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Call for Paper - December – 2022 Edition   

(SJIF Impact Factor: 5.966) (IJIFACTOR 3.8, RANKING: A+) (PIF: 3.460)

IJATCA solicits original research papers for the December – 2022 Edition.
Last date of manuscript submission is December 30, 2022.


Effect of Length Ratio on Heat Transfer through Discrete Heaters in a Vertical Channel

Volume: 1 Issue: 1
Year of Publication: 2019
Authors: Karthik K Y, Kishan Naik, Banjara Kotresha, N Gnanasekaran


This paper discusses about the effect of length ratio on mixed convection heat transfer through discrete heat sources placed inside a vertical channel. The distinct heat source assembly is the combination of alternative Bakelite and aluminum strips. The aim of the study is to investigate the effect of length ratio of the Bakelite strips on heat transfer and hot spot appearing on the heater surfaces. Four different length ratios of the Bakelite strips are considered in the present numerical exploration. The problem is solved as conjugate heat transfer as it involves aluminum and Bakelite solids along with fluid flowing in the vertical channel. The result shows that the hot spot reduces on the heater surfaces as Bakelite length ratio increases. It is also observed that excess temperature on all the heaters reduces as inlet fluid velocity increases. The results of excess temperature of all the heaters along with temperature contours are presented and discussed.


  1. Ahamad, S. I., & Balaji, C. (2015). A Simple Thermal Model for Mixed Convection From Protruding Heat Sources, Heat Transfer Engineering, 36:4, 396-407.

  2. Browmik, H., & Tou, K. W. (2005). Experimental Study of Transient Natural Convection Heat Transfer From Simulated Electronic Chips, Experimental Thermal Fluid Science, 29(4), 485-492.

  3. Desrayaud, G., & Fichera, A. (2003). On Natural Convective Heat Transfer in Vertical Channels With a Single Surface Mounted Heat-Flux Module, ASME Journal of Heat Transfer, 125(4), 734-739.

  4. Dogan, A., Sivioglu, M., & Baskaya, S. (2005). Experimental Investigation of Mixed Convection Heat Transfer in a Rectangular Channel with Discrete Heat Sources at the Top and at the Bottom, International Journal of Heat and Mass Transfer, 32, 1244-1252.

  5. Gavara, M. (2012). Natural Convection in a Vertical Channel With Arrays of Flush-Mounted Heaters on opposite Conductive Walls, Numerical Heat Transfer Part A-Applications, 62(11), 111-135.

  6. Kamath, P. M., Balaji, C., & Venkateshan, S. P. (2014). Heat transfer enhancement with discrete heat sources in a metal foam filled vertical channel, International Communications in Heat and Mass Transfer, 53, 180-184.

  7. Kotresha, B., & Gnanasekaran, N. (2019). A Synergistic Combination of Thermal Models for Optimal Temperature Distribution of Discrete Sources Through Metal Foams in a Vertical Channel, ASME Journal of Heat Transfer, 141(2), 022004 (1-8).

  8. Kumar, A., & Balaji, C. (2011). ANN Based Estimation of Heat Generation from Multiple Protruding Heat Sources on a Vertical Plate under Conjugate Mixed Convection, International Journal of Thermal sciences, 50, 532-543.

  9. Premachandran, B., & Balaji, C. (2006). Conjugate Mixed Convection with Surface Radiation from a Horizontal Channel with Protruding Heat Sources, International Journal of Heat and Mass Transfer, 49, 3568-3582.

  10. Sarper, B., Saglam, M., & Aydin, O. (2018). Constructal Placement of Discrete Heat Sources with Different Lengths in Vertical Ducts Under Natural and Mixed Convection, ASME Journal of Heat Transfer, 140, 121401 - 13.


Vertical channel, Length ratio, Discrete Heat source, Conjugate heat transfer.

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