EFFECT OF TOOL SHOULDER DIAMETER AND PIN GEOMETRY ON TEMPERATURE DISTRIBUTION IN FRICTION STIR WELDING Chandrakant Swain, Akash Shukla, Omprakash Bharti Iet Conference Proceedings, 2025 The contact between the tool and the workpiece is the primary source of heat generation in the welding zone during friction s tir welding. As the welding area accumulates heat, it begins to transfer through the workpiece and the tool. Efficient heat dissipation is required for uninterrupted welding and welding distance extension. A key to this process is the profile and shape of the t ool. We can examine how the heat is dissipated and compare several tools by applying thermal simulations on the tool to observ e how each one would release the greatest amount of heat. In this study, a total of three tools have been designed with differe nt shoulder diameters and pin shapes. These tools were modelled and simulated using Ansys. Subsequently, appropriate mesh sizes and boundary conditions, such as temperature and convection, were established. After meshing the tools, solutions were obtained for all three. Ultimately, it was determined that tool number 3 exhibited the highest heat dissipation at 1070.5. The H13 tool decreases operating temperature by 58.4% in comparison with traditional carbide tools, proving superior thermal management in 304L stainless steel friction stir welding. Future studies should confirm these simulations by conducting controlled friction stir welding tests using Tools 1-3 on AA304L plates while keeping track of temperature with thermocouples and performing mechanical tests. The outcomes will be compared with industrial case histories from industries like aerospace (e.g., joining of SpaceX fuel tanks) and automotive (e.g., Tesla battery tray assembly) where similar tool geometries are employed.
Performance of Pelton turbine using ANSYS mechanical APDL: Modal analysis Anupkumar H Chaudhari, Gaurang C Chaudhari, Omprakash S Bharti Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2025 Presently, there is huge demand of global renewable energy such as solar energy, wind energy, geothermal energy, hydropower, biomass, and wave energy. Hydro offers the most effective outcomes throughout all phases of the energy transition. Since 75% of the earth's surface is covered by water, water power represents a sizable source of free and sustainable energy on earth. The hydropower turbines, such as Pelton wheel turbine, are expected to work in severe operating conditions that may affect its structural integrity. However, the life span of the Pelton turbine can be compromised if the resonance occurs due to structural vibration and dynamic stresses. In present study, computational study is performed to detect the structural damage of bucket of Pelton turbine for both structural and modal analyses using commercial software ANSYS ® . The quantities such as overall deformation, von Mises strain and von Mises stress are determined from static analysis while various mode shapes and associated natural frequencies are predicted through modal analysis. At first, the static structural analysis is performed by applying load and then implementing the developed stress field in the modal analysis to evaluate safety limits of structure with respect to resonance. The various mode shapes and associated natural frequencies are predicted using Block Lanczos method. The deformation of 8 mm is obtained for uniform pressure load, while the maximum deformation of 25 mm is obtained by applying both pressure and force. The estimated lowest modal natural frequency is 4231.8 Hz while the maximum frequency is determined as 16126 Hz. The results show that the bucket passing frequency does not match with natural frequency resulting in safe design and operation of turbine. The present results may contribute in improvement of reliability and efficiency of turbine operation.
Design Optimization of Micro-Hydro Pelton Turbine: Integration of Static and Modal Analysis Using ANSYS APDL Anupkumar H Chaudhari, Gaurang C Chaudhari, Omprakash S Bharti Iop Conference Series Earth and Environmental Science, 2025 Hydro energy offers more reliable, efficient and cost-effective solution compared to other form of renewable energy source for the production of electricity. However, issues such as proper choice of site for installation and huge investment for hydro power plant still a huge challenge. Further, operation of water turbine and its maintenance are also major concerns from the hydraulic engineering perspective. For an instance, hydropower turbine such as Pelton wheel turbine continuously operate in adverse conditions that may harm its strength, robustness, and stability for a long span. Further, the structure of turbine is compromised when the resonant frequency coincides with natural frequency of the structure due to dynamics stresses. Hence, in this research, both static structural and modal analyses are performed simultaneously to investigate the influence of dynamic load as well as pressure distribution on the bucket structure of Pelton turbine with the help of ANSYS®. The bucket is made of high strength material such as stainless steel. For both analyses, the identical constraint condition and boundary conditions are employed. Modal analysis is used for finding the vibrational frequencies of each mode using Block Lanczos method. On the other hand, the static structural analysis is performed to predict total distortion, von-Mises stress, and elastic strain distribution within bucket. The numerical model is based on proposed bucket geometry in the simulations. The results show that the bucket material has a maximum stress capacity of 69447 MPa which can readily bear the maximum stress from the maximum applied load. Further, the modal frequencies do not match with natural frequency, hence the resulting structural design is safe for operation at high impact of load.
