A Novel Power Generation Technique Using Modified Savonius Wind Turbine From The Relative Wind Energy Of Moving Vehicles | Shiv Nadar University
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A Novel Power Generation Technique Using Modified Savonius Wind Turbine From The Relative Wind Energy Of Moving Vehicles

Fluctuating crude oil price has stirred the focus of global investors towards the second-largest freely accessible renewable resource, the wind energy. The potential of wind power generation on land and near off-shore is estimated to 72 TWh which is about five times the world’s current energy usage in all forms. Therefore, it is imperative to invest heavily in these developing resources and to harvest the abundantly available sustainable source of energy efficiently. In this research, an extensive effort has been made to harness usable wind power from the wake of speeding vehicles using a self-starting vertical axis Savonius wind turbine. Energy production from moving vehicles has attracted much attention in recent days, which is a novel yet complicated way towards green energy production. A speeding train generates an enormous gust of wind around it and has a substantial amount of kinetic energy left in it, which is a potential wind energy resource that can be harvested. The wind power was harvested by placing the turbine in close proximity within the slipstream region of the train, tested under both open-atmosphere and tunnel conditions. Computer-oriented fluid-solid integrated models were developed by implementing all physically realistic conditions which were a very challenging task. The 2D numerical study was modeled using open source CFD toolbox, OpenFOAM to perform coupled translation motion of the train and flow driven rotation of the turbine. In this study, two different blade models were proposed and the performances of the two different modified turbine models were analyzed and compared with the traditional blade model for specified overlapping ratio, TSR, and Reynolds number. The results in terms coefficient of moment, pressure variation over the blades, and power coefficient compare well with the existing literature. Subsequently, Savonius wind turbine array studies were performed and very interesting positive interactions among the turbines were observed. Savonius wind turbines are drag type turbines with low efficiency, but an effective arrangement of Savonius turbines in close proximity amplifies positive coupling among the turbines and enhances the integrated efficiency. The positive interactions between the turbines were assessed considering favorable separation distance, linear and oblique turbine arrangements, co-rotational, and counter-rotational arrangements. Parametric sensitivity analysis was conducted to obtain the optimal performance of the turbine, energy recovery from tunnel condition, wind turbine array, and torque generation from two crossing trains as a very special case which is not reported in any open literature

Department: 
Mechanical Engineering
Year: 
2020
Student Name: 
L.G. Praveen Laws
Faculty Advisor: 

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