Experimental study of tower noise on the basis of blade-tower interaction DOI Creative Commons
Hailong Yu, Zhichuan Li, Qi Guo

et al.

Frontiers in Energy Research, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 20, 2024

This paper investigates the relationship between unsteady flow and radiated noise in near wake of a wind turbine tower due to blade interaction (BTI) Wind tunnel experiments. The two-dimensional hot-wire probe is used collect instantaneous velocity field BTI region, microphone sensor sound information. effects Reynolds stress turbulent kinetic energy on are further analyzed based field. results show that blade’s passing effect causes irregular distribution vortex migration mixing tower, resulting most significant difference shear at 0.71R position during transition from an azimuthal angle 180°–210°(upward). Furthermore, strong correlation identified peak acoustic pressure value measured rotational cycle when ran up 210° azimuth angle. It deduced aerodynamic rear attributed increase momentum exchange caused by fluid doping bursting, which driven stress. Momentum induces energy, pulsations, and, thus, noise. reduction pulsation subsequently lead generated tower. Therefore, viable approach reducing involves minimizing exchange.

Language: Английский

Dynamic mask generation based on peak to correlation energy ratio for light reflection and shadow in PIV images DOI
Bernardo Luiz Harry Diniz Lemos, Rodrigo de Lima Amaral, Vítor Augusto Andreghetto Bortolin

et al.

Measurement, Journal Year: 2024, Volume and Issue: 229, P. 114352 - 114352

Published: March 2, 2024

Language: Английский

Citations

1
Experimental study of tower noise on the basis of blade-tower interaction DOI Creative Commons
Hailong Yu, Zhichuan Li, Qi Guo

et al.

Frontiers in Energy Research, Journal Year: 2024, Volume and Issue: 12

Published: Sept. 20, 2024

This paper investigates the relationship between unsteady flow and radiated noise in near wake of a wind turbine tower due to blade interaction (BTI) Wind tunnel experiments. The two-dimensional hot-wire probe is used collect instantaneous velocity field BTI region, microphone sensor sound information. effects Reynolds stress turbulent kinetic energy on are further analyzed based field. results show that blade’s passing effect causes irregular distribution vortex migration mixing tower, resulting most significant difference shear at 0.71R position during transition from an azimuthal angle 180°–210°(upward). Furthermore, strong correlation identified peak acoustic pressure value measured rotational cycle when ran up 210° azimuth angle. It deduced aerodynamic rear attributed increase momentum exchange caused by fluid doping bursting, which driven stress. Momentum induces energy, pulsations, and, thus, noise. reduction pulsation subsequently lead generated tower. Therefore, viable approach reducing involves minimizing exchange.

Language: Английский

Citations

0