NUMERICAL INVESTIGATION OF COOLING A RIBBED MICROCHANNEL USING NANOFLUID

Yıl 2018, Cilt: 4 Sayı: 6, 2408 - 2422, 29.09.2018

Khadija Madani

https://doi.org/10.18186/thermal.465650

Cited By: 6

Öz

A 2-D numerical investigation was carried out to study
the effect of spacing between ribs on nanofluid flow and heat transfer inside a horizontal micro-channel. Two
identical ribs were placed at the lower wall of micro-channel with variable
spacing between them. The alumina oxide nanoparticles was suspended in water as
based fluid at different volume fraction 0, 2 and 4%. The finite volume method
was used to solve the continuity, momentum and energy equations. The effects of
different parameters such as nanoparticles volume fraction, Reynolds number,
and the spacing between ribs has been evaluated. The results showed that increasing nanoparticles volume fraction and
Reynolds number significantly enhanced the heat transfer and the Poiseuille
number. The presence of ribs improves the heat
transfer. However, increasing the spacing between ribs leads to decrease the
heat transfer rate.   

Anahtar Kelimeler

Forced Convection, Heat Transfer Coefficient, Nanofluids, Ribs

Kaynakça

• [1] Bergles, A. E. (1988). Some perspectives on enhanced heat transfer—second-generation heat transfer technology. Journal of Heat Transfer, 110(4b), 1082-1096.
• [2] Tuckerman, D. B., & Pease, R. F. W. (1981). High-performance heat sinking for VLSI. IEEE Electron device letters, 2(5), 126-129.
• [3] Choi, S. U. S., & Estman, J. A. (1995). Enhancing thermal conductivity of fluids with nanoparticles. ASME-Publications-Fed, 231, 99-106.
• [4] Yoo, D. H., Hong, K. S., & Yang, H. S. (2007). Study of thermal conductivity of nanofluids for the application of heat transfer fluids. Thermochimica Acta, 455(1-2), 66-69.
• [5] Choi, S. U. S., Zhang, Z. G., Yu, W., Lockwood, F. E., & Grulke, E. A. (2001). Anomalous thermal conductivity enhancement in nanotube suspensions. Applied physics letters, 79(14), 2252-2254.
• [6] Hamilton, R. L., & Crosser, O. K. (1962). Thermal conductivity of heterogeneous two-component systems. Industrial & Engineering Chemistry Fundamentals, 1(3), 187-191.
• [7] Murshed, S. M. S., Leong, K. C., & Yang, C. (2005). Enhanced thermal conductivity of TiO2—water based nanofluids. International Journal of thermal sciences, 44(4), 367-373.
• [8] Ansari, D., Husain, A., & Kim, K. Y. (2010). Multiobjective optimization of a grooved micro-channel heat sink. IEEE transactions on components and packaging technologies, 33(4), 767-776.
• [9] Ghale, Z. Y., Haghshenasfard, M., & Esfahany, M. N. (2015). Investigation of nanofluids heat transfer in a ribbed microchannel heat sink using single-phase and multiphase CFD models. International Communications in Heat and Mass Transfer, 68, 122-129.
• [10] Huh, M., Liu, Y. H., & Han, J. C. (2009). Effect of rib height on heat transfer in a two pass rectangular channel (AR= 1: 4) with a sharp entrance at high rotation numbers. International Journal of Heat and Mass Transfer, 52(19-20), 4635-4649.
• [11] Karimipour, A., Alipour, H., Akbari, O. A., Semiromi, D. T., & Esfe, M. H. (2015). Studying the effect of indentation on flow parameters and slow heat transfer of water-silver nano-fluid with varying volume fraction in a rectangular two-dimensional micro channel. Indian Journal of Science and Technology, 8(15).
• [12] Akbari, O. A., Toghraie, D., Karimipour, A., Safaei, M. R., Goodarzi, M., Alipour, H., & Dahari, M. (2016). Investigation of rib's height effect on heat transfer and flow parameters of laminar water–Al2O3 nanofluid in a rib-microchannel. Applied Mathematics and Computation, 290, 135-153.
• [13] Al-Shamani, A. N., Sopian, K., Mohammed, H. A., Mat, S., Ruslan, M. H., & Abed, A. M. (2015). Enhancement heat transfer characteristics in the channel with Trapezoidal rib–groove using nanofluids. Case Studies in Thermal Engineering, 5, 48-58.
• [14] Manca, O., Nardini, S., & Ricci, D. (2012). A numerical study of nanofluid forced convection in ribbed channels. Applied Thermal Engineering, 37, 280-292.
• [15] Wang, L., & Sundén, B. (2007). Experimental investigation of local heat transfer in a square duct with various-shaped ribs. Heat and Mass Transfer, 43(8), 759.
• [16] Andreozzi, A., Manca, O., Nardini, S., & Ricci, D. (2016). Forced convection enhancement in channels with transversal ribs and nanofluids. Applied Thermal Engineering, 98, 1044-1053.
• [17] Maiga, S. E. B., Palm, S. J., Nguyen, C. T., Roy, G., & Galanis, N. (2005). Heat transfer enhancement by using nanofluids in forced convection flows. International journal of heat and fluid flow, 26(4), 530-546.
• [18] El Bécaye Maïga, S., Tam Nguyen, C., Galanis, N., Roy, G., Maré, T., & Coqueux, M. (2006). Heat transfer enhancement in turbulent tube flow using Al2O3 nanoparticle suspension. International Journal of Numerical Methods for Heat & Fluid Flow, 16(3), 275-292.
• [19] Xuan, Y., & Roetzel, W. (2000). Conceptions for heat transfer correlation of nanofluids. International Journal of heat and Mass transfer, 43(19), 3701-3707.
• [20] Mintsa, H. A., Roy, G., Nguyen, C. T., & Doucet, D. (2009). New temperature dependent thermal conductivity data for water-based nanofluids. International Journal of Thermal Sciences, 48(2), 363-371.
• [21] Kandlikar, S., Garimella, S., Li, D., Colin, S., & King, M. R. (2005). Heat transfer and fluid flow in minichannels and microchannels. elsevier.