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Heat Transfer Analysis of Nanofluid Flow on Elliptical Tube Bundle with Different Attack Angles | ||
| Journal of Heat and Mass Transfer Research | ||
| دوره 10، شماره 1 - شماره پیاپی 19، مرداد 2023، صفحه 51-66 اصل مقاله (2.89 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2023.29900.1421 | ||
| نویسندگان | ||
| Amin Hosseini؛ Seyed Abbas Sadatsakkak* ؛ Ali Rajabpour | ||
| Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran | ||
| تاریخ دریافت: 01 اسفند 1401، تاریخ بازنگری: 17 تیر 1402، تاریخ پذیرش: 03 مرداد 1402 | ||
| چکیده | ||
| Flow of aluminum oxide/water nanofluid is numerically investigated in a heat exchanger at different densities of solid nanoparticles and Reynolds numbers. The behavior of heat transfer in laminar flow of single-phase nanofluid are explored at various volume fractions of oxide aluminum (0%, 2%, 4%, 6%) and Reynolds numbers (5, 15, 25, and 40) using a finite volume method. The main purpose is to study the flow behavior of nanofluid and its heat transfer in a shell and tube heat exchanger with tube banks of the elliptical cross-section with different angles of attack. The results of this study indicate that an increase in the velocity of flow enhances the heat transfer coefficient, resulting in a more uniform temperature distribution. In addition, increase of angle of attack leads to a higher velocity of the fluid flow between the tubes. At higher Reynolds numbers, more remarkable entropy reduction is observed with increasing nanoparticle volume fraction. Depending on its volume fraction, addition of solid nanoparticles at a constant Reynolds number amplifies the flow velocity components and reduces the temperature gradient. The Nusselt number can increase up to 17% in Reynolds number of 5 for all tube banks depending on the volume fraction and angle of attack, which is up to 23% for Re = 40. Therefore, the amount of shell-side friction coefficient increases by 25 to 35% for Re = 5 to 40. For all designs, the increase in the friction coefficient due to angle of attack is less important than the variations of nanofluid volume fractions. | ||
| کلیدواژه‌ها | ||
| Shell and tube heat exchanger؛ Numerical solution؛ Nanofluid؛ Elliptic tube bank؛ Angle of attack | ||
| عنوان مقاله [English] | ||
| تحلیل انتقال حرارت جریان نانوسیال بر روی دسته لوله با مقطع بیضی شکل در زوایای حمله مختلف | ||
| چکیده [English] | ||
| در این مطالعه، جریان نانوسیال اکسید آلومینیوم/آب به صورت عددی در یک مبدل حرارتی در چگالی‌های مختلف نانوذرات جامد و اعداد رینولدز بررسی می‌شود. هدف اصلی بررسی رفتار جریان نانوسیال و انتقال حرارت در یک مبدل حرارتی پوسته و لوله با لوله هایی با سطح مقطع بیضوی در زوایای حمله مختلف است. نتایج این مطالعه نشان می دهد که افزایش سرعت جریان به دلیل افزایش عدد رینولدز باعث افزایش ضریب انتقال حرارت و در نتیجه توزیع یکنواخت تر دما می شود. علاوه بر این، افزایش زاویه حمله منجر به سرعت بالاتر جریان سیال بین لوله ها می شود. بسته به کسر حجمی آن، افزودن نانوذرات جامد با عدد رینولدز ثابت، مولفه‌های سرعت جریان را تقویت می‌کند و باعث کاهش بیشتر گرادیان دما می‌شود. در همین حال، در اعداد رینولدز بالاتر، کاهش آنتروپی قابل‌توجهی با افزایش چگالی نانوذرات مشاهده می‌شود. در نهایت وجود نانوذرات جامد، عدد رینولدز و زاویه حمله سه پارامتر موثر برای میزان شار حرارتی به بانک‌های لوله هستند. عدد ناسلت می تواند تا 17% در عدد رینولدز 5 برای همه بانک های لوله بسته به کسر حجمی نانوسیال و زاویه حمله افزایش یابد. این مقدار در رینولدز 40 به 23% میرسد. علاوه بر آن مقدار ضریب اصطکاک سمت پوسته نیز از 25 تا 35 درصد برای رینولدزهای 5 و 40 افزایش می یابد. تغییر زاویه حمله (برای همه طرح‌ها در کسرهای حجمی مختلف) نسبت به تغییرات کسر حجمی نانوسیال تاثیر کمتری در افزایش ضریب اصطکاک دارد. | ||
| کلیدواژه‌ها [English] | ||
| مبدل حرارتی پوسته ولوله, شبیه سازی عددی, نانوسیال, دسته لوله بیضی شکل, زاویه حمله | ||
| مراجع | ||
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[1] Bahiraei, M., Rahmani, R., Yaghoobi, A., Khodabandeh, E., Mashayekhi, R., Amani, M., 2018. Recent research contributions concerning use of nanofluids in heat exchangers: A critical review. Applied Thermal Engineering, doi: https: //doi.org/10.1016/j. applthermaleng. 2018.01.041. [2] Khanmohammadi, S., Rahimi, Z., Khanmohammadi, S., & Afrand, M., 2019. Triple-objective optimization of a double-tube heat exchanger with elliptic cross section in the presence TiO2 nanofluid, Journal of Thermal Analysis and Calorimetry. doi.org/10.1007/s10973-019-08744-1.
