Computational Analysis of Automobile Radiator Roughened with Rib Roughness

Document Type : Full Lenght Research Article


1 Department of Thermal Engineering, Faculty of Technology, Veer Madho Singh Bhandari Uttarakhand Technical University, Dehradun 248007, India

2 Mechanical Engineering department, MIET, Meerut-250005, India

3 Mechanical Engineering department, SOET, KR Mangalam University, Gurgaon -122103, India


Heat transfer enhancement in a car radiator using different nano fluids has been performed very often, but use of artificial roughness has been seldom done. In the present work, artificial roughness in the form of ribs has been incorporated in car radiator. A numerical comparative study has been performed between the ribbed automobile radiator and conventional radiator (flat tube). The nanofluid (Al2O3/Pure Water) has been used as a coolant in the car radiator configuration. The pitch is kept 15 mm (constant) for all the studies performed. The Reynolds number of the flow is selected in the turbulent regime i.e. ranging from 9350 to 23000 and the concentration of the nanofluid is taken from 0.1 to 1.0 %. It has been observed that the heat transfer rate improved with the ribbed roughness as compared to conventional configuration, but the pumping power has also increased. Furthermore, heat transfer rate also increased with increase in nano-particle concentration. The maximum heat transfer enhancement of 79% reported at nanofluid concentration of 1.0% and Reynolds number of 9350 for ribbed configuration.