NUMERICAL INVESTIGATION OF PRESSURE VESSEL USING STATIC AND MODAL ANALYSES Nayan Patel, Nitesh Patel, Omprakash Bharti Iet Conference Proceedings, 2025 A large number of industrial application of pressure vessel can be found such as fluid storage vessels, chemical processing tanks, petrochemical plants, and many more. Due to continuous operation, pressure vessels are under constant effect of structural, thermal and vibrational loads. This may cause the pressure vessel to undergo severe structural deformation leading to structural damage. Hence, the safe design of pressure vessel requires proper selection of material. The present study examines the combined effects of pressure, thermal, and vibrational loads on the structural integrity of horizontal pressure vessel made from different materials such as structural steel, aluminium alloy, stainless steel, carbon steel, copper alloy, grey cast iron, and titanium alloy. Through static analysis, deformation, von-Mises strain, and von-Mises stress are determined, whereas modal analysis reveals the modal frequencies and associated mode shapes using Block Lancos method. As expected, the deformation and strain are the highest for aluminium alloy while it is the lowest for carbon steel. It is interesting to observe that titanium alloy have the lowest stress value. It is also interesting to observe that the large modal frequency is observed for the aluminium alloy material while the copper alloy material shows lowest modal frequency.
COMPUTATIONAL STUDY OF HEAT TRANSFER ENHANCEMENT IN PHOTO VOLTAIC SOLAR PANEL USING EVACUATED GLASS TUBE SYSTEM Shivang Bhandari, Omprakash Bharti, Manan Shah, Nitesh Patel Iet Conference Proceedings, 2025 The excessive consumption of fossil fuels has resulted in severe climate change, causing global warming, glacier melting, and loss of the ozone layer. However, the installation of photovoltaic (PV) solar panels in large scale can be a crucial step in resolving climatic and environmental difficulties. However, under continuous operation, there is drastically increase in temperature of solar cell which can deteriorate its performance and may damage it resulting its shorter life span. One of the solution to reduce the temperature of solar cells is to utilize the excessive heat for heating water for residential and small scale industrial applications. Hence, it is utmost important to determine the maximum temperature produced in solar cell under critical thermal conditions. The present numerical simulations are performed for the PV solar panel to determine the maximum temperature using ANSYS®commercial software. The simulations are performed using steady-state thermal approach. The thermal performance of proposed PV panel enclosed in a cylindrical glass tube is evaluated. It is interesting to find that the maximum temperature is determine for the thermal condition of only radiative heat transfer case. The maximum temperature zone is observed at the centre of the solar panel while it decreases from inward to outward direction.
Finite Element Analysis of Cargo Container Fixture for Enhanced Load Stability Mayank Jain, Akash Shukla, Nitesh Patel, Omprakash Bharti Iet Conference Proceedings, 2025 This research is a comprehensive study of designing and analyzing a flexible fixture for cargo containers by employing SolidWorks and ANSYS software. The main aim of the design problem was to design a flexible fixture that improves the safety and stability of cargo containers during transportation and can be utilized to fit different sizes of containers. ANSYS software was used to conduct a detailed static analysis to examine the structural strength under varied loads and validate conformity to industry standards. Additionally, a dynamic analysis was conducted to model the behaviour of the fixture under actual operating conditions, which experienced noteworthy improvements in load distribution and handling stresses. The conclusions are that not only will the suggested design reinforce cargo containers, but the overall efficiency of the cargo handling activities as well. The importance of incorporating high-technology design strategies and simulation methodologies in logistics practices is identified, ultimately contributing to the transportation of products being performed safely and effectively.
