Thermal Performance of Oscillating Blade with Various ‎Geometries in a Straight Channel

Document Type : Research Paper

Authors

1 Department of Mechanical Engineering, Persian Gulf University, Bushehr 75169, Iran

2 South Pars Gas Company, Bushehr 75391/311, Iran‎

3 Department of Mechanical Engineering, Tafresh University, Tafresh 39518-79611, Iran‎

4 Department of Mechanical Engineering, Persian Gulf University, Bushehr 75169, Iran‎

Abstract

In this study, the effect of stationary and oscillating blades on the forced convection heat transfer in a channel is studied numerically. Simulations are performed in a fully-developed, laminar, unsteady, and incompressible flow with Reynolds number and Prandtl number equal to 100 and 1, respectively. The effects of the blade geometry, oscillating speed and oscillation angle on heat transfer and pressure drop are studied. The results are presented in terms of time-averaged Nusselt number, temperature, and vorticity distribution and the pressure drop. The results indicate that the oscillation angle, oscillating speed of the blade, and the number of the blades, affect the thermal performance of the channel. In most cases, it is observed that the effect of the oscillation angle is more than that for the oscillating speed on heat transfer enhancement. However, increasing the number of blades does not necessarily help to enhance the heat transfer, but it can slightly decrease the pressure drop.

Keywords

Main Subjects

Publisher’s Note Shahid Chamran University of Ahvaz remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

