公开(公告)号：US09951749B2

公开(公告)日：2018-04-24

申请号：US14437641

申请日：2013-10-24

Applicant: LM WP PATENT HOLDING A/S

Inventor： Ashish Singh ,  Ganesh Ramanathan ,  Jitendra Bijlani ,  Naveen Parihar

IPC: F03D1/06 ,  F03D7/02 ,  F03D80/00

CPC classification number: F03D1/065 ,  F03D1/0641 ,  F03D1/0683 ,  F03D7/0296 ,  F03D80/00 ,  Y02E10/721 ,  Y02E10/723

Abstract: A system and method for reducing the operational noise of a blunt trailing edge of a wind turbine blade is described. The system involves increasing the trailing edge solid angle at the blade trailing edge by providing a wedge element or projection adjacent the trailing edge of the blade, the wedge element acting to provide improved mixing of the suction side and pressure side flows at the blunt trailing edge, thereby reducing the strength of vortex shedding at the trailing edge and the associated operational noise.

公开(公告)号：US20150292522A1

公开(公告)日：2015-10-15

申请号：US14437641

申请日：2013-10-24

Applicant: LM WP PATENT HOLDING A/S

Inventor： Ashish Singh ,  Ganesh Ramanathan ,  Jitendra Bijlani ,  Naveen Parihar

IPC: F04D29/66 ,  F03D1/06

CPC classification number: F03D1/065 ,  F03D1/0641 ,  F03D1/0683 ,  F03D7/0296 ,  F03D80/00 ,  Y02E10/721 ,  Y02E10/723

Abstract: A system and method for reducing the operational noise of a blunt trailing edge of a wind turbine blade is described. The system involves increasing the trailing edge solid angle at the blade trailing edge by providing a wedge element or projection adjacent the trailing edge of the blade, the wedge element acting to provide improved mixing of the suction side and pressure side flows at the blunt trailing edge, thereby reducing the strength of vortex shedding at the trailing edge and the associated operational noise.

Abstract translation: 描述了用于降低风力涡轮机叶片的钝尾缘的操作噪声的系统和方法。 该系统包括通过提供与叶片的后缘相邻的楔形元件或突起来增加叶片后缘处的后缘立体角，该楔形元件用于在钝的后缘提供改进的吸力侧和压力侧流的混合 ，从而降低后缘涡流脱落的强度和相关的操作噪声。