Dr. Raj Kumar

Associate Professor
Faculty of Engineering & Technology

Dr Raj Kumar is currently working as an Associate Professor in the Faculty of Engineering and Technology at Shoolini University Himachal Pradesh (India). He joined as an Assistant Professor in the Shoolini University (India), in Sept. 2013. He received his Bachelor of Engineering degree in Mechanical Engineering from the North Maharashtra University Jalgaon (MS), India, and obtained his Master of Engineering in Manufacturing Technology from NITTTR (Panjab University) Chandigarh, India. He earned his doctorate in Mechanical Engineering from Shoolini University, Himachal Pradesh, India. His research concentrated on the Performance Investigation of Solar Air Channel having Discrete V-Pattern Baffle as Turbulence Promoters on Absorber Plate. He has published over 25 articles in international journals and over 14 conference proceedings. He has filed 10 patents. His current research interests are heat transfer enhancement, experimental fluid mechanics and manufacturing.

  1. Bhardwaj, A. K., Kumar, R.,&Chauhan, R. (2019). Experimental investigation of the performance of a novel solar dryer for drying medicinal plants in Western Himalayan region. Solar Energy, 177, 395–407.https://doi.org/10.1016/j.solener.2018.11.007
  2. Kumar, R., Kumar, A., Chauhan, R.,&Maithani, R. (2018).Comparative study of effect of various blockage arrangements on thermal hydraulic performance in a roughened air passage. Renewable & Sustainable Energy Reviews, 81, 447–463. http://dx.doi.org/10.1016/j.rser.2017.08.023
  3. Chauhan, R., Thakur, N.S., Kumar, N., Kumar, R., Singh, T., & Kumar, A. (2018). Heat transfer augmentation in solar thermal collectors using impinging air jets: a comprehensive review.  Renewable and Sustainable Energy Reviews, 82, 3179-3190. http://dx.doi.org/10.1016/j.rser.2017.10.025
  4. Kumar, R., Chauhan, R., Sethi, M., &Kumar, A. (2018). Experimental investigation on overall thermal performance of fluid flow in a rectangular channel with  discrete V-pattern baffle. Thermal Science, 22, 183-191. https://doi.org/10.2298/TSCI151206125K
  5. Bhardwaj, A.K., Kumar, A., Maithani, R., Kumar, R., Kumar, S., & Chauhan, R.(2018)  Experimental study on heat transfer and fluid flow enhancement of a spherical shape obstacle solar air passage. Thermal Science, International Science Journal, Accepted for publication.
  6. Mishra, P. K.,  Nadda, R., Kumar, R.,Rana, A., Sethi, M.,&Ekileski, A. (2018). Optimization of multiple arcs protrusion obstacle parameters using AHP-TOPSIS approach in an impingement jet solar air passage. Heat Mass Transfer, https://doi.org/10.1007/s00231-018-2405-4
  7. Nadda, R., Kumar, R.,Kumar, A., &Maithani, R. (2018) Optimization of single arc protrusion ribs parameters in solar air heater with impinging air jets based upon PSI approach. Thermal Science and Engineering Progress, 7 146–154. https://doi.org/10.1016/j.tsep.2018.05.008
  8. Khargotra, R., Kumar, R., Chauhan, R. (2018). Comparative analysis and thermal performance evaluation of heat enhancer in solar water flat plate collector. International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249-6890; ISSN (E): 2249-8001 Vol. 8, Special Issue 6, 791-794.
  9. Nadda, R., Kumar, R., Chauhan, R., & Singh, T. (2018). Experimental investigation and optimization of Tungsten carbide composite alloys by hybrid Taguchi AHP-TOPSIS approach. Alexandria Engineering Journal, (Accepted for publication) https://doi.org/10.1016/j.aej.2018.07.013
  10. Kumar, N., Kumar, A., Thakur, R.,  Thakur A., &Kumar, R. (2018). A comparative study of hydrodynamic and Thermal performance of different air jets Impingement solar air collector” JP Journal of Heat and Mass Transfer, 15, 829-845. http://dx.doi.org/10.17654/HM015040829
