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Papers by Radha Kanta Sarangi
Recent Advances in Thermofluids and Manufacturing Engineering
Lecture notes in mechanical engineering, Oct 1, 2022
Materials Today: Proceedings, 2019
This paper reviews different experimental and theoretical studies related to B4C reinforced alumi... more This paper reviews different experimental and theoretical studies related to B4C reinforced aluminum metal matrix composites (MMC). Various processes like solid sintering, powder processing through ball milling, and also various thermo-mechanical processing like heat treatment, quenching are discussed. The effects on the particle size of boron carbide (B4C) reinforcement on morphology evolution and microstructure are thoroughly studied. The strengthening mechanisms of B4C reinforced Al-MMC are thoroughly reviewed and the interfacial structure in between B4C and matrix material are discussed.
Lecture notes in mechanical engineering, Oct 1, 2022
Materials Today: Proceedings, 2022
Abstract The desiccant wheel based air conditioning systems are superior over conventional vapour... more Abstract The desiccant wheel based air conditioning systems are superior over conventional vapour compression systems in terms of the efficiency and power consumption. Researchers are consistently focusing on the various aspects of the desiccant wheel such as the architecture of the wheel, effect of operating parameters on the performance of the wheel and the overall configuration of air-conditioning systems. For the simulations of the air-conditioning systems it is essential to have an accurately performing model of the desiccant wheel. Thus, for solving this purpose, the radial basis neural network is applied to forecast the performance of a desiccant wheel data. The input parameters are the inlet process air humidity, temperature, regeneration temperature, number of rotations per hour of the desiccant wheel and the ratio of the volume flow rates of the process air and the regeneration air. The output parameters are the temperature and humidity of the process air outlet stream. The model is able to predict the original data within ± 5% accuracy and the r-square value is obtained to be 0.9963. A parametric study presenting the variations of the process air outlet temperature and humidity with respect to the various input parameters is also included in the article.
Materials Today: Proceedings, 2022
Abstract Pulsating Heat Pipe (PHP) is a modification of conventional heat pipe. The oscillating m... more Abstract Pulsating Heat Pipe (PHP) is a modification of conventional heat pipe. The oscillating movements of liquid plugs and vapor bubbles in PHP result the movements between condenser and evaporator. Heat transfer in PHP is a strong function of this oscillation amplitude and frequency. Oscillating motion of the PHP is modeled as multi degree forced vibration spring mass and damper system. The oscillating motion was analyzed. The simulation work is presented for predicting the performance parameters like oscillation amplitudes and frequencies and its dependencies on various design parameters like, number of turns, effective length, inner diameter, are investigated. Water is considered as working fluid. The simulation results are in line with experimental results from literature.
The present article put forth a comprehensive review of the latest research works carried out on ... more The present article put forth a comprehensive review of the latest research works carried out on the cooling techniques for maintaining the required temperature of photovoltaic modules for achieving greater efficiency. The conventional cooling technologies such as water cooling, air cooling and water spray are little discussed in this article as these are not preferred in the present scenario due to their power requirement and complicated arrangement. The phase change materials (PCM) have evolved as a better alternative for the cooling of photovoltaic modules due to their advantageous thermo-physical properties. The recent research investigations on using phase change materials as heat absorbing material are critically reviewed in the present article. The investigations include experimental and numerical studies on single PCM, combined PCM (PCM with nanoparticles, graphite powders), PCM as secondary thermal energy storage. The critical review suggests that further research works are...
Journal of Thermal Science and Engineering Applications, 2020
Numerical modeling of multi-turn closed-loop pulsating heat pipe (CLPHP) is presented in this pap... more Numerical modeling of multi-turn closed-loop pulsating heat pipe (CLPHP) is presented in this paper for ethanol as a working fluid. Modeling is carried out for 1-mm and 2-mm ID PHP for different numbers of turns, different orientations, and at constant wall temperature boundary conditions. Momentum and heat transfer variations with time are investigated numerically solving the one-dimensional governing equations for vapor bubble and liquid plugs. Evaporation and condensation take place by heat transfer through liquid film present around the vapor bubble. The code takes into account the realistic phenomena such as vapor bubble generation, liquid plug merging, and superheating of vapor bubbles above its saturation temperature. During the merging of liquid plugs, a time-step adaptive scheme is implemented and this minimum time-step was found to be 10−7 s. Nature of flow is investigated by momentum variation plot. Model results are compared with the experimental results from literature ...
