Manjunath S H

@acu.edu.in

Professor and Head
Adichunchanagiri University



           

https://researchid.co/manjunathsh

RESEARCH INTERESTS

Alternate fuels Composite Materials

10

Scopus Publications

Scopus Publications

  • Metal halide perovskite-based photocatalysts for organic pollutants degradation: Advances, challenges, and future directions
    Mohamed Masri, Girisha. K. B, Abdo Hezam, Khaled Alkanad, Kalappa Prashantha, S.H. Manjunath, Udayabhanu, Faten Masri, Talal F. Qahtan, and Kullaiah Byrappa
    Elsevier BV

  • Investigative Studies on Performance Behavior on an IDI diesel engine with a Geometrically Modified Swirl Chamber using Biodiesel Blends




  • Numerical Analysis of Turbulent Heat Exchanger Tube Using Novel Para-Winglet Tape
    R. Thejaraju, K. B. Girisha, S. H. Manjunath, and B. S. Dayananda
    Springer Singapore

  • Performance and emission characteristics of hybrid biofuels in di diesel engine
    H. Arunkumar, S.H. Manjunath, and N. Varunkumar Reddy
    MAFTREE
    Rubber seed oil (RSO), derived from the seeds of Hevea brasiliensis, is an exciting alternative with great potential for use in biodiesel production. Furthermore, it can be injected directly into an internal combustion engine, blended with diesel derived from fossil fuels. The present work deals with the potential estimation of waste cooking oil (WCO) bio diesel and RSO biodiesel, characterization of biodiesel, performance and exhaust analysis of biodiesel blends in DI diesel engine. The best results in terms of performance and emission are obtained for B10 blend which resulted in highest brake thermal efficiency of 19.2 % at 80% loading. The NOx emissions are maximum for B20 blend.


  • Numerical evaluation of thermo-hydraulic performance index of a double pipe heat exchanger using double sided louvered winglet tape
    R THEJARAJU, Kb GİRİSHA, Sh MANJUNATH, and Bs DAYANANDA
    Journal of Thermal Engineering
    The decade has witnessed great importance of numerical techniques for scientists and researchers in deciding the correctness, stability, and reliability of new designs. In the present study a numerical technique has been implemented to investigate the thermo-hydraulic performance of the Louvered winglet tape inside the tube section of the double pipe heat exchanger. The Louvered winglet tape has been examined with the slope angle of 50, 100, 150 and 210 to study their thermal characteristics. The Reynolds number 4000-30000 was examined on slope angle of 50, 100, 150 and 210 to study their flow characteristics in the turbulent domain. A smooth pipe was examined to evaluate heat transfer characteristics in terms of Nusselt number and friction coefficient over augmented tube with Louvered winglet tape. The results show a satisfactory performance of Louvered winglet tape over the smooth tube with a similar trend of friction factor, Nusselt number, and thermo-hydraulic performance index (THPI). The percentage of increment of the Nusselt number of the results is found to be 237.04%, 258.4%, 275.11%, and 289.72% when compared to smooth pipe with respect to slope angle of 50, 100, 150 and 210, respectively. The amount of increase in the friction factor in comparison with plain tube is 5.13, 6.73, 8.33, and 11.73 times of that of smooth pipe with respect to slope angle of 50, 100, 150 and 210, respectively. The Louvered winglet tape with slope angle 150 has shown to be promising with respect to higher THPI when considering with other slope angle of 50, 100, and 210. The maximum THPI of 1.85 was obtained for slope angle 150 at Re 12000. Similarly, the THPI values for other slope angle 50, 100, and 210 are 1.71, 1.78 and 1.69. In addition to better performance the Louvered winglet tape can be easily fabricated and adapted for a wide variety of heat transfer industries.

  • Heat transfer enhancement in a high power LED using heat sink with liquid pockets


  • Experimental investigation on HSFP using MWCNT based nanofluids for high power light emitting diodes
    Sangmesh B, , Gopalakrishna K, Manjunath S.H., Kathyayini N, K. Kadirgama, M. Samykano, G.C. Vijayakumar, , ,et al.
    Universiti Malaysia Pahang Publishing
    LEDs, of late, have received attention as the next generation lighting system for enhanced luminous efficiency and higher lifespan. However, the thermal management of the LEDs is the crucial parameter to be countered for global acceptance as a revolutionary illumination source. This paper reports the experimental investigation of natural convective heat transfer of high power LED COBs using MWCNT and MWCNT-CuO nanofluids mixed with de-ionized water. The study uses MWCNT based nanofluids as a route to enhance the heat transfer of high power LEDs by the passive cooling technique. This study presents an innovative cooling device integrated with numerous fluid pockets, called the HSFP, to achieve the enhanced thermal performance of heat sinks for applications in high intensity LED lights. Nanofluids of various concentrations were formulated and their heat transfer performance evaluated using a series of experiments and compared with liquid cooling and a conventional heat sink. The experimental finding reveals 20– 30% lowered thermal resistance using the new HSFP (nanofluids). Thus, the HSFP found to effectively dissipates the heat in high-power LED COBs using nanofluids as the cooling medium compared to the conventional heat sink.