Priyam Deka | Gdansk University of Technology (original) (raw)
Papers by Priyam Deka
In this era of technological advancement, the demand for energy requirements is increasing global... more In this era of technological advancement, the demand for energy requirements is increasing globally. With a limited stock of fossil fuels and the pollution issue related to the burning of these fuels, the world needs to find an alternative of it, which must be cleaner and greener. This is where wind energy comes in and plays a vital role as it is a clean source and has a very promising future in the global energy sector. Savonius turbine is a type of vertical axis wind turbine (VAWT) which is predominantly rotated by the drag force from the wind. It is self starting and can extract wind energy from low wind speeds and is very practical to install it in crowded places due to its compact geometry. This thesis is a review of the previous works presented by different authors. This project aims at discovering the influence of various design and performance parameters (aspect ratio, overlap ratio, tip speed ratio, blade shape, number of rotor blades and number of stages), turbulence models and turbine geometries on the performance of Savonius vertical axis wind turbine. A conventional Savonius vertical axis wind turbine (VAWT) with aspect ratio of 1, overlap ratio of 0.15 and TSR of 0.8 shows the maximum coefficient of power (CP) The performance of conventional rotors can be enhanced by use of helical rotors; multi-staging and other modified blade geometries. Helical rotors with blade twist angle of 90 0 are better performing rotors than the conventional rotors. Modified Bach type rotor with a blade arc angle of 135 0 , aspect ratio of 1.1, overlap ratio of 0.1 and at tip speed ratio (TSR)= 0.8 show the maximum coefficient of power (CP) of 0.30. The results of numerical analyses were compared with that of the experimental data and it is found that for 2-D numerical analyses, realizable k-ɛ turbulence model shows better accuracy of estimation and for 3-D analyses, SST kω turbulence model shows better agreement with the experimental data.
International Reseach Journal of Modernization in Engineering and Science, 2022
Energy security is much of a concern in the developing world as the prices of petroleum products ... more Energy security is much of a concern in the developing world as the prices of petroleum products is rising and the stocks are depleting. Research oriented approaches for searching new and better fuel alternatives is of utmost importance in today's day and age. Biodiesel is such a potential fuel which can be used as an alternative for the conventional diesel, if not completely replace it. This work is focused on producing biodiesel from Chia seeds through the process of transesterification and blending it with conventional diesel. Biodiesel-diesel blends of B5, B10 and B20 are then tested for their performance in a compression ignition engine and the results are compared with the performance of conventional diesel in the same engine. The conventional diesel outperforms all the blends with regards to brake thermal efficiency, indicated power, volumetric efficiency, mechanical efficiency and overall efficiency. However, the B5 blend shows close resemblance to conventional diesel with regards to all these performance parameters.
Asian journal of convergence in technology, Apr 27, 2022
In today's day and age of technological advancement, manufacturing plays a vital role in safeguar... more In today's day and age of technological advancement, manufacturing plays a vital role in safeguarding our present and building our future. The different ways of machining materials has evolved gradually from the Stone Age to the Iron Age and so on and has reached a point where human civilization has achieved creation of unimaginable technologies to build this world in a better and more efficient way. Additive manufacturing is such an aspect of this technological milestone which is developing vastly. This is a work on additive manufacturing technologies, specifically the use of Selective Laser Melting methods and a discussion of different aspects related to it, such as the processing parameters and the material properties and characteristics of the fabricated part. In simple words, Selective Laser Melting is an Additive Manufacturing method where a high power laser beam is used to melt powdered form of material and put this molten material layer by layer to fabricate the desired part. This review work enlightens the use of Selective Laser Melting in today's world. This review work provides vital information with regards to the parameters, material properties, material selection and an overview of additive manufacturing specifically the selective laser melting method.