Materials Today: Proceedings, 2021
Abstract This research article gives an idea about how the pool boiling heat transfer is affected... more Abstract This research article gives an idea about how the pool boiling heat transfer is affected due to the different surface characterization. In the present, study the pool boiling heat transfer coefficient was measured of different working fluid like Isopropyl Alcohol, Acetone and Ethyl Alcohol with three different surface roughness of the copper surface. Three Copper surfaces were taken and these were polished in different emery paper like 800, 1200 and 2000 grade and surface roughness was tested on the surface tester machine and these were kept on the pool-boiling chamber and worked as the boiling surfaces. By changing different working fluid the heat transfer coefficient (HTC) was measured. It is shown that heat transfer is affected due to the change in surface roughness. Surface roughness plays an important role to produce the nucleation cavity on the heating surface as a result of which heat transfer increases in case of the treated surfaces. Heat transfer coefficient is found to be highest on 800 surface roughness and lowest on 2000 surface roughness for all the working fluid. As the density of nucleation site is more on the 800 surface roughness so HTC is more for this surface as compared to other two surfaces.
Lasers in Manufacturing and Materials Processing, 2020
The article is focused on maximizing the dimensions of a hole drilled through repetitive pulsed l... more The article is focused on maximizing the dimensions of a hole drilled through repetitive pulsed laser drilling process by employing the artificial neuro-fuzzy inference system (ANFIS) and multi-objective Genetic Algorithm (GA) with the help of the data obtained from numerical modelling. An axisymmetric two-dimensional numerical model is developed for studying this repetitive pulse laser drilling process in a cylindrical work piece to determine the drilled hole depth and radius and the temperature at the point of laser application. The governing differential equations are discretized using the Finite volume method and the Tri-Diagonal Matrix Algorithm is used to solve the resulting algebraic equations to obtain temperature distribution inside the computational domain. The Enthalpy-Porosity method is used to track the solid-liquid interface during the melting process. The laser source considered here is Gaussian and volumetric in nature and the computations are carried out taking different laser parameters like energy, number of pulses, pulse width, duty cycle and beam radius. The artificial intelligence method ANFIS is adopted to model the process using the result data obtained from numerical investigation. Separate ANFIS models are developed for the prediction of the depth, radius, center temperature, HAZ and taperness of the simulated drilled hole. These models are used as objective functions for a multi-objective genetic algorithm program to get a set optimal solutions for maximizing the depth and radius of the drilled hole and the temperature at the point of laser application in an objective to achieve highest material removal. Another section is also presented carrying out the multi-objective optimisation of considering maximiisation of radius, depth and center temperature along with minimisation of the HAZ and the tapoerness of the hole.
Materials Today: Proceedings, 2020
A 2-D transient model is explored for knowing the process of melting with laser in a Fused Quartz... more A 2-D transient model is explored for knowing the process of melting with laser in a Fused Quartz work piece. The work piece is irradiated with a single Gaussian laser pulse. The temporal variation is trapezoidal in nature. The laser source is considered as volumetric instead of surface laser source to match more closely with experiment. The convection and radiation heat losses are considered from the irradiated surface. By using the FVM (Finite Volume Method), the energy equation is discretized. The resulting algebraic equation is explained with the help of Tridiagonal matrix algorithm (TDMA) and it is to find the temperature field in the work piece. To capture the solid liquid front during the melting process the enthalpy-porosity method is used. With the help of available experimental results, the temperature field obtained is validated and a good agreement is found. The temperature field, the progress of the solid liquid front at different heating times and the melt depth is analysed to control the melting with laser intensity value.
Materials Today: Proceedings, 2019
Abstract Commercially available plywood has been used in doors, windows, interior decorations of ... more Abstract Commercially available plywood has been used in doors, windows, interior decorations of hose and commercial complexes, containers for transportation of goods. Moisture absorbs by the plywood (W) and deteriorates its physical and mechanical properties leads to degradation of its durability and reliability of the laminates. Therefore, hybridization with synthetic glass (G) fiber is one of the solutions to avoid water absorption and improves its mechanical strength of the hybrid composites in hygrothermal environment. Therefore, the present investigation emphasizes the effect of glass fiber position in the hybrid composites on its mechanical and vibrational responses as compared to plain plywood laminates. There were three types of hybrid composites were considered for this investigation. It was observed that maximum impact strength of 5.325 J/m2 was found to be in GWG2WG type hybrid composite, maximum flexural strength and modulus was found to be in G2WG2 type of hybrid composite and maximum natural frequency of 52.515 Hz was found to be in WG4W hybrid composite. However, the overall mechanical and vibrational properties were improved for G2WG2 type hybrid composites as compared to others. Therefore, the presence of glass fiber in the outer surface of the hybrid composites is the better position to achieve desirable mechanical and vibrational properties of the hybrid composites as compared to other positions. This hybrid composite may be used as alternative materials for containers in goods transport sectors.
