Turbulent Forced Convection Flow in a Channel over Periodic Grooves Using Nanofluids

Authors: Farshid Fathinia, Mohammad Parsazadeh, Amirhossein Heshmati

Abstract:

Turbulent forced convection flow in a 2-dimensional channel over periodic grooves is numerically investigated. Finite volume method is used to study the effect of turbulence model. The range of Reynolds number varied from 10000 to 30000 for the ribheight to channel-height ratio (B/H) of 2. The downstream wall is heated by a uniform heat flux while the upstream wall is insulated. The investigation is analyzed with different types of nanoparticles such as SiO2, Al2O3, and ZnO, with water as a base fluid are used. The volume fraction is varied from 1% to 4% and the nanoparticle diameter is utilized between 20nm to 50nm. The results revealed 114% heat transfer enhancement compared to the water in a grooved channel by using SiO2 nanoparticle with volume fraction and nanoparticle diameter of 4% and 20nm respectively.

Keywords: Forced convection, Periodic grooves, Nanofluids, Turbulent model, Heat transfer.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077391

References:

[1] Ankit Kumar, A.K.D., Effect of a circular cylinder on separated forced convection at a backward-facing step. International Journal of Thermal Sciences,Vol. 52, p. 9, 2012.
[2] S.Eiamsa-ard ,P.Promvonge, Numerical study on heat transfer of turbulent channel flow over periodic grooves. International Communications in Heat and Mass Transfer, 35, pp. 844-852, 2008.
[3] T.Adachia, Y.Tashiroa, H.Arimab, Y.Ikegami(2009), Pressure drop characteristics of flow in a symmetric channel with periodically expanded grooves, Chemical Engineering Science, vol.64, pp. 593ÔÇö 597, 2009.
[4] T.Adachi, H.Uehara , Correlation between heat transfer and pressure drop in channels with periodically grooved parts, International Journal of Heat and Mass Transfer, vol. 44, 2001.
[5] S.Eiamsa-ard, P.Promvonge, Thermal characteristics of turbulent ribgrooved channel flows, International Communications in Heat and Mass Transfer, vol. 36, pp. 705-711, 2009.
[6] J R. Kamali ,A.R. Binesh, The importance of rib shape effects on the local heat transfer and flow friction characteristics of square ducts with ribbed internal surfaces, International Communications in Heat and Mass Transfer, vol. 35, pp. 1032-1040, 2008.
[7] H.Shokouhmand ,K.Vahidkhah, M.A.Esmaeili, Numerical Analysis of Air Flow and Conjugated Heat Transfer in Internally Grooved Parallel- Plate Channels, World Academy of Science, Engineering and Technology, vol. 73, 2011.
[8] M.Greiner, F,Fischer,M.Tufo, Two-Dimensional Simulations of Enhanced Heat Transfer in an Intermittently Grooved Channel, Journal of Heat Transfer, Vol. 124, June 2002.
[9] M C. Herman, E. Kang , Comparative evaluation of three heat transfer enhancement strategies in a grooved channel, Heat and Mass Transfer, vol. 37 , pp.563-575, 2001.
[10] L.Ortiz, A. Hernandez-Guerrero, C. Rubio-Arana, R. Romero-Mendez, Heat transfer enhancement in a horizontal channel by the addition of curved deflectors, International Journal of Heat and Mass Transfer, vol. 51, pp. 3972-3984, 2008.
[11] Oronzio Manca, S.N., Daniele Ricci, A numerical study of nanofluid forced convection in ribbed channels. Applied Thermal Engineering,vol. 37, pp. 280-292, 2012.
[12] A.A. Al-aswadi, H.A.M., N.H. Shuaib, Antonio Campo, Laminar forced convection flow over a backward facing step using nanofluids. International Communications in Heat and Mass Transfer, vol 37, 2010.
[13] S. A. Sh. Kherbeet , H.A.M., B.H. Salman, The effect of nanofluids flow on mixed convection heat transfer over microscale backward-facing step. International Journal of Heat and Mass Transfer, 2012.