Siva Subramanian.R

@skcet.ac.in

Assistant professor and Mechanical Engineering
Sri Krishna college of Engineering and Technology

Siva Subramanian.R


            Download Compact PDF  
https://researchid.co/sivasolarthermal

RESEARCH INTERESTS

Thermal
Solar
16

Scopus Publications

Scopus Publications

  • Light Spectrum Optimization based Adaboost SVM for the Secured Communication in Vehicular Ad Hoc Network
    M. M. Vijay, S. Gopi Kumar, R. Siva Subramanian, M. Karthikeyan, G. Krishnaraj, N. Manikanda Prabu
    Aip Conference Proceedings, 2025
  • Turbocharged Six-Cylinder Direct Injection Hydrogen Fueled Spark Ignition Engine Combustion and NOx Control Model
    SHIVAKUMAR N
    Engineering Perspective, 2025
    Hydrogen fueled engines play an important role in carbon free emissions, and also replacing the expensive fuel cell system due to pure hydrogen production and high capacity batteries.But NOx emissions were increased with hydrogen combustion because of superior properties of hydrogen towards proper mixing of hydrogen with air.Further, NOx emissions were increased in turbocharged commercial heavy duty vehicles with high power output.In this study, a 13.5 L turbocharged six-cylinder spark ignition (SI) engine was modeled with sub-control systems and simulated using AMESim simulation tool towards proper control over combustion and NOx control.The fuel-air equivalence ratio (FAER), exhaust gas recirculation (EGR) %, indicated mean effective pressure (IMEP) and engine speed operating conditions were considered for the simulation study towards efficient combustion of hydrogen fuel and NOx emissions control.At 22 bar IMEP, the specific NOx emissions were increased with the increase of equivalence ratio from 0.45 to 0.5; and decreased with the increase of EGR% from 0 to 5; and the specific NOx emissions were decreased with the increase of engine speed from 1200 rpm to 1400 rpm.From the simulated results, it was concluded that the specific NOx emissions were low at 1400 rpm engine speed, EGR of 5% and equivalence ratio of 0.45.
  • Effect of Post Weld Heat Treatment on Notch Sensitivity Ratio of Electron Beam Welded AA2024 Aluminum Alloy Joints
    Ch Sandeep, R. Siva Subramanian, S. Gopikumar, M. Mohan Dass, P. Sethu Ramalingam, B. Vijaya Prakash
    SAE Technical Papers, 2024
    <div class="section abstract"><div class="htmlview paragraph">Aluminum alloy AA2024 stands out as a widely utilized age-hardening alloy in aircraft applications worldwide. Despite its superior weldability in comparison to its 6000-series counterparts, AA2024 still reveals vulnerability in the welded joint. Specifically, in the T6 condition, the joint strength is only about 40% of the strength exhibited by the base metal. Faced with this challenge, design engineers often resort to selecting thicker base metal plates due to notable disparities in strength values, particularly concerning yield strength. AA2024 alloy is welded using low heat input electron beam welding. This weld is eliminated all demerits in other fusion welding process. However, heat affected zone is always a weaker region in all the fusion welding process. Post weld heat treatment process, namely, solution treatment and artificial ageing was performed to dimmish the width of weaker region. Of which, the joint treated with solution treatment followed by ageing yielded higher strength. It may be attributed by distribution of strengthening precipitates.</div></div>
  • EXPERIMENTAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF DIMPLED SURFACE THERMOSYPHON WITH Al2O3 NANOFLUID
    Siva Subramanian Rajeswaran, Kumaresan Govindasamy, Selvakumar Pandiaraj, Kamatchi Rajaram
    Thermal Science, 2024
    The current research on boiling in heat transfer applications has been increased due to the effective heat dissipation rate in solar applications, cooling of new generation electronic chips with the goal of improving performance by controlling physical factors. Thermosyphons are one among the phase change medium which has the higher critical heat flux to accelerate the heat transfer. Current work in Thermosyphon focuses on the design, fabrication, and performance analysis of dimpled thermosyphon with certain variables like surface area of heat exchange, composition of working fluid and setup angle. Due to the impact of nanotechnology, the investigation is carried out by using Al2O3 nanofluid as working fluid. The experiments are conducted initially with plain thermosyphons, later with surface modifications (dimple) by changing the orientation of the thermosyphons. The performance results of the plain thermosyphon filled with water, plain thermosyphon filled with nanofluid is compared with dimpled thermosyphon with nanofluid at different angles such as 0?, 45?, and 90?. Evaporator side dimple and condenser side dimple also designed and investigated. It is observed that thermal resistance for dimple thermosyphon-nanofluid is very low in the range of 0.06-0.20?C/W when compared with plain thermosyphon-water varies from 0.1-0.45?C/W, for plain thermosyphon-nanofluid is 0.1-0.31?C/W. It is also observed that the efficiency of dimpled tube Thermosyphon with Nanofluid is estimated as 50.66%, 69.7%, and 74.23% at 0?, 45?, and 90?, respectively, which is the maximum value when compared with plain thermosyphon with water and nanofluid.
