scholarly journals Development of a Hybrid Method of CFD and Prescribed Wake Model for Helicopter BVI Noise Prediction

Author(s):  
Masahiko SUGIURA ◽  
Yasutada TANABE ◽  
Hideaki SUGAWARA
2011 ◽  
Author(s):  
L. Yu ◽  
W. P. Song ◽  
Jiachun Li ◽  
Song Fu

2014 ◽  
Vol 9 (11) ◽  
pp. 483-494 ◽  
Author(s):  
Chunjian Zhang ◽  
Yuxi Luo ◽  
Jiuxing Liang ◽  
Lala Li ◽  
Jiang Li

2018 ◽  
pp. 214-223
Author(s):  
AM Faria ◽  
MM Pimenta ◽  
JY Saab Jr. ◽  
S Rodriguez

Wind energy expansion is worldwide followed by various limitations, i.e. land availability, the NIMBY (not in my backyard) attitude, interference on birds migration routes and so on. This undeniable expansion is pushing wind farms near populated areas throughout the years, where noise regulation is more stringent. That demands solutions for the wind turbine (WT) industry, in order to produce quieter WT units. Focusing in the subject of airfoil noise prediction, it can help the assessment and design of quieter wind turbine blades. Considering the airfoil noise as a composition of many sound sources, and in light of the fact that the main noise production mechanisms are the airfoil self-noise and the turbulent inflow (TI) noise, this work is concentrated on the latter. TI noise is classified as an interaction noise, produced by the turbulent inflow, incident on the airfoil leading edge (LE). Theoretical and semi-empirical methods for the TI noise prediction are already available, based on Amiet’s broadband noise theory. Analysis of many TI noise prediction methods is provided by this work in the literature review, as well as the turbulence energy spectrum modeling. This is then followed by comparison of the most reliable TI noise methodologies, qualitatively and quantitatively, with the error estimation, compared to the Ffowcs Williams-Hawkings solution for computational aeroacoustics. Basis for integration of airfoil inflow noise prediction into a wind turbine noise prediction code is the final goal of this work.


2012 ◽  
Vol 3 (4) ◽  
pp. 110-112
Author(s):  
Rahul Singh ◽  
◽