Heat Transfer Research, 2013
Lecture Notes in Mechanical Engineering, 2020
Recent Advances in Thermofluids and Manufacturing Engineering
Lecture notes in mechanical engineering, Oct 1, 2022
Materials Today: Proceedings, 2019
This paper reviews different experimental and theoretical studies related to B4C reinforced alumi... more This paper reviews different experimental and theoretical studies related to B4C reinforced aluminum metal matrix composites (MMC). Various processes like solid sintering, powder processing through ball milling, and also various thermo-mechanical processing like heat treatment, quenching are discussed. The effects on the particle size of boron carbide (B4C) reinforcement on morphology evolution and microstructure are thoroughly studied. The strengthening mechanisms of B4C reinforced Al-MMC are thoroughly reviewed and the interfacial structure in between B4C and matrix material are discussed.
Lecture notes in mechanical engineering, Oct 1, 2022
Materials Today: Proceedings, 2022
Abstract The desiccant wheel based air conditioning systems are superior over conventional vapour... more Abstract The desiccant wheel based air conditioning systems are superior over conventional vapour compression systems in terms of the efficiency and power consumption. Researchers are consistently focusing on the various aspects of the desiccant wheel such as the architecture of the wheel, effect of operating parameters on the performance of the wheel and the overall configuration of air-conditioning systems. For the simulations of the air-conditioning systems it is essential to have an accurately performing model of the desiccant wheel. Thus, for solving this purpose, the radial basis neural network is applied to forecast the performance of a desiccant wheel data. The input parameters are the inlet process air humidity, temperature, regeneration temperature, number of rotations per hour of the desiccant wheel and the ratio of the volume flow rates of the process air and the regeneration air. The output parameters are the temperature and humidity of the process air outlet stream. The model is able to predict the original data within ± 5% accuracy and the r-square value is obtained to be 0.9963. A parametric study presenting the variations of the process air outlet temperature and humidity with respect to the various input parameters is also included in the article.
Materials Today: Proceedings, 2022
Abstract Pulsating Heat Pipe (PHP) is a modification of conventional heat pipe. The oscillating m... more Abstract Pulsating Heat Pipe (PHP) is a modification of conventional heat pipe. The oscillating movements of liquid plugs and vapor bubbles in PHP result the movements between condenser and evaporator. Heat transfer in PHP is a strong function of this oscillation amplitude and frequency. Oscillating motion of the PHP is modeled as multi degree forced vibration spring mass and damper system. The oscillating motion was analyzed. The simulation work is presented for predicting the performance parameters like oscillation amplitudes and frequencies and its dependencies on various design parameters like, number of turns, effective length, inner diameter, are investigated. Water is considered as working fluid. The simulation results are in line with experimental results from literature.
The present article put forth a comprehensive review of the latest research works carried out on ... more The present article put forth a comprehensive review of the latest research works carried out on the cooling techniques for maintaining the required temperature of photovoltaic modules for achieving greater efficiency. The conventional cooling technologies such as water cooling, air cooling and water spray are little discussed in this article as these are not preferred in the present scenario due to their power requirement and complicated arrangement. The phase change materials (PCM) have evolved as a better alternative for the cooling of photovoltaic modules due to their advantageous thermo-physical properties. The recent research investigations on using phase change materials as heat absorbing material are critically reviewed in the present article. The investigations include experimental and numerical studies on single PCM, combined PCM (PCM with nanoparticles, graphite powders), PCM as secondary thermal energy storage. The critical review suggests that further research works are...
Journal of Thermal Science and Engineering Applications, 2020
Numerical modeling of multi-turn closed-loop pulsating heat pipe (CLPHP) is presented in this pap... more Numerical modeling of multi-turn closed-loop pulsating heat pipe (CLPHP) is presented in this paper for ethanol as a working fluid. Modeling is carried out for 1-mm and 2-mm ID PHP for different numbers of turns, different orientations, and at constant wall temperature boundary conditions. Momentum and heat transfer variations with time are investigated numerically solving the one-dimensional governing equations for vapor bubble and liquid plugs. Evaporation and condensation take place by heat transfer through liquid film present around the vapor bubble. The code takes into account the realistic phenomena such as vapor bubble generation, liquid plug merging, and superheating of vapor bubbles above its saturation temperature. During the merging of liquid plugs, a time-step adaptive scheme is implemented and this minimum time-step was found to be 10−7 s. Nature of flow is investigated by momentum variation plot. Model results are compared with the experimental results from literature ...