Main Subjects

  1. Goudarzi, K. and Jamali, H., 2017. Heat transfer enhancement of Al2O3-EG nanofluid in a car radiator with wire coil inserts. Applied Thermal Engineering. 118, pp.510-517.
  2. Arora, N. and Gupta, M., 2020. An updated review on application of nanofluids in flat tubes radiators for improving cooling performance. Renewable and Sustainable Energy Reviews. 134, pp.110242.
  3. Naddaf, A., Heris, S.Z. and Pouladi, B., 2019. An experimental study on heat transfer performance and pressure drop of nanofluids using graphene and multi-walled carbon nanotubes based on diesel oil. Powder Technology, 352, pp.369-380.
  4. Pak, B. C. and Cho, Y. I., 1998. Hydrodynamic and heat transfer study of dispersed fluid with sub-micron metallic oxide particles. Experimental Heat Transfer, 11, pp.151-170.
  5. Choi, S. U. and Eastman, J. A., 1995. Enhancing thermal conductivity of fluids with nanoparticles. Argonne National Lab., IL (United States).
  6. Ahmed, S. A., Ozkaymak, M., Sözen, A., Menlik, T. and Fahed, A., 2018. Improving car radiator performance by using TiO2-water nanofluid. Engineering science and technology an international journal. 21(5), pp.996-1005.
  7. Naraki, M., Peyghambarzadeh, S. M., Hashemabadi, S. H. and Vermahmoudi, Y., 2013. Parametric study of overall heat transfer coefficient of CuO/water nanofluids in a car radiator. International Journal of Thermal Sciences. 66, pp.82-90.
  8. Heris, S. Z., Shokrgozar, M., Poorpharhang, S., Shanbedi, M. and Noie S. H., 2014. Experimental study of heat transfer of a car radiator with CuO/ethylene glycol-water as a coolant. Journal of dispersion science and technology, 35(5), pp.677-684.
  9. Naraki, M., Peyghambarzadeh, S. M., Hashemabadi, S. H. and Vermahmoudi, Y., 2013. Parametric study of overall heat transfer coefficient of CuO/water nanofluids in a car radiator. International Journal of Thermal Sciences. 66, pp.82-90.
  10. Bhogare, R. A. and Kothawale, B. S., 2014. Performance investigation of automobile radiator operated with Al2O3 based nanofluid. IOSR Journal of Mechanical and Civil Engineering. 11(3), pp.23-30.
  11. Nambeesan, K. P., Parthiban, R., Kumar, K. R., Athul, U. R., Vivek, M. and Thirumalini, S., 2015. Experimental study of heat transfer enhancement in automobile radiator using Al2O3/water-ethylene glycol nanofluid coolants. International Journal of Automotive & Mechanical Engineering. 12, pp. 2857-2865.
  12. Dhale, L. P., Wadhave, P. B., Kanade, D. V. and Sable, Y. S., 2015. Effect of nanofluid on cooling system of engine. International Journal of Engineering and Applied Sciences. 2(10), pp.257815.
  13. Senthilraja, S., Vijayakumar, K. C. and Gangadevi, R., 2015. Experimental investigation of Heat transfer performance of different nanofluids using automobile radiator. In: Applied mechanics and materials, vol. 787, Trans Tech Publications Ltd, pp. 212–216.
  14. Chougule, S. S., Nirgude, V. V., Gharge, P. D., Mayank, M. and Sahu, S. K., 2016. Heat transfer enhancements of low volume concentration CNT/water nanofluid and wire coil inserts in a circular tube. Energy Procedia. 90, pp.552-558.
  15. Singh, B. P., Bisht, V. S., Bhandari, P. and Rawat, K. Thermo-Fluidic Modelling of a Heat Exchanger Tube with Conical Shaped Insert having Protrusion and Dimple Roughness. Aptisi Transactions on Technopreneurship. 3(2), pp.13–29.
  16. Singh, B. P., Bisht, V. S. and Bhandari, P., 2021. Numerical Study of Heat Exchanger Having Protrusion and Dimple Roughened Conical Ring Inserts In Advances in Fluid and Thermal Engineering, Lecture Notes in Mechanical Engineering. pp. 151-161.
  17. Pak, B. C. and Cho, Y. I., 1998. Hydrodynamic and Heat Transfer Study of Dispersed Fluids with Submicron Metallic Oxide Particles. Experimental heat transfer. 11(2), pp. 151–170.
  18. Xuan, Y. and Roetzel, W., 2000. Conceptions for Heat Transfer Correlation of Nanofluids. International journal of heat and mass transfer. 43(19), 3701–3707.
  19. Hamilton, R. L. and Crosser, O. K., 1962. Thermal conductivity of heterogeneous two-component systems. Industrial and Engineering Chemistry Fundamentals. 1(3), pp. 187–191.
  20. Masoumi, N., Sohrabi, N. and Behzadmehr, A., 2009. A new model for calculating the effective viscosity of nanofluids. Journal of Physics D: Applied Physics, 42(5), 055501.
  21. Delavari, V. and Hashemabadi, S. H., 2014. CFD simulation of heat transfer enhancement of Al2O3/water and Al2O3/ethylene glycol nanofluids in a car radiator. Applied Thermal Engineering. 73, pp.378-388.
  22. Yadav, A. S., Shukla, O. P. and Bhadoria, R. S., 2022. Recent advances in modelling and simulation techniques used in analysis of solar air heater having ribs. Materials Today: Proceedings. 62(3), pp.1375-1382.
  23. Yadav, A. S. and Gattani, A., 2022. Revisiting the influence of artificial roughness shapes on heat transfer enhancement, Materials Today: Proceedings. 62(3), pp. 1383-1391.
  24. Yadav, A. S., Agrawal, A., Sharma, A., Sharma, S., Maithani, R. and Kumar, A., 2022. Augmented artificially roughened solar air heaters, Materials Today: Proceedings. 63, pp. 226-239.
  25. Bhandari, P., 2022. Numerical investigations on the effect of multi-dimensional stepness in open micro pin fin heat sink using single phase liquid fluid flow. International Communications in Heat and Mass Transfer. 138, pp.106392.
  26. Bhandari, P. and Prajapati, Y. K., 2021. Fluid flow and heat transfer behaviour in distinct array of stepped micro pin fin heat sink. Journal of Enhanced heat transfer. 28(4), pp. 31-61.
  27. Bhandari, P., Prajapati, Y. K. and Uniyal, A., 2022, Influence of three dimensionality effects on thermal hydraulic performance for stepped micro pin fin heat sink. Meccanica. 2022.
  28. Bhandari, P. and Prajapati, Y. K., 2022. Influences of tip clearance on flow and heat transfer characteristics of open type micro pin fin heat sink. International Journal of Thermal Sciences. 179, pp.107714.