  11. Kumar, R., Sethi, M., Chauhan, R., &Kumar, A. (2017). Experimental study of enhancement of heat transfer and pressure drop in a solar air channel with discretized broken V-pattern baffle. Renewable Energy, 101, 856-872. http://dx.doi.org/10.1016/j.renene.2016.09.033
  12. Kumar, R., Chauhan, R.,Sethi, M.,&Kumar, A. (2017). Experimental study and correlation development for Nusselt number and friction factor for discretized broken V-pattern baffle solar air channel. Experimental Thermal and Fluid Science, 81, 56-75. http://dx.doi.org/10.1016/j.expthermflusci.2016.10.002
  13. Kumar, R., Kumar, A., Chauhan, R.,  &Sethi, M. (2017). Heat transfer enhancement in a solar air channel with broken multiple V-type baffle. Case Studies in Thermal Engineering, 8, 187-197. http://dx.doi.org/10.1016/j.csite.2016.07.001
  14. Kumar, A., Kumar, R., Chauhan, R., Sethi, M., Kumari, A., Verma, N., &Nadda, R. (2017). Single phase thermal and hydraulic performance analysis of a V-pattern dimpled obstacles air passage. Experimental Heat Transfer, 39, 339-426. DOI:10.1080/08916152.2016.1269139
  15. Sharma,  A., Chauhan, R., Singh, T., Kumar, A., Kumar, R., Kumar, A., &Sethi, M. (2017). Optimizing discrete V obstacle parameters using a novel Entropy-VIKOR approach in a solar air channel. Renewable Energy, 106,310-320.DOI:  10.1016/j.renene.2017.01.010
  16. Kumar, A., Kumar, R., Maithani, R., Chauhan, R., Sethi, M., Kumari, A., Kumar, S., & Kumar, S. (2017). Correlation development for Nusselt number and friction factor of a multiple type V-pattern dimpled obstacles solar air passage. Renewable Energy 109, 461-479. http://dx.doi.org/10.1016/j.renene.2017.03.030
  17. Kumar, A., Chauhan, R., Kumar, R., Singh, T., Sethi, M., Kumar, A., & Sharma, A. (2017). Developing heat transfer and pressure loss in an air passage with multi discrete V-blockages” Experimental Thermal and Fluid Science 84, 266 –278. http://dx.doi.org/10.1016/j.expthermflusci.2017.02.017
  18. Kumar, A., Kumar, R., Maithani, R., Chauhan, R., Kumar, S., &Nadda, R. (2017). An experimental study of heat transfer enhancement in an air channel with broken multi type V-baffles. Heat Mass Transfer, 1-20. DOI 10.1007/s00231-017-2089-1
  19. Bhardwaj, A.K., Kumar, R., Chauhan, R., &Sethi, M. (2017). Experimental investigation of an indirect solar dryer integrated with phase change material for drying valerianajatamansi (medicinal herb). Case Studies in Thermal Engineering, 10, 302–314.http://dx.doi.org/10.1016/j.csite.2017.07.009
  20. Nadda, R., Kumar, A., Maithani, R., Kumar, R. (2017) Investigation of thermal and hydrodynamic performance of impingement jets solar air passage with protrusion with combination arc obstacle on the heated plate. Experimental Heat Transfer, 232-250. DOI:10.1080/08916152.2017.1405102
  21. Kumar, R., Chauhan, R., Sethi, M., Sharma, A., &Kumar, A. (2016) Experimental Investigation of effect of flow attack angle on thermohydraulic performance of air flow in a rectangular channel with discrete V-pattern baffle on the heated plate. Advances in Mechanical Engineering, 8(5), 1-12. DOI: 10.1177/1687814016641056
  22. Kumar, R., Kumar, A., Sharma, A., Chauhan, R., &Sethi, M. (2016). Experimental Study of heat transfer enhancement in a rectangular duct distributed by multi V-perforated baffle of different relative baffle width. Heat Mass Transfer, 53, 1289-1304. DOI 10.1007/s00231-016-1901-7
  23. Kumar, R., Chauhan, R., &Sethi, M. (2014) Thermal analysis and recent developments in artificially roughened solar air Heater. Journal of Material Science and Mechanical Engineering (JMSME) Print ISSN: 2393-9095; Online ISSN: 2393-9109; Volume 1, Number 1; October, 2014 pp. 7-10
  24. Kumar, R., Pedagopu, V., Kumar, A., Thakur, R., &Pundier, A. (2013). CFD based  analysis of heat transfer and friction characteristics ofbroken multiple rib roughened solar air heater duct. International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249-6890; ISSN (E): 2249-8001 Vol. 3, Special Issue 5, 165-172.

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