| Popis: |
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. |