Investigation of the transition of natural convective flow of water in a differentially heated cubic enclosure Omprakash S. Bharti, Arun K. Saha, Malay K. Das Experimental Heat Transfer, 2023 The present study aims at the investigation of the transition of the natural convective flow in a water-filled differentially heated cubic enclosure. The schlieren-particle image velocimetry (PIV) system has been developed and employed for simultaneous measurement of ray-averaged velocity and temperature fields from transient schlieren images for distinct Rayleigh number (Ra) (1 × 107 ≤ Ra ≤ 5 × 108). The experimentally obtained results have been compared with three-dimensional computational results. The three-dimensional incompressible simulations are carried out for a wide range of Ra (1 × 105 ≤ Ra ≤ 5 × 108), treating the density difference using Boussinesq approximation. The results from present simulations show that the flow is found steady in the range of Ra (1 × 105 ≤ Ra ≤ 1 × 108) while the critical Ra, at which the steady flow becomes unsteady, lies between 1 × 108 and 5 × 108. The critical Ra from the experiments is found to lie between 4 × 108 and 5 × 108. Also, the three-dimensionality effect on large-scale temperature field is found to decrease as Ra increases.
Sensitivity Analysis of Schlieren-Particle Image Velocimetry System for Simultaneous Measurement of Flow and Temperature Field of a Free Convective Flow Inside a Cubic Cavity Omprakash S. Bharti, Arun K. Saha, Malay K. Das Journal of Thermal Science and Engineering Applications, 2022 Fluid flows characterized by density variations have been studied using the schlieren-particle image velocimetry (PIV) system. The knife-edge location plays a crucial role in determining the system’s sensitivity, which significantly affects the accuracy of the measured quantities. Further, the optimum knife-edge position and the correct combination of image recording speed and interrogation window size are desirable for achieving the most accurate and reliable results. The present paper discusses the above issues on the measured quantities, such as temperature field, local Nusselt number distribution along the conducting walls, average Nusselt number, and velocity field. The experiment is performed to investigate laminar and steady natural convective flow in a water-enclosed cubic cavity with a left hot wall and a right cold wall. The analysis is undertaken for various knife-edge positions (0–90%), different image time separation varying (20–200 ms,) and interrogation window size using two passes varying from W1 = 32 pixels, W2 = 16 pixels to W1 = 128 pixels, W2 = 64 pixels. The results are presented for two distinct Rayleigh number, 1 × 108 and 3 × 108. Three-dimensional simulations have been carried out to check the fidelity of the experiment for Ra = 1 × 108. A high dynamic range of temperature is obtained for the range of knife-edge position in 50–65% while a high-velocity range is realized for knife-edge cutoff of 65% and combination of image time separation of Δt = 100 ms and interrogation window size with two passes of W1 = 64 pixels followed by W2 = 32 pixels.