International Journal of Innovative Science and Research Technology, 2022
In this era of technological advancement, the demand for energy requirements is increasing global... more In this era of technological advancement, the demand for energy requirements is increasing globally. With a limited stock of fossil fuels and the pollution issue related to the burning of these fuels, the world needs to find an alternative of it, which must be cleaner and greener. This is where wind energy comes in and plays a vital role as it is a clean source and has a very promising future in the global energy sector. Savonius turbine is a type of vertical axis wind turbine (VAWT) which is predominantly rotated by the drag force from the wind. It is self starting and can extract wind energy from low wind speeds and is very practical to install it in crowded places due to its compact geometry. This thesis is a review of the previous works presented by different authors. This project aims at discovering the influence of various design and performance parameters (aspect ratio, overlap ratio, tip speed ratio, blade shape, number of rotor blades and number of stages), turbulence models and turbine geometries on the performance of Savonius vertical axis wind turbine. A conventional Savonius vertical axis wind turbine (VAWT) with aspect ratio of 1, overlap ratio of 0.15 and TSR of 0.8 shows the maximum coefficient of power (CP) The performance of conventional rotors can be enhanced by use of helical rotors; multi-staging and other modified blade geometries. Helical rotors with blade twist angle of 90 0 are better performing rotors than the conventional rotors. Modified Bach type rotor with a blade arc angle of 135 0 , aspect ratio of 1.1, overlap ratio of 0.1 and at tip speed ratio (TSR)= 0.8 show the maximum coefficient of power (CP) of 0.30. The results of numerical analyses were compared with that of the experimental data and it is found that for 2-D numerical analyses, realizable k-ɛ turbulence model shows better accuracy of estimation and for 3-D analyses, SST kω turbulence model shows better agreement with the experimental data.
Due to many unexpected harsh environmental conditions of the road, automotive wheel is a vital pa... more Due to many unexpected harsh environmental conditions of the road, automotive wheel is a vital part to ensure the vehicle safety and performance. ISO-3006 provides a comprehensive fatigue life experiment to validate proper wheels. This article is investigating a car wheel under the dynamic radial fatigue test of the ISO standard. This study aims to compare five different commercially available materials of the wheel concerning the ISO test conditions. As the wheel rim weight has a great impact on the performance of the vehicle, this comparison is considering the weight of the wheel made of various materials. The test is simulated via ANSYS software with a dens mesh to ensure the highest possible accuracy of results. Among selected materials, the CFRP is demonstrating the best fatigue strength to weight ratio in ISO radial fatigue test.
International journal of engineering and technology, 2020
With the technological advancement in the automotive sector, the vehicles are crossing their limi... more With the technological advancement in the automotive sector, the vehicles are crossing their limits in every aspect. Hence, the subsequent improvement related to the wheel and braking of the vehicle is very crucial as the wheel carries the whole weight of the vehicle in dynamic and harsh environmental conditions. ISO-3006 is a comprehensive test for wheel standardization, and the dynamic cornering fatigue test is a part of this standard. This test investigates the wheel fatigue under bending torque. When a car turns, the bending moment is applied to the wheel via drive axle. In this paper, we investigate the test on a designed wheel with five different materials via ANSYS software. As the wheel weight has a direct impact on vehicle performance, selecting lighter materials is extremely important. The result of this research indi-cates the area of maximum fatigue stresses, and also it provides a comparison between five popular materials for the wheel rim considering the fatigue life a...
Carbon: Science and Technology, 2019
Energy is of vital importance to the society and human life. The world is entering into a period ... more Energy is of vital importance to the society and human life. The world is entering into a period of declining non-renewable energy resources. Bio-diesel seems to be a good remedy for this problem. Microalgae is a potential source for the continuous production of biodiesel. Moreover, the productivity of biodiesel from microalgae is much higher compared to other sources of biodiesel. The present study deals with the performance characteristic of the Algae biodiesel run diesel engine. For analysis, two biodiesel blends namely, B10 and B20 (10 % and 20 % algae oil respectively mixed with diesel) were selected. The study revealed that with increasing engine load, the brake thermal efficiency was enhanced for B10 blend compared to diesel. For 75 % load, the brake thermal efficiency of B10 blend was found to be around 21.8 %. Moreover, the brake specific fuel consumption of B10 blend was observed to be very less as compared to diesel and B20 blend. In addition, at 75 % load, the mechanical...