Materials Today: Proceedings, 2021
Abstract This research article gives an idea about how the pool boiling heat transfer is affected... more Abstract This research article gives an idea about how the pool boiling heat transfer is affected due to the different surface characterization. In the present, study the pool boiling heat transfer coefficient was measured of different working fluid like Isopropyl Alcohol, Acetone and Ethyl Alcohol with three different surface roughness of the copper surface. Three Copper surfaces were taken and these were polished in different emery paper like 800, 1200 and 2000 grade and surface roughness was tested on the surface tester machine and these were kept on the pool-boiling chamber and worked as the boiling surfaces. By changing different working fluid the heat transfer coefficient (HTC) was measured. It is shown that heat transfer is affected due to the change in surface roughness. Surface roughness plays an important role to produce the nucleation cavity on the heating surface as a result of which heat transfer increases in case of the treated surfaces. Heat transfer coefficient is found to be highest on 800 surface roughness and lowest on 2000 surface roughness for all the working fluid. As the density of nucleation site is more on the 800 surface roughness so HTC is more for this surface as compared to other two surfaces.
Lasers in Manufacturing and Materials Processing, 2020
The article is focused on maximizing the dimensions of a hole drilled through repetitive pulsed l... more The article is focused on maximizing the dimensions of a hole drilled through repetitive pulsed laser drilling process by employing the artificial neuro-fuzzy inference system (ANFIS) and multi-objective Genetic Algorithm (GA) with the help of the data obtained from numerical modelling. An axisymmetric two-dimensional numerical model is developed for studying this repetitive pulse laser drilling process in a cylindrical work piece to determine the drilled hole depth and radius and the temperature at the point of laser application. The governing differential equations are discretized using the Finite volume method and the Tri-Diagonal Matrix Algorithm is used to solve the resulting algebraic equations to obtain temperature distribution inside the computational domain. The Enthalpy-Porosity method is used to track the solid-liquid interface during the melting process. The laser source considered here is Gaussian and volumetric in nature and the computations are carried out taking different laser parameters like energy, number of pulses, pulse width, duty cycle and beam radius. The artificial intelligence method ANFIS is adopted to model the process using the result data obtained from numerical investigation. Separate ANFIS models are developed for the prediction of the depth, radius, center temperature, HAZ and taperness of the simulated drilled hole. These models are used as objective functions for a multi-objective genetic algorithm program to get a set optimal solutions for maximizing the depth and radius of the drilled hole and the temperature at the point of laser application in an objective to achieve highest material removal. Another section is also presented carrying out the multi-objective optimisation of considering maximiisation of radius, depth and center temperature along with minimisation of the HAZ and the tapoerness of the hole.
Materials Today: Proceedings, 2020
A 2-D transient model is explored for knowing the process of melting with laser in a Fused Quartz... more A 2-D transient model is explored for knowing the process of melting with laser in a Fused Quartz work piece. The work piece is irradiated with a single Gaussian laser pulse. The temporal variation is trapezoidal in nature. The laser source is considered as volumetric instead of surface laser source to match more closely with experiment. The convection and radiation heat losses are considered from the irradiated surface. By using the FVM (Finite Volume Method), the energy equation is discretized. The resulting algebraic equation is explained with the help of Tridiagonal matrix algorithm (TDMA) and it is to find the temperature field in the work piece. To capture the solid liquid front during the melting process the enthalpy-porosity method is used. With the help of available experimental results, the temperature field obtained is validated and a good agreement is found. The temperature field, the progress of the solid liquid front at different heating times and the melt depth is analysed to control the melting with laser intensity value.
Materials Today: Proceedings, 2019
Abstract Commercially available plywood has been used in doors, windows, interior decorations of ... more Abstract Commercially available plywood has been used in doors, windows, interior decorations of hose and commercial complexes, containers for transportation of goods. Moisture absorbs by the plywood (W) and deteriorates its physical and mechanical properties leads to degradation of its durability and reliability of the laminates. Therefore, hybridization with synthetic glass (G) fiber is one of the solutions to avoid water absorption and improves its mechanical strength of the hybrid composites in hygrothermal environment. Therefore, the present investigation emphasizes the effect of glass fiber position in the hybrid composites on its mechanical and vibrational responses as compared to plain plywood laminates. There were three types of hybrid composites were considered for this investigation. It was observed that maximum impact strength of 5.325 J/m2 was found to be in GWG2WG type hybrid composite, maximum flexural strength and modulus was found to be in G2WG2 type of hybrid composite and maximum natural frequency of 52.515 Hz was found to be in WG4W hybrid composite. However, the overall mechanical and vibrational properties were improved for G2WG2 type hybrid composites as compared to others. Therefore, the presence of glass fiber in the outer surface of the hybrid composites is the better position to achieve desirable mechanical and vibrational properties of the hybrid composites as compared to other positions. This hybrid composite may be used as alternative materials for containers in goods transport sectors.
Heat Transfer Research, 2013
Lecture Notes in Mechanical Engineering, 2020