[1] Ali M.M., Alim M.A., Ahmed S.S., Oriented magnetic field effect on mixed convective flow of nanofluid in a grooved channel with internal rotating cylindrical heat source, International Journal of Mechanical Sciences, 151, 2019, 385-409.
[2] Yang Y., Li H., Yao M., Gao W., Zhang Y., Zhang L., Investigation on the effects of narrowed channel cross-sections on the heat transfer performance of a wavy-channeled PCHE, International Journal of Heat and Mass Transfer, 135, 2019, 33-43.
[3] Gustafsson A., Analysis of Vortex-Induced Vibrations of Risers, Master’s thesis, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg, Sweden, 2012.
[4] Munish G., Kasana S.K., Vasudevan R., Heat transfer augmentation in a plate–fin heat exchanger using rectangular winglet, Journal of Heat Transfer—Asian Research, 39(8), 2010, 590 – 610.
[5] Pauley W.R., Eaton J.K., The effect of embedded longitudinal vortex array on turbulent boundary layer heat transfer, Journal of Heat Transfer, 116, 1994, 871–885.
[6] Amini Y., Akhavan S., Izadpanah E., A numerical investigation on the heat transfer characteristics of nanofluid flow in a three-dimensional microchannel with harmonic rotating vortex generators, Journal of Thermal Analysis and Calorimetry, 139, 2020, 755-764.
[7] Mohammadshahi S., Nili-Ahmadabadi M., Samsam-Khayani H., Salimpour M.R., Numerical study of a vortex-induced vibration technique for passive heat transfer enhancement in internal turbulent flow, European Journal of Mechanics / B Fluids, 72, 2018, 103–113.
[8] Hekmat M.H., Ziarati K.K., Effects of nanoparticles volume fraction and magnetic field gradient on the mixed convection of a ferrofluid in the annulus between vertical concentric cylinders, Applied Thermal Engineering, 152, 2019, 844-857.
[9] Hekmat M. H., Rabiee M. B., Ziarati K. K., Numerical investigation of the mixed convection of a magnetic nanofluid in an annulus between two vertical concentric cylinders under the influence of a non-uniform external magnetic field, Journal of Thermal Analysis and Calorimetry, 138, 2019, 1745-1759.
[10] Liang G., Mudawar I., Review of single-phase and two-phase nanofluid heat transfer in macro-channels and micro-channels, International Journal of Heat and Mass Transfer, 136, 2019, 324-354.
[11] Izadpanah E., Amini Y., Ashouri A., A comprehensive investigation of vortex induced vibration effects on the heat transfer from a circular cylinder, International Journal of Thermal Sciences, 125, 2018, 405-418.
[12] Izadpanah E., Ashouri A., Liravi M., Amini Y., Effect of vortex-induced vibration of finned cylinders on heat transfer enhancement, Physics of Fluids, 31, 2019, 073604.
[13] Amini Y., Akhavan S., Izadpanah E., Vortex-induced vibration of a cylinder in pulsating nanofluid flow, Journal of Thermal Analysis and Calorimetry, 140, 2020, 2143–2158.
[14] Khan M.I., Billah M.M., Rahman M.M., Hasan M.N., Mixed convection heat transfer simulation in a rectangular channel with a variable speed rotational cylinder, AIP Conference Proceedings, 1919(1), 2017, 020048.
[15] Esmaeilzadeh E., Alamgholilou A., Mirzaie H., Ashna M., Heat transfer enhancement in the presence of an electric field at low and intermediate Reynolds numbers, Asian Journal of Scientific Research, 1(6), 2008, 562-578.
[16] Eid E.I., Gomaa M.E., Influence of vibration in enhancement of heat transfer rates from thin plannar fins, Heat and Mass Transfer, 45, 2009, 713-726.
[17] Raguraman C.M., Ragupathy A., Ramkumar R., Sivakumar L., An effect of blade geometry on heat transfer performance in stirred vessel–coal water slurry system using coal gasification, International Journal of Engineering Science and Technology, 2, 2010, 587-594.
[18] Page L.G., Bello-Ochende T., Meyer J.P., Maximum heat transfer density rate enhancement from cylinders rotating in natural convection, International Communications in Heat and Mass Transfer, 38, 2011, 1354–1359.
[19] Beskok A., Raisee M., Celik B., Yagiz B., Cheraghi M., Heat transfer enhancement in a straight channel via a rotationally oscillating adiabatic cylinder, International Journal of Thermal Sciences, 58, 2012, 61-69.
[20] Léal L., Miscevic M., Lavieille P., Amokrane M., Pigache F., Topin F., Nogarède B., Tadrist L., An overview of heat transfer enhancement methods and new perspectives: Focus on active methods using electroactive materials, International Journal of Heat and Mass Transfer, 61, 2013, 505-524.
[21] Pourgholam M., Izadpanah E., Motamedi R., Habibi S.E., Convective heat transfer enhancement in a parallel plate channel by means of rotating or oscillating blade in the angular direction, Applied Thermal Engineering, 78, 2015, 248-257.
[22] Yeom T., Simon T.W., North M., Cui T., High-frequency translational agitation with micro pin-fin surfaces for enhancing heat transfer of forced convection, International Journal of Heat and Mass Transfer, 94, 2016, 354-365.
[23] Izadpanah E., Babaie Rabiee M., Sadeghi H., Talebi S., Effect of rotating and oscillating blade on the heat transfer enhancement of non-Newtonian fluid flow in a channel, Applied Thermal Engineering, 113, 2017, 1277-1282.
[24] Kankariya D., Briens C., Pjontek D., Tacchino S., Effects of liquid feed rate and impeller rotation speed on heat transferin a mechanically fluidized reactor, Particuology, 39, 2018, 25-32.
[25] ANSYS CFX-Solver Theory Gide, Realease 14.0, ANSYS Inc, 2013.
[26] Norberg C., Fluctuating lift on a circular cylinder: review and new measurements, Journal of Fluids and Structures, 17, 2003, 57–96.
[27] Tritton D.J., Experiments on the flow past a circular cylinder at low Reynolds numbers, Journal of Fluid Mechanics, 6, 1959, 547–567.
[28] Mahír N., Altaç Z., Numerical investigation of convective heat transfer in unsteady flow past two cylinders in tandem arrangements, International Journal of Heat and Fluid Flow, 29(5), 2008, 1309-1318.
[29] Kumar R.S., Jayavel S., Influence of flow shedding frequency on convection heat transfer from bank of circular tubes in heat exchangers under cross flow, International Journal of Heat and Mass Transfer, 105, 2017, 376-393.
[30] Knudsen J.G., Katz D.L., Fluid dynamics and heat transfer, Chem. Eng. Ser. McGraw-Hill, New York, NY, 1958.
[31] Churchill S.W., Bernstein M., A correlating equation for forced convection from gases and liquids to a circular cylinder in crossflow, Journal of Heat Transfer, 99, 1977, 300-306.
[32] Stojković D., Breuer M., Durst F., Effect of high rotation rates on the laminar flow around a circular cylinder, Physics of Fluids, 14, 2002, 3160-3178.
[33] Stojković D., Schön P., Breuer M., Durst F., On the new vortex shedding mode past a rotating circular cylinder, Physics of Fluids, 15, 2003, 1257-1260.
[34] Celik B., Raisee M., Beskok A., Heat transfer enhancement in a slot channel via a transversely oscillating adiabatic circular cylinder, International Journal of Heat and Mass Transfer, 53, 2010, 626-634.