CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

DARIER ROTOR AND OPTIMIZED WIND TURBINES: COMPARATIVE ANALYSIS

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Rotkin Vladimir M., Sokolovsky Yuly B., Azhmukhamedov Iskandar M. DARIER ROTOR AND OPTIMIZED WIND TURBINES: COMPARATIVE ANALYSIS // Caspian journal : management and high technologies. — 2020. — №1. — pp. 111-121.

Rotkin Vladimir M. - NTA "Ecology Imperative", ricentr@mail.ru

Sokolovsky Yuly B. - NTA "Ecology Imperative", sokol1937y@gmail.com

Azhmukhamedov Iskandar M. - Astrakhan State University, iskander_agm@mail.ru

The possibilities of increasing the energy indicators of the efficiency of vertical - axis wind power plants as alternative energy sources are considered. With significant potential for scaling vertical - axis wind turbines, scientific and technical information about them in open sources is significantly limited. A methodology is proposed for assessing the energy efficiency of orthogonal rotors based on a comparative analysis by comparing design models of various types of rotors with a reference optimized wind turbine. The methodology is presented as an example of the analysis of the energy potential of the Darier rotor. The adequacy of the methodology is confirmed by the practice of using basic aerodynamic dependencies in design models, both in wind energy and in related industries. The interaction model of the airflow with the winged blade is based on the assumption of a superposition of frontal forces and lift. The energy extracted from the airflow interacting with the blade is equal to the work of the forces applied to the blade to move this blade for a full revolution of the turbine. Examination of this dependence by the extremum gives the optimal configuration of the blades. The calculation model of the interaction of the airflow with the Darier rotor is considered on the example of symmetrical blade with a circular frontal surface and a tail surface of a triangular section. The dynamic axis passing through the frontal point and the apex of the tail part divides the Darier blade into two asymmetric parts, forming a dynamic wing with variable lifting force. Energy and airflow power take - offs are determined similarly to an optimized winged blade. A comparative analysis is considered on the basis of the aerodynamic interaction of the working bodies of the installation with the airflow, taking into account the effect of scattering of the flow under the influence of the working bodies as an obstacle. A comparative calculation shows that with a multiple superiority of the optimized turbine in terms of torque, the power of the Darier equal - scale installation is comparable to the optimized turbine.

Key words: ветровая турбина, лопасть, крыло, профиль, подъемная сила, лобовое сопротивление, ротор Дарье, оптимизация, энергоэффективность, сравнительный анализ, wind turbine, blade, wing, profile, lifting force, drag, Darier rotor, optimization, energy efficiency,