In this era of technological advancement, the demand for energy requirements is increasing global... more In this era of technological advancement, the demand for energy requirements is increasing globally. With a limited stock of fossil fuels and the pollution issue related to the burning of these fuels, the world needs to find an alternative of it, which must be cleaner and greener. This is where wind energy comes in and plays a vital role as it is a clean source and has a very promising future in the global energy sector. Savonius turbine is a type of vertical axis wind turbine (VAWT) which is predominantly rotated by the drag force from the wind. It is self starting and can extract wind energy from low wind speeds and is very practical to install it in crowded places due to its compact geometry. This thesis is a review of the previous works presented by different authors. This project aims at discovering the influence of various design and performance parameters (aspect ratio, overlap ratio, tip speed ratio, blade shape, number of rotor blades and number of stages), turbulence models and turbine geometries on the performance of Savonius vertical axis wind turbine. A conventional Savonius vertical axis wind turbine (VAWT) with aspect ratio of 1, overlap ratio of 0.15 and TSR of 0.8 shows the maximum coefficient of power (CP) The performance of conventional rotors can be enhanced by use of helical rotors; multi-staging and other modified blade geometries. Helical rotors with blade twist angle of 90 0 are better performing rotors than the conventional rotors. Modified Bach type rotor with a blade arc angle of 135 0 , aspect ratio of 1.1, overlap ratio of 0.1 and at tip speed ratio (TSR)= 0.8 show the maximum coefficient of power (CP) of 0.30. The results of numerical analyses were compared with that of the experimental data and it is found that for 2-D numerical analyses, realizable k-ɛ turbulence model shows better accuracy of estimation and for 3-D analyses, SST kω turbulence model shows better agreement with the experimental data.
International Reseach Journal of Modernization in Engineering and Science, 2022
Energy security is much of a concern in the developing world as the prices of petroleum products ... more Energy security is much of a concern in the developing world as the prices of petroleum products is rising and the stocks are depleting. Research oriented approaches for searching new and better fuel alternatives is of utmost importance in today's day and age. Biodiesel is such a potential fuel which can be used as an alternative for the conventional diesel, if not completely replace it. This work is focused on producing biodiesel from Chia seeds through the process of transesterification and blending it with conventional diesel. Biodiesel-diesel blends of B5, B10 and B20 are then tested for their performance in a compression ignition engine and the results are compared with the performance of conventional diesel in the same engine. The conventional diesel outperforms all the blends with regards to brake thermal efficiency, indicated power, volumetric efficiency, mechanical efficiency and overall efficiency. However, the B5 blend shows close resemblance to conventional diesel with regards to all these performance parameters.
Asian journal of convergence in technology, Apr 27, 2022
In today's day and age of technological advancement, manufacturing plays a vital role in safeguar... more In today's day and age of technological advancement, manufacturing plays a vital role in safeguarding our present and building our future. The different ways of machining materials has evolved gradually from the Stone Age to the Iron Age and so on and has reached a point where human civilization has achieved creation of unimaginable technologies to build this world in a better and more efficient way. Additive manufacturing is such an aspect of this technological milestone which is developing vastly. This is a work on additive manufacturing technologies, specifically the use of Selective Laser Melting methods and a discussion of different aspects related to it, such as the processing parameters and the material properties and characteristics of the fabricated part. In simple words, Selective Laser Melting is an Additive Manufacturing method where a high power laser beam is used to melt powdered form of material and put this molten material layer by layer to fabricate the desired part. This review work enlightens the use of Selective Laser Melting in today's world. This review work provides vital information with regards to the parameters, material properties, material selection and an overview of additive manufacturing specifically the selective laser melting method.