[3] Tang, S. Z., Wang, F. L., He, Y. L., Yu, Y., and Tong, Z. X., 2019. Parametric optimization of H-type finned tube with longitudinal vortex generators by response surface model and genetic algorithm, Applied Energy, 239, 908–918.
[4] Zhao, L., Wang, B., Wang, R., and Yang, Z, 2019. Aero-thermal behavior and performance optimization of rectangular finned elliptical heat exchangers with different tube arrangements, International Journal of Heat and Mass Transfer. 133, 1196–1218.
[5] Deepakkumar, R., and Jayavel, S., 2017, Air side performance of finned-tube heat exchanger with combination of circular and elliptical tubes, Applied Thermal Engineering, 119, 360–372.
[6] Saffarian, M.R., Fazelpour, F. & Sham, M., 2019. Numerical study of shell and tube heat exchanger with different cross-section tubes and combined tubes. Int J Energy Environ Eng, 10, 33–46. https://doi.org/10.1007/s40095-019-0297-9.
[7] Mangrulkar, C.K., Dhoble, A.S., Deshmukh, A.R., 2016. Mandavgane, S.A., Numerical investigation of heat transfer and friction factor characteristics from in-line cam shaped tube bank in crossflow, Applied Thermal Engineering, doi:/10.1016/j.applthermaleng.2016.08.174.
[8] Wu, C. C., Chen, C. K., Yang, Y. T., and Huang, K. H., 2018. Numerical simulation of turbulent flow forced convection in a twisted elliptical tube, International Journal of Thermal Sciences, 132, 199–208.
[9] Etaig, S., Gamal., H., 2018. Numerical Investigation on the Laminar Flow in a Vertical Pipe with Elliptic Cross Section, International Journal of Science and Research (IJSR). 9(1), 1588-1592.
[10] Lu, G., and Zhai, X., 2018. Analysis on heat transfer and pressure drop of fin-and-oval-tube heat exchangers with tear-drop delta vortex generators, International Journal of Heat and Mass Transfer, 127, 1054–1063.
[11] Akbari, O.A., Goodarzi, M., Safaei, M. R., zarringhalam, M., Ahmadi Sheikh Shabani, G. A., and Dahari, M., 2016. A Modified Two-Phase Mixture Model of Nanofluid flow and Heat Transfer in 3-D Curved Microtube, Advanced Powder Technology, 27(5), 2175-2185.
[12] Mousavi, S.M., Akbari, O.A., Sheikhzadeh, Gh., Marzban, A., Toghraie, D., Chamkha, A.J., 2020. Two-phase modeling of nanofluid forced convection in different arrangements of elliptical tube banks, International Journal of Numerical Methods for Heat & Fluid Flow, 30(4), 1937-1966.
[13] Liu, H. L., Fan, C. C., He, Y. L., and Nobes, D.S., 2019. Heat transfer and flow characteristics in a rectangular channel with combined delta winglet inserts, International Journal of Heat and Mass Transfer, 134, 149–165.
[14] Mangrulkar, C. K., Dhoble, A. S., Chakrabarty, S. G., and Wankhede, U. S., 2017. Experimental and CFD prediction of heat transfer and friction factor haracteristics in cross flow tube bank with integral splitter plate, International Journal of Heat and Mass Transfer, 104, 964–978.
[15] Abbasian Arani, A. A., Uosofvand, H., 2021. Double-pass shell-and-tube heat exchanger performance enhancement with new combined baffle and elliptical tube bundle arrangement, International Journal of Thermal Sciences, 167, 1145-1150.
[16] Pourfattah, F., Motamedian, M., Sheikhzadeh, G. A., Toghraie, D., and Akbari, O. A., 2017. The numerical investigation of angle of attack of inclined rectangular rib on the turbulent heat transfer of Water-Al2O3 nanofluid in a tube, International Journal of Mechanical Sciences, 131–132, 1106-1116.
[17] Jaferian, V., Toghraie, D., Pourfattah, F., Akbari, O. A., Talebizadehsardari, P., 2020. Numerical investigation of the effect of water/Al2O3 nanofluid on heat transfer in trapezoidal, sinusoidal and stepped microchannels, International Journal of Numerical Methods for Heat & Fluid Flow, 30 (5), 2439-2465.
[18] Yousefzadeh, S., Esmaeili, S., Eivazkhani, B., Akbari, O. A., Montazerifar, F., Toghraie, D., 2022. Numerical study of natural convection of nanofluid in a rectangular closed enclosure (RCE) affected by hot and cold flow in a two-layer microchannel. J Braz. Soc. Mech. Sci. Eng, 44, 197. https://doi.org/10.1007/s40430-022-03499-7.