  • Establishing an Empirical Relationship to Predict the Tensile Strength of a FSSW-AA7075 Aluminum Alloy with Mild Steel
    Riyam Abd Alrazaq Salman, Khidhair Jasim Mohammed, Rajthilak Krishnan Rajan, Ghassan Fadhil Smaisim, R. Siva Subramanian
    SAE Technical Papers, 2024
    <div class="section abstract"><div class="htmlview paragraph">In this study, an investigation was conducted on friction stir spot-welded AA7075 aluminum alloy with mild steel. Fusion welding of these two materials presents challenges because of differences in melting points and metallurgical incompatibility. To overcome these challenges, friction stir spot welding was employed for joining these materials. Trial runs were conducted based on a central composite rotatable design matrix, which encompassed four factors at five levels: tool rotational speed, plunge rate, dwell time, and tool diameter ratio. Shear tests were conducted to evaluate the joint strength, and subsequently, an empirical equation was developed via analysis of variance. Notably, a joint fabricated under specific conditions demonstrated exceptional strength, with the highest fracture load of 9.56 kN. These optimal parameters included the tool rotational speed, plunge ratio, dwell time and diameter ratio of 1000 rpm, 4 mm/min, 5 sec and 3.0. This achievement underscores the critical role of meticulous parameter optimization in achieving superior weld quality and mechanical properties in dissimilar material joints.</div></div>
  • Performance Comparison of Tray, Bed and Integrated Drying Chamber in Closed Loop Heat Pump Dryer for Bermuda Grass
    Ashok Kumar M, Kumaresan G, Sivagaminathan M, Rajakarunakaran S, Siva Subramanian R
    E3s Web of Conferences, 2023
    Drying plays a crucial role in various industries such as food production, agriculture, Siddha, Ayurveda, and medical fields. To achieve controlled drying conditions, a heat pump dryer is considered an effective method, allowing for precise control of parameters like temperature, humidity, and air velocity. In this study, a heat pump dryer was designed and constructed to investigate the drying characteristics of Bermuda grass (Cynodon dactylon) at different velocities (1.5 m/s, 2.0 m/s, and 2.5 m/s) using three types of drying chambers: fluidized bed dryer, tray dryer, and combined dryer (a combination of bed and tray). The heat pump system utilized R134a as the refrigerant. The performance of the heat pump dryer in the three drying chambers was analyzed using Bermuda grass as the drying product. The Moisture Removal Rate (MRR) was calculated for various combinations of velocity and drying chamber, and it was observed that the combined dryer achieved a higher MRR at all three velocities compared to the tray and fluidized bed dryers.
  • Experimental Performance Analysis Of Free And Forced Fully Developed Air Flow Green House Solar Dryer Using Curry Leaves
    Ashok Kumar M, Kumaresan G, Sivagaminathan M, Siva Subramanian R, Gururaj C
    E3s Web of Conferences, 2023
    The world is beginning to move away from its consumption of fossil fuels. Various technologies are being developed to make use of renewable energy sources such as wind, solar, and tidal, etc. Solar energy is the best choice among these sources because of it is readily available, abundant, and capable of producing both electric energy and space heating. Solar energy can be used directly or indirectly to dry agricultural and non-agricultural products to preserve them for long a period without formation of fungi. Drying of herbal leaves is an important process in Siddha and Ayurvedic industries to produce herbal medicines in power form. However, as herbal leaves are dried in the open sun, they are susceptible to environmental factors such as rain, insects, and livestock. These disadvantages of open-air drying shall be overwhelmed by greenhouse solar dryer. Greenhouse solar dryer with natural convection, forced convection with hot air supply are the existing methods, but when supplied with hot air, the rise in temperature leads to nutrient loss in herbal leaves. In order to avoid this loss in nutrients, the current work gives a solution that the temperature of forced convection greenhouse dryer can be reduced and controlled by supplying the ambient air at inlet flow in a fully developed air region, and this method can also leads to reduction in colour loss with possibly same or higher drying rate compare to natural convection greenhouse dryer.
  • Compelling Forces and Challenges for the Food Processing Industry to Adopt Industry 4.0
    S. Ranjith Kumar, N. Ramachandran, R. Sivasubramanian, J. Dhiyaneswaran, Arun Kurien Reji
    Internet of Things Technological Advances and New Applications, 2023