International Journal of Innovative Science and Research Technology, 2022
In this era of technological advancement, the demand for energy requirements is increasing global... more In this era of technological advancement, the demand for energy requirements is increasing globally. With a limited stock of fossil fuels and the pollution issue related to the burning of these fuels, the world needs to find an alternative of it, which must be cleaner and greener. This is where wind energy comes in and plays a vital role as it is a clean source and has a very promising future in the global energy sector. Savonius turbine is a type of vertical axis wind turbine (VAWT) which is predominantly rotated by the drag force from the wind. It is self starting and can extract wind energy from low wind speeds and is very practical to install it in crowded places due to its compact geometry. This thesis is a review of the previous works presented by different authors. This project aims at discovering the influence of various design and performance parameters (aspect ratio, overlap ratio, tip speed ratio, blade shape, number of rotor blades and number of stages), turbulence models and turbine geometries on the performance of Savonius vertical axis wind turbine. A conventional Savonius vertical axis wind turbine (VAWT) with aspect ratio of 1, overlap ratio of 0.15 and TSR of 0.8 shows the maximum coefficient of power (CP) The performance of conventional rotors can be enhanced by use of helical rotors; multi-staging and other modified blade geometries. Helical rotors with blade twist angle of 90 0 are better performing rotors than the conventional rotors. Modified Bach type rotor with a blade arc angle of 135 0 , aspect ratio of 1.1, overlap ratio of 0.1 and at tip speed ratio (TSR)= 0.8 show the maximum coefficient of power (CP) of 0.30. The results of numerical analyses were compared with that of the experimental data and it is found that for 2-D numerical analyses, realizable k-ɛ turbulence model shows better accuracy of estimation and for 3-D analyses, SST kω turbulence model shows better agreement with the experimental data.
Due to many unexpected harsh environmental conditions of the road, automotive wheel is a vital pa... more Due to many unexpected harsh environmental conditions of the road, automotive wheel is a vital part to ensure the vehicle safety and performance. ISO-3006 provides a comprehensive fatigue life experiment to validate proper wheels. This article is investigating a car wheel under the dynamic radial fatigue test of the ISO standard. This study aims to compare five different commercially available materials of the wheel concerning the ISO test conditions. As the wheel rim weight has a great impact on the performance of the vehicle, this comparison is considering the weight of the wheel made of various materials. The test is simulated via ANSYS software with a dens mesh to ensure the highest possible accuracy of results. Among selected materials, the CFRP is demonstrating the best fatigue strength to weight ratio in ISO radial fatigue test.
International journal of engineering and technology, 2020
With the technological advancement in the automotive sector, the vehicles are crossing their limi... more With the technological advancement in the automotive sector, the vehicles are crossing their limits in every aspect. Hence, the subsequent improvement related to the wheel and braking of the vehicle is very crucial as the wheel carries the whole weight of the vehicle in dynamic and harsh environmental conditions. ISO-3006 is a comprehensive test for wheel standardization, and the dynamic cornering fatigue test is a part of this standard. This test investigates the wheel fatigue under bending torque. When a car turns, the bending moment is applied to the wheel via drive axle. In this paper, we investigate the test on a designed wheel with five different materials via ANSYS software. As the wheel weight has a direct impact on vehicle performance, selecting lighter materials is extremely important. The result of this research indi-cates the area of maximum fatigue stresses, and also it provides a comparison between five popular materials for the wheel rim considering the fatigue life a...
Carbon: Science and Technology, 2019
Energy is of vital importance to the society and human life. The world is entering into a period ... more Energy is of vital importance to the society and human life. The world is entering into a period of declining non-renewable energy resources. Bio-diesel seems to be a good remedy for this problem. Microalgae is a potential source for the continuous production of biodiesel. Moreover, the productivity of biodiesel from microalgae is much higher compared to other sources of biodiesel. The present study deals with the performance characteristic of the Algae biodiesel run diesel engine. For analysis, two biodiesel blends namely, B10 and B20 (10 % and 20 % algae oil respectively mixed with diesel) were selected. The study revealed that with increasing engine load, the brake thermal efficiency was enhanced for B10 blend compared to diesel. For 75 % load, the brake thermal efficiency of B10 blend was found to be around 21.8 %. Moreover, the brake specific fuel consumption of B10 blend was observed to be very less as compared to diesel and B20 blend. In addition, at 75 % load, the mechanical...