[19] Fakour, M., Vahabzadeh, A., Ganji, D. D., 2015. Study of heat transfer and flow of nanofluid in permeable channel in the presence of magnetic field, Propulsion and Power Research. 4 (1), 50–62.
[20] Pak, B.C., and Cho, Y, I., 1998. Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles, Exp Heat Transfer, 11, 151–170.
[21] Brinkman, H. C., 1952. The viscosity of concentrated suspensions and solutions, J. Chem. Phys, 20, 571–581.
[22] Xuan, Y., Roetzel, W., 2000. Conceptions for heat transfer correlation of nanofluids, Int J. Heat Mass Transfer, 43, 3701–3707.
[23] Patel, H. E., Sundararajan, T., Pradeep, T., Dasgupta, A., Dasgupta, N., Das, S. K,. 2005. A micro-convection model for thermal conductivity of nanofluids. Pramana J Phys, 65(5), 863–869.
[24] Vanaki, S. M., Ganesan, P., Mohammed, H.A., 2016. Numerical study of convective heat transfer of nanofluids: a review, Renew Sustain Energy Rev. 54, 1212–39.
[25] Nimmagadda, R., Venkatasubbaiah, K., 2015. Conjugate heat transfer analysis of micro-channel using novel hybrid nanofluids (Al2O3+Ag/water). Eur J Mech B Fluids, 52,19–27.
[26] Pourfattah, F., Akbari, O. A., Jafrian, V., Toghraie, D., & Pourfattah, E., 2019. Numerical simulation of turbulent flow and forced heat transfer of water/CuO nanofluid inside a horizontal dimpled fin. Journal of Thermal Analysis and Calorimetry. doi:10.1007/s10973-019-08752-1.
[27] Zhang, H., Nie, X., Bokov, D. O., Toghraie, D., Akbari, O. A., Montazerifar, F., Pourfattah F., Esmaeili, Y., Khodaparast, R., 2022. Numerical study of mixed convection and entropy generation of Water-Ag nanofluid filled semi-elliptic lid-driven cavity, Alexandria Engineering Journal, 61(12), 11019-11030.
[28] Zhou, X. R., Wang, Y., Zheng, K and Huang, H., 2019. Comparison of heat transfer performance of ZnO-PG, a-Al2O3-PG, and g-Al2O3-PG nanofluids in car radiator, Nanomaterials and Nanotechnology, 9, 1–12.
[29] Tavakoli, M. R., Akbari, O. A., Mohammadian, A., Khodabandeh, E., Pourfattah, F., 2019. Numerical study of mixed convection heat transfer inside a vertical microchannel with two-phase approach, Journal of Thermal Analysis and Calorimetry, 135 (2), 1119-1134.
[30] Ebrahimi, D., Yousefzadeh, Sh., Akbari, O. A., 2021. Montazerifar, F., Rozati, S. A., Nakhjavani, Sh., Safaei, M.R., Mixed convection heat transfer of a nanofluid in a closed elbow-shaped cavity (CESC), Journal of Thermal Analysis and Calorimetry, 144 (6), 2295-2316.
[31] Sarlak, R., Abed, A. M., Akbari, O. A., Marzban, A., Baghaei, Sh., Bayat, M., 2023. Numerical investigation of natural convection heat transfer of water/SWCNT nanofluid flow in a triangular cavity with cold fluid injection, Progress in Nuclear Energy, 155, 104513.
[32] Mir, S., Abed, A. M., Akbari, O. A., Mohammadian, A., Toghraie, D., Marzban, A., Mir, S., Montazerifar, F., Bemani, R., Smaisim, Gh. F., 2022, Effects of curvature existence, adding of nanoparticles and changing the circular minichannel shape on behavior of two-phase laminar mixed convection of Ag/water nanofluid, Alexandria Eng. J., https://doi.org/10.1016/j.aej.2022.10.059.
[33] Akcay, S., Akdag, U., 2022. Numerical analysis of thermal and hydraulic performance of pulsating nanofluid flow over cam-shaped tube bundles. Iranian Journal of Science and Technology Transactions of Mechanical Engineering, https://doi.org/10.1007/s40997-022-00572-3.
[34] Toolthaisong, S,. Kasayapanand, N., 2013. Effect of attack angles on air side thermal and pressure drop of the crossflow heat exchangers with staggered tube arrangement. Energy Procedia, 34, 417–29. https://doi:10.1016/j.egypro.2013.06. 770.
[35] Salehi Afshar, K., Mirabdolah Lavasani, A., Abolfathi, S., Mobedi, P., 2022. The angle of attack effect on thermal-hydraulic performance of a cam-shaped tube with constant heat flux in crossflow. Experimental Heat Transfer, 10. http://doi.org/10.1080/08916152.2022.2059595. | ||
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