Dynamic Load Management and Optimized Fastening Techniques for Cargo Containers: A Comprehensive Review M Jain, A Shukla, O Bharti, N Patel International Conference on Artificial Intelligence, Communication … , 2026 2026
Photovoltaic-Thermal Hybrid Systems: A Comprehensive Review S Bhandari, M Shah, O Bharti, N Patel Proceedings of International Conference on Artificial Intelligence … , 2025 2025
for Cargo Containers: A Comprehensive M Jain, A Shukla, O Bharti, N Patel Proceedings of International Conference on Artificial Intelligence … , 2025 2025
Design Optimization of Micro-Hydro Pelton Turbine: Integration of Static and Modal Analysis Using ANSYS APDL AH Chaudhari, GC Chaudhari, OS Bharti IOP Conference Series: Earth and Environmental Science 1533 (1), 1-19 , 2025 2025
Effect of tool shoulder diameter and pin geometry on temperature distribution in friction stir welding C Swain, A Shukla, O Bharti Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
Computational study of heat transfer enhancement in photo voltaic solar panel using evacuated glass tube system S Bhandari, O Bharti, M Shah, N Patel Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
Numerical investigation of pressure vessel using static and modal analyses N Patel, N Patel, O Bharti IET Conference Proceedings CP920 2025 (7), 307-314 , 2025 2025
Finite element analysis of cargo container fixture for enhanced load stability M Jain, A Shukla, N Patel, O Bharti Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
A Review of Experimental, and Numerical Studies on Solar Water Heating Systems J Patel, K Parmar, O Bharti, N Parmar 4th International Conference on Recent Advances in Metallurgy and Mechanical … , 2025 2025
Performance of Pelton turbine using ANSYS mechanical APDL: Modal analysis AH Chaudhari, GC Chaudhari, OS Bharti Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2025 2025 Citations: 1
Advancements in Solar Photovoltaic-Thermal Hybrid Systems: A Comprehensive Review S Bhandari, M Shah, O Bharti, N Patel, A Shukla International Conference on Artificial Intelligence, Communication … , 2025 2025 Citations: 1
Investigation of the transition of natural convective flow of water in a differentially heated cubic enclosure OS Bharti, AK Saha, MK Das Experimental Heat Transfer 36 (03), 376-403 , 2023 2023 Citations: 4
Sensitivity Analysis of Schlieren-Particle Image Velocimetry System for Simultaneous Measurement of Flow and Temperature Field of a Free Convective Flow Inside a Cubic Cavity OS Bharti, AK Saha, MK Das Journal of Thermal Science and Engineering Applications 14 (5), 051005 (16 … , 2022 2022 Citations: 3
Sensitivity Analysis of Schlieren-PIV System for Simultaneous Measurement of Flow and Temperature Field of a Free Convective Flow inside a Cubic Cavity OS Bharti, A Saha, M Das Journal of Thermal Science and Engineering Applications, 1-38 , 2021 2021
Simultaneous Estimation of Pr and Ra in a Natural Convective Flow Using Inverse Technique OS Bharti, D Rajan, AK Saha, MK Das Journal of Heat Transfer 142 (2), 022601 (19 Pages) , 2020 2020
Simultaneous measurement of velocity and temperature fields during natural convection in a water-filled cubical cavity OS Bharti, AK Saha, MK Das, S Bansal Experimental Thermal and Fluid Science 99, 272-286 , 2018 2018 Citations: 28
Schlieren System For Temperature and Velocity Field Measurement: Application OS Bharti, S Choubey, AK Saha, MK Das Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and … , 2017 2017
Numerical simulation of steady laminar natural convective flow in a differentially heated cubical enclosure S Choubey, OS Bharti, AK Saha, MK Das ASCHT 2017 6th Asian Symposium on Computational Heat Transfer and Fluid Flow … , 2017 2017
An Evaluation of Optical Flow Algorithm for extracting Velocity Fields in Schlieren technique OS Bharti, S Bansal, AK Saha, MK Das Proceedings of the 6th International and 43rd National Conference on Fluid … , 2016 2016
A low cost schlieren system for investigating two-dimensional fluid flow OS Bharti, S Bansal, AK Saha, MK Das Proceedings of the 23rd National Heat and Mass Transfer Conference and 1st … , 2015 2015
MOST CITED SCHOLAR PUBLICATIONS