    In today’s competitive market, each and every industry or any business enterprises strive hard to sustain their position. As the technology gets upgraded at each and every phase, organizations and enterprises are forced to adopt the technologies. The technology that the industries and business enterprises want to embrace in the current scenario is Industry 4.0. German industrial giants in the year 2011 showcased Industry 4.0 at an Expo. Different companies like Cisco, GE called this technology with different names such as Internet of Services, Industrial Internet, etc., and at last this was named as a paradigm by the network specialists in the communication sector as Industry 4.0. The concepts and technological aspects caught the eyes of all industries across the globe. This technology later spread to other European continents and it is in the phase of introduction in Asian countries. Industrial Internet of Things are also an integrated component of Industry 4.0. Since it is the fourth technological advancement in the industry, it is named as Industry 4.0. The evolution starts from the first phase which is mechanization started in the beginning 2of the 18th century followed by the introduction of assembly lines in the verge of the 20th century. Examples are the Cincinnati slaughterhouse where a large volume of meat is sheared, cut packed into different parts and dispatched. The same methodology was reversed by employed by Henry Ford in the automobile assembly lines where smaller components are integrated together to formulate a car or any kind of automobile. The third industrial revolution started in the early 1970s with the introduction of internet and electronics followed by the Industrial revolution 4.0 which is the cyber-physical systems. This chapter focuses on how a food processing industry is compelled to adopt the latest trend as well as the challenges faced after adopting the new technology.
  • Analysis of modified shell and tube heat exchanger
    R. Siva Subramaniana, G. Kumaresan, A. Santosh Karthik, K. C. Sivaganes, V. Suryabalan, A. R. Venkat Guhan
    Aip Conference Proceedings, 2022
    A heat exchanger is utilized to move nuclear heat power between two different liquids, at variable temperatures and in warm contact. In this issue of hotness move included, the condition where distinctive constructional boundaries are changed for getting the presentation survey under various condition. The boundaries like cylinder width, tube length, shell types are normalized and are accessible just in specific sizes and math. The plan of a shell-and-cylinder heat exchanger as a rule includes an experimentation methodology where for a specific mix of the plan factors the hotness move region is determined and afterward one more mix is attempted to check in case there is any chance of expanding the hotness move coefficient. In this particular problem the tube material is being changed and the results are obtained. In this work with the effectiveness of new design heat exchanger is checked by varying the operational parameters.
  • Performance analysis of parabolic trough solar collector by varying the absorber surface
    Dinesh Kumar Suppan, R. Siva Subramanian
    International Journal of Ambient Energy, 2022
    In this paper, an attempt has been made to analyse the performance of parabolic trough solar collector (PTSC) by varying the absorber surface. This project intent is to convert the solar energy into a useful work because solar energy is renewable one. PTSC is a line focus heater and it is tested under different conditions by varying the absorber surface. It is found that the PTSC with different absorber surface gives a varying result from which an optimum surface is suggested for parabolic trough heater. The experiment was done with the use of aluminium sheet, aluminium foil and mirror sticker parabolic trough. Results were taken from PTSC for various collector set-up; it is found that more heat absorption is obtained by an aluminium sheet.
  • Performance analysis of multipass tubes solar water heater using nanofluids
    R. Sivasubramanian, G. Kumaresan, N. Santhosh, K.S. Reshvanth, S. Syed Riyasudeen, R. Shannon Medone
    Materials Today Proceedings, 2022
  • Design and Fabrication of Hybrid Mobility Scooter
    N. Ramachandran, R. Sivasubramanian, R. Palanivel, P. Nishanth Kalathil, B. Nirmal
    Springer Proceedings in Materials, 2021
  • Performance analysis of modified solar still integrated with flat plate collector
    R. Siva Subramanian, G. Kumaresan, R. Ajith, U. Sabarivasan, K.K. Gowthamaan, S. Anudeep
    Materials Today Proceedings, 2021
  • Design and analysis of air powered vehicle frame
    R. Sivasubramanian, G. Kumaresan, N. Neelesh Kumar, S.K. Rajeshwaran, R. Jeyaseelan, V. Manikandan, B. Mani Maran
    Materials Today Proceedings, 2021
  • Design and development of electromagnetic braking system
    International Journal of Innovative Technology and Exploring Engineering, 2019
  • Design, fabrication and experimental analysis of pandanus fibre reinforced polyester composite
    G. Veerakumar Vigneshwaran, Iyyadurai Jenish, Rajeshwaran Sivasubramanian
    Advanced Materials Research, 2014