THERMAL SCIENCE

International Scientific Journal

NUMERICAL INVESTIGATION OF HEAT TRANSFER FROM FLOW OVER SQUARE CYLINDER PLACED IN A CONFINED CHANNEL USING CU-WATER NANOFLUID

ABSTRACT
Laminar forced convection heat transfer from 2-D flow over a square cylinder placed in a confined adiabatic channel is studied numerically. The governing equations are solved using unsteady stream function-vorticity method. The effect of volume fraction of the nanoparticles are tested for different Reynolds number in laminar range. Fluid dynamics and heat transfer results were reported for steady-state condition. Local Nusselt number and average Nusselt number are reported in connection with volume fraction and Reynolds number for blockage ratio of 0.25. Square cylinder's front wall results maximum Nusselt number whereas rear wall shows smaller Nusselt number. Wall attached pair of vortices appeared rear side of cylinder for Reynolds number varying from 10 to 40 and volume fraction varies from 0.0 to 0.1. The size of symmetry vortices linearly increases when Reynolds number or volume fraction is increased. The drag coefficient is more pronounced to the variation in Reynolds number and volume fraction rather lift coefficient.
KEYWORDS
PAPER SUBMITTED: 2019-03-12
PAPER REVISED: 2019-04-27
PAPER ACCEPTED: 2019-05-19
PUBLISHED ONLINE: 2019-09-22
DOI REFERENCE: https://doi.org/10.2298/TSCI19S4367A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 4, PAGES [S1367 - S1380]
REFERENCES
  1. Okajima, A., Strouhal Numbers of Rectangular Cylinders, Journal of Fluid Mechanics, 123 (1982), Oct.,, pp. 379-398
  2. Mukhopadhyay, A., et al., Numerical Investigation of Confined Wakes Behind a Square Cylinder in a Channel, International Journal for Numerical Methods in Fluids, 14 (1992), 12, pp. 1473-1484
  3. Sohankar, A., et al., Numerical Simulation of Unsteady Low-Reynolds Number Flow Around Rectangular Cylinders at Incidence, Journal of Wind Engineering and Industrial Aerodynamics, 69-71 (1997), July-Oct., pp. 189-201
  4. Dutta, S., et al., Experimental Investigation of Flow Past a Square Cylinder at an Angle of Incidence, Journal of Engineering Mechanics, 134 (2008), 9, pp.788-803
  5. Yoon, D.-H., et al., Flow Past a Square Cylinder with an Angle of Incidence, Physics of Fluids, 22 (2010), 4, 043603
  6. Sharma, A., Eswaran, V., Heat and Fluid Flow Across a Square Cylinder in the Two-Dimensional Laminar Flow Regime, Numerical Heat Transfer, 45 (2004), 3, pp. 247-269
  7. Mohammed, H. A., et al., Convective Heat Transfer and Fluid Flow Study over a Step Using Nanofluids: A Review, Renewable and Sustainable Energy Reviews, 15 (2011), 6, pp. 2921-2939
  8. Kakac, S., Pramuanjaroenkij, A., Review of Convective Heat Transfer Enhancement with Nanofluids, Int. J. Heat Mass Transfer, 52 (2009), 13-14, pp. 3187-3196
  9. Chandrasekar, M., Suresh, S., A Review on the Mechanisms of Heat Transport in Nanofluids, Heat Transfer Eng. 30 (2009), 14, pp. 1136-1150
  10. Abu-Nada, E., Applicationof Nanofluids for Heat Transfer Enhancement of Separated Flows Encountered in a Backward Facing Step, Int. Journal of Heat and Fluid Flow, 29 (2008), 1, pp. 242-249
  11. Al-Aswadi, A., et al., Laminar Forced Convection Flow over a Backward Facing Step Using Nanofluids, International Communications in Heat and Mass Transfer, 37 (2010),8, pp. 950-957
  12. Mohammed, H., et al., Influence of Nanofluids on Mixed Convective Heat Transfer over a Horizontal Backward Facing Step, Heat Transfer-Asian Research, 40 (2011), 4, pp. 480-495
  13. Chandrasekar, M., Suresh, S., Numerical Study of Laminar Mixed Convection of a Nanofluid in Horizontal Curved Tubes, Applied Thermal Engineering, 27 (2007), 8-9, pp. 1327-1337
  14. Hwang, K. S., et al., Flow and Convective Heat Transfer Characteristics of Water-Based Al2O3 Nanofluids in Fully Developed Laminar Flow Regime, International Journal of Heat and Mass Transfer, 52 (2009), 1-2, pp. 193-199
  15. Apurba, K. S., et al., Study of Heat Transfer Due to Laminar Flow of Copper Water Nanofluid Through Two Isothermally Heated Parallel Plates, Int. J. Thermal Sciences, 48 (2009), 2, pp. 391-400
  16. Prasenjit, D., Das, A. K.,Analysis of Fluid Flow and Heat Transfer Characteristics Over a Square Cylinder: Effect of Corner Radius and NanofluidVolume Fraction, Arabian Journal for Science and Engineering, 42 (2017), 5, pp. 1687-1698
  17. Derouich, Y., et al., Inclination Effects on Heat Transfer by an Oscillating Square Cylinderin Channel Flow, International Journal of Heat and Mass Transfer, 125 (2018), Oct., pp. 1105-1120
  18. Brinkman, H., The Viscosity of Concentrated Suspensions and Solutions, J. Chem. Phys., 20 (1952), 4, pp. 571-581
  19. Tiwari, R. K., Das, M. K., Heat Transfer Augmentation in a Two-Sided Lid-Driven Differentially Heated Square Cavity Utilizing Nanofluids, International Journal of Heat and Mass Transfer, 50 (2007), 9-10, pp. 2002-2018
  20. Khanafer, K., et al., Buoyancy-Driven Heat Transfer Enhancement in a Two-Dimensional Enclosure Utilizing Nano-Fluids, International Journal of Heat and Mass Transfer, 46 (2003), 19, pp. 3639-3653
  21. Muthtamilselvan, M., et al., Heat Transfer Enhancement of Copper-Water Nanofluids in a Lid-Driven Enclosure, Communications in Nonlinear Sci Numer Simulation, 15 (2010), 6, pp. 1501-1510
  22. Christopher, D., et al., Numerical Investigation on Laminar Forced Convection Flow Due to Sudden Expansion Using Nanofluids, Numerical Heat Transfer: Part A, Applications, 61 (2012), 7, pp. 527-546
  23. Roache, P., Fundamentals of Computational Fluid Dynamics, Chapter-3, Hermosa, Socorro, N. Mex., USA, 1998
  24. Das, M., Kanna, P., Application of an Adi Scheme for Steady and Periodic Solutions in a Lid-Driven Cavity Problem, International Journal of Numerical Methods for Heat & Fluid Flow, 17 (2007), 8, pp. 799-822
  25. Breuer, M., et al., Accurate Computations of the Laminar Flow Past a Square Cylinder Based on Two Different Methods: Lattice-Boltzmann and Finite-Volume, International Journal of Heat and Fluid Flow, 21 (2000), 2, pp. 186-196
  26. Mohammad Rahnama, Hakimeh Hadi-Moghaddam, Numerical Investigation of Convective Heat Transfer in Unsteady Laminar Flow Over a Square Cylinder in a Channel, Heat Transfer Engineering, 26 (2005), 10, pp. 21-29
  27. Christopher, D. G., et al., Numerical Investigation of Heat Transfer from Two-Dimensional Sudden Expansion Flow Using Nanofluids, Journal of Computational and Theoretical, 61 (2012), 7, pp. 2217-2227

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence