01.004.
[31]B. Raei, F. Shahraki, M. Jamialahmadi, and S. M. Peyghambarzadeh, "Experimental investigation on the heat transfer performance and pressure drop characteristics of γ-Al2O3/water nanofluid in a double tube counter flow heat exchanger," (in en), Challenges in Nano and Micro Scale Science and Technology, vol. 5, no. 1, pp. 64-75, 2016, doi: 10.7508/tpnms.2017.01.007.
[32]A. J. Chorin, "A Numerical Method for Solving Incompressible Viscous Flow Problems," Journal of Computational Physics, vol. 135, no. 2, pp. 118-125, 8// 1997, doi: http://dx.doi.org/10.1006/jcph.1997.5716.
[33]T. Adibi and S. E. Razavi, "A new characteristic approach for incompressible thermo-flow in Cartesian and non-Cartesian grids," International Journal for Numerical Methods in Fluids, vol. 79, no. 8, pp. 371-393, 2015, doi: 10.1002/fld.4053.
[34]S. E. Razavi and T. Adibi, "A novel multidimensional characteristic modeling of incompressible convective heat transfer," J APPL FLUID MECH, vol. 9, no. 4, 2016 2016.
[35]T. Adibi, "Three-dimensional characteristic approach for incompressible thermo-flows and influence of artificial compressibility parameter," (in en), Journal of Computational & Applied Research in Mechanical Engineering (JCARME), vol. 8, no. 2, pp. 223-234, 02/01 2019, doi: 10.22061/jcarme.2018.2032.1178.
[36]M. Sabour, M. Ghalambaz, and A. Chamkha, "Natural convection of nanofluids in a cavity: criteria for enhancement of nanofluids," INT. J. NUMER. METHOD H., vol. 27, no. 7, pp. 1504-1534, 2017, doi: doi:10.1108/HFF-12-2015-0516.
[37]C. Borgnakke and R. E. Sonntag, "Fundamentals of Thermodynamics," Don Fowley, 2015.
[38]T. Adibi, O. Adibi, and S. E. Razavi, "A Characteristic-based Solution of Forced and Free Convection in Closed Domains with Emphasis on Various Fluids," (in en), International Journal of Engineering, vol. 32, no. 11, pp. 1689-1695, 2019, doi: 10.5829/ije.2019.32.11b.20.
[39]T. Adibi, Adibi, O. , "Laminar forced convection simulation at different boundary conditions with averaging scheme (numerical and theoretical research," Mathematical Modelling of Engineering Problems, vol. 6, no. 4, pp. 519-526, 2019, doi: https://doi.org/10.18280/mmep.060406
[40]M. Muthtamilselvan, P. Kandaswamy, and J. Lee, "Heat transfer enhancement of copper-water nanofluids in a lid-driven enclosure," Comm. Nonlinear Sci. Numer. Simulat., vol. 15, no. 6, pp. 1501-1510, 2010/06/01/ 2010, doi: https://doi.org/10.1016/j.cnsns.2009.06.015.
[41]T. Adibi, S. E. Razavi, S. F. Ahmed, A. Alsharifi, N. A. Shah, and H. Alotaibi, "Optimising heat exchanger efficiency through elastic vortex generators and oscillating walls in pulsating channel flows," International Journal of Ambient Energy, vol. 46, no. 1, p. 2529840, 2025/12/31 2025, doi: 10.1080/01430750.2025.2529840. | ||
|
آمار تعداد مشاهده مقاله: 135 تعداد دریافت فایل اصل مقاله: 128 |
||