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Turbulent Fluid Flow and Heat Transfer through a Horizontal Rectangular Diffuser with the Use of Single and Double Baffles


Affiliations
1 Department of Computer Science and Engineering, Jadavpur University, Kolkata-700 032, India
2 Department of Mechanical Engineering, Heritage Institute of Technology, Kolkata-700107, India
3 Deputy Director of Industrial Training, West Bengal, In-Charge of Govt. ITI Howrah Homes Technical Education, Training and Skill Development Department, Govt. of West Bengal, India
4 Department of Mechanical Engineering, Jadavpur University, Kolkata-700032, India
     

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Scientists and engineers give much attention for convective fluid flow around the baffles because of its wide application in different types of heat exchangers used in industries. Analysis of the velocity profiles of the turbulent flow and convection flow parameters have been studied for a horizontal rectangular asymmetric diffuser, the bottom wall of which is being heated. Single and double baffles of equal height are used in the experiments. The experimental study has been carried out at Reynolds numbers of 3.594x104 3.986x104 and 5.371x104 with base plate temperatures of 323K and 343K respectively. Skin friction coefficient along the walls has been calculated. The variation of local Nusselt number along the upper wall is observed carefully. The effort is made to establish some new empirical relationships between Coefficient of skin friction and Nusselt number with Reynolds number The size of recirculation bubble is also calculated.

Keywords

Turbulence, Baffles, Rectangular Diffuser, Skin Friction Coefficient, Reynolds Number.
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  • Asif, M. R., Hossain, M. S. and Hossain, K. A., Heat Transfer in a Rectangular enclosure with Baffles, ARPN Journal of Engineering and Applied Sciences, Vol.6, No.4, pp.29-41, 2011.

  • Razak, A. A., Yaakob, Y. and Ramli, M. N., Computational Simulation of Turbulence Heat Transfer in Multiple Rectangular Ducts, World Academy of Science, Engineering and Technology, Vol. 53, pp.242-246, 2009.

  • Mehdi, Q. S. and Mushatet, K. S., Simulation of Turbulent Flow and Heat Transfer Through a Duct with Baffle Plates, Journal of Engineering and Development, Vol. 12, No.3, pp.142-157, 2008.

  • Dogan, M. and Sivrioglu, M., Experimental investigation of mixed convection heat transfer from longitudinal fins in a horizontal rectangular channel. International Journal of Heat and Mass Transfer, Vol. 53, pp.2149-2158, 2010.

  • El-Askary, W. A. and Abdel-Fattah, A., Experimental and Numerical Studies on Heat Transfer and Fluid Flow in a Duct Fitted with Inclined Baffles, Computer Modeling in Engineering and Sciences, Vol. 83, No.4, pp.425-457, 2012.

  • Majumder, S., Roy, D., Bhattacharjee, S. and Debnath, R., Experimental Investigation of the Turbulent Fluid Flow Through a Rectangular Diffuser Using Two Equal Baffles, Journal of Institution of Engineers (India) Ser. C, Vol. 95, No.1, pp. 19-23, 2014.

  • Bhattacharjee, S., Debnath, R., Mandal, A, Roy, D. and Majumder, S., Experimental Investigation Of Recirculatory Turbulent Flow Past Twin Obstructions Of Different Heights Placed At Different Stations Of A Rectangular Diffuser, Paper No. EM - 05, Proceedings of the 37th National & 4th International Conference on Fluid Mechanics and Fluid Power, December 16-18, IIT Madras, Chennai, India, pp.1-8, 2010.

  • Lee, J., Jung, S. Y, Sung, H. J. and Zaki, T. A., Effect of wall heating on turbulent boundary layers with temperature-dependent viscosity. Journal of Fluid Mechanics, Vol. 726, pp. 196-225, 2013.

  • Bhattacharjee, S., Mandal, A., Debnath, R., Majumder, S. and Roy, D., Effect of Bottom Wall Heating on the Turbulent Fluid Flow in an Asymmetric Rectangular Diffuser: an Experimental Study, Journal of Applied Fluid Mechanics, Vol. 9, No.6, pp. 2969-2979, 2016.


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  • Turbulent Fluid Flow and Heat Transfer through a Horizontal Rectangular Diffuser with the Use of Single and Double Baffles

Abstract Views: 122  |  PDF Views: 2

Authors

S. Bhattacharjee
Department of Computer Science and Engineering, Jadavpur University, Kolkata-700 032, India
A. Mandal
Department of Mechanical Engineering, Heritage Institute of Technology, Kolkata-700107, India
R. Debnath
Deputy Director of Industrial Training, West Bengal, In-Charge of Govt. ITI Howrah Homes Technical Education, Training and Skill Development Department, Govt. of West Bengal, India
S. Majumder
Department of Mechanical Engineering, Jadavpur University, Kolkata-700032, India

Abstract


Scientists and engineers give much attention for convective fluid flow around the baffles because of its wide application in different types of heat exchangers used in industries. Analysis of the velocity profiles of the turbulent flow and convection flow parameters have been studied for a horizontal rectangular asymmetric diffuser, the bottom wall of which is being heated. Single and double baffles of equal height are used in the experiments. The experimental study has been carried out at Reynolds numbers of 3.594x104 3.986x104 and 5.371x104 with base plate temperatures of 323K and 343K respectively. Skin friction coefficient along the walls has been calculated. The variation of local Nusselt number along the upper wall is observed carefully. The effort is made to establish some new empirical relationships between Coefficient of skin friction and Nusselt number with Reynolds number The size of recirculation bubble is also calculated.

Keywords


Turbulence, Baffles, Rectangular Diffuser, Skin Friction Coefficient, Reynolds Number.

References





DOI: https://doi.org/10.22485/jaei%2F2021%2Fv91%2Fi1-4%2F222451