Simultaneous measurement of velocity and temperature fields during natural convection in a water-filled cubical cavity OS Bharti, AK Saha, MK Das, S Bansal Experimental Thermal and Fluid Science 99, 272-286 , 2018 2018 Citations: 28
Performance analysis of an irreversible Otto cycle using finite time thermodynamics HB Mehta, OS Bharti Proceedings of the World Congress on Engineering 2, 1-5 , 2009 2009 Citations: 22
Investigation of the transition of natural convective flow of water in a differentially heated cubic enclosure OS Bharti, AK Saha, MK Das Experimental Heat Transfer 36 (03), 376-403 , 2023 2023 Citations: 4
Sensitivity Analysis of Schlieren-Particle Image Velocimetry System for Simultaneous Measurement of Flow and Temperature Field of a Free Convective Flow Inside a Cubic Cavity OS Bharti, AK Saha, MK Das Journal of Thermal Science and Engineering Applications 14 (5), 051005 (16 … , 2022 2022 Citations: 3
Power, efficiency, entropy generation rate and ecological optimization of an irreversible Otto cycle with variable specific heats HB Mehta, OS Bharti Proceedings of the 20th National and 9th International ISHMT-ASME Heat and … , 2010 2010 Citations: 3
Performance of Pelton turbine using ANSYS mechanical APDL: Modal analysis AH Chaudhari, GC Chaudhari, OS Bharti Proceedings of the Institution of Mechanical Engineers, Part E: Journal of … , 2025 2025 Citations: 1
Advancements in Solar Photovoltaic-Thermal Hybrid Systems: A Comprehensive Review S Bhandari, M Shah, O Bharti, N Patel, A Shukla International Conference on Artificial Intelligence, Communication … , 2025 2025 Citations: 1
Dynamic Load Management and Optimized Fastening Techniques for Cargo Containers: A Comprehensive Review M Jain, A Shukla, O Bharti, N Patel International Conference on Artificial Intelligence, Communication … , 2026 2026
Photovoltaic-Thermal Hybrid Systems: A Comprehensive Review S Bhandari, M Shah, O Bharti, N Patel Proceedings of International Conference on Artificial Intelligence … , 2025 2025
for Cargo Containers: A Comprehensive M Jain, A Shukla, O Bharti, N Patel Proceedings of International Conference on Artificial Intelligence … , 2025 2025
Design Optimization of Micro-Hydro Pelton Turbine: Integration of Static and Modal Analysis Using ANSYS APDL AH Chaudhari, GC Chaudhari, OS Bharti IOP Conference Series: Earth and Environmental Science 1533 (1), 1-19 , 2025 2025
Effect of tool shoulder diameter and pin geometry on temperature distribution in friction stir welding C Swain, A Shukla, O Bharti Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
Computational study of heat transfer enhancement in photo voltaic solar panel using evacuated glass tube system S Bhandari, O Bharti, M Shah, N Patel Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
Numerical investigation of pressure vessel using static and modal analyses N Patel, N Patel, O Bharti IET Conference Proceedings CP920 2025 (7), 307-314 , 2025 2025
Finite element analysis of cargo container fixture for enhanced load stability M Jain, A Shukla, N Patel, O Bharti Parul University International Conference on Engineering and Technology 2025 … , 2025 2025
A Review of Experimental, and Numerical Studies on Solar Water Heating Systems J Patel, K Parmar, O Bharti, N Parmar 4th International Conference on Recent Advances in Metallurgy and Mechanical … , 2025 2025
Sensitivity Analysis of Schlieren-PIV System for Simultaneous Measurement of Flow and Temperature Field of a Free Convective Flow inside a Cubic Cavity OS Bharti, A Saha, M Das Journal of Thermal Science and Engineering Applications, 1-38 , 2021 2021
Simultaneous Estimation of Pr and Ra in a Natural Convective Flow Using Inverse Technique OS Bharti, D Rajan, AK Saha, MK Das Journal of Heat Transfer 142 (2), 022601 (19 Pages) , 2020 2020
Schlieren System For Temperature and Velocity Field Measurement: Application OS Bharti, S Choubey, AK Saha, MK Das Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and … , 2017 2017
Numerical simulation of steady laminar natural convective flow in a differentially heated cubical enclosure S Choubey, OS Bharti, AK Saha, MK Das ASCHT 2017 6th Asian Symposium on Computational Heat Transfer and Fluid Flow … , 2017 2017