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Numerical prediction and optimization of the performance of axial-flow hydrokinetic turbine in an array
Published in International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
2019
Abstract
Array of hydrokinetic turbines can be used to produce power from flowing rivers akin to the wind turbine farms. However, arriving at optimum configuration (location and number) of turbines through experimental or numerical routes is not easy. Hence in the present work, attempts have been made to utilize computationally less intensive model-based multivariate optimization techniques coupled with some numerical simulations to arrive at suitable turbine configurations in an array. In this work, we have modeled the complex functions, such as turbine power, non-linear interaction of turbines with wakes of preceding turbines and the area utilized by the turbines, by means of simplified mathematical treatment of response surface methodology. The present work has identified three turbine array geometries as potential configurations and based on numerical simulations and optimization techniques has arrived at pareto-domain and has ranked these pareto-solutions. Further simulations were carried out for the best configurations and the numerical results were compared with the optimization results as a part of the validation of the latter. Flow physics was analyzed and final recommendation of turbine array configuration is made. © Open Archives of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016. All rights reserved.
About the journal
JournalOpen Archives of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
PublisherInternational Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
Open AccessNo
Concepts (16)
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    Computer simulation
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    Functions
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    Multiobjective optimization
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    Numerical models
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    Rotating machinery
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    Transport properties
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    Wind turbines
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    HYDROKINETIC TURBINES
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    MATHEMATICAL TREATMENTS
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    Multivariate optimization
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    Nonlinear interactions
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    Numerical predictions
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    Optimization techniques
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    Optimum configurations
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    Response surface methodology
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    Genetic algorithms