Modeling spherical turbines for in-pipe energy conversion

Muratoğlu, Abdullah; Demir, Muhammed Sungur

doi:10.1016/j.oceaneng.2021.110497

Cited by 11 publications

(4 citation statements)

References 49 publications

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“…Water turbine speed can be calculated from Equations 13, and 14 (Ebhota et al, 2015;Abdulah et al, 2022).…”

Section: Water Turbine Speed (N)mentioning

confidence: 99%

“…(e.g., Chen et al, 2021;Chen et al, 2013;Hasanzadeh et al, 2021;Hosain et al, 2020;Jiyun et al, 2020;Ma et al, 2020;Gandhi et al, 2019. Nowadays, computational fluid dynamics (CFD) is popularly used to calculate the performance of various types of water turbines (Abdulah and Muhammed, 2022;Zhuohuan et al, 2020;Yeo et al, 2019) and pump designs (Wang et al, 2022). Thermal analysis in the design of the heat exchanger equipment (Dmitriev et al, 2023), as well as air conditioner wind speed analysis (Patel and Dhakar, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Numerical simulation of a novel small water turbine generator for installation in a deep-flow hydroponics system

Lahamornchaiyakul

2023

Int. J. Renew. Energy Dev.

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Hydroponics systems are crucial for providing sustainable and cost-effective choices when soils are unavailable for conventional farming. The application of water flow rates within hydroponics systems to generate electricity is another idea that can be used in the field of power generation. This paper presents the determination of the mechanical power efficiency of a novel small water turbine generator for use in a deep-flow hydroponics system (DFT). The system was designed, analysed, and calculated for the most suitable geometries of the water pipeline inlet, DFT system, main structure of the PVC Tee Pipe Fitting, and a water turbine wheel using computational fluid dynamics software. The diameter of the water turbine wheel in this research was 48 mm. A DFT hydroponic system was modelled for the purposes of this research. We conducted a numerical simulation with water flow rates of 6, 8, and 10 l/min to evaluate the turbulent kinetic energy distribution in the DFT hydroponic system. The numerical simulation employed the control volume methodology, and the k-epsilon turbulence model was applied to obtain the computational conclusions. The highest torque and power that a novel small water turbine for installation in a DFT system could generate at a maximum flow rate of 0.000167 m3/s were 0.082 N.m. and 1.9568 watts, respectively. The forces generated by the fluid's speed and pressure can then be transferred to the building process of a novel small water turbine wheel. The FEA numerical result shows that the maximum value of the total deformation at a wheel speed of 228 rpm is 7.0 x 10-5 mm. The numerical simulations used in this study could potentially be used to further develop prototypes for innovative miniature water turbines that generate commercial electricity.

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“…Water turbine speed can be calculated from Equations 13, and 14 (Ebhota et al, 2015;Abdulah et al, 2022).…”

Section: Water Turbine Speed (N)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical simulation of a novel small water turbine generator for installation in a deep-flow hydroponics system

Lahamornchaiyakul

2023

Int. J. Renew. Energy Dev.

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“…According to Mosbahi et al, [4] the Lucid Spherical is another form of water turbine that is continually being developed and installed into piping systems to convert fluid flow energy into electrical energy. According to past research reports, the installation of water turbine wheels in the pipe systems, which will be installed or connected to generators primarily from the top of the pipe [5][6][7]. Over the years, there has been a wide range of researchers and research around this field.…”

Section: Introductionmentioning

confidence: 99%

“…Mabrouk et al, have improved the efficiency of the water turbines that used to be installed in a large number of piping systems. The water turbine reel model used for setting up the pipe also has different features depending on the characteristics of the completed installation [6][7][8]. The most popular tools to design and improve the efficiency of water turbines in pipes are prefabricated fluid dynamics programs such as the ANSYS FLUENT program, Autodesk Simulation CFD, Autodesk Flow Simulation, and the COMSOL Multiphysics program.…”

Section: Introductionmentioning

confidence: 99%

Free-Spinning Numerical Simulation of a Novel Vertical Axis Small Water Turbine Generator for Installation in a Water Pipeline

Lahamornchaiyakul

Kasayapanand

2023

CFDL

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The design of a novel vertical-axis small water turbine generator for installation in a pipeline is the primary purpose of this research. The water turbines have been designed as small turbines with a diameter of 48 mm, and they are installed inside a 2-inch or 50.8-mm pipe. In this work, researchers designed a 2D model of domain C and a 3D model of a small water turbine wheel, deflector, and pipeline system by using Autodesk Flow Simulation. The control volume technique was used in the numerical simulation method, and the k-epsilon turbulence model was employed to find the computational results. When the appropriate element meshing for each model section was generated for numerical simulation in Computational Fluid Dynamics (CFD), it was found that the torque from the water turbine modelling changed based on the time domains and was connected to speed relative to the developed force. The next step is to collect the produced lift force, drag force, pressure coefficient (CP), torque, rotational speed, pressure drop, and output power for each turbine using computational fluid dynamics (CFD). Results obtained from Autodesk Flow Simulation have shown that a water flow of 0.0015 m3/s and a velocity of 0.74 m/s can run on the designed vertical-axis small water turbine, delivering 6.62 W of maximum mechanical power at 423.13 RPM. The higher the wind turbine efficiency is, more energy will be developed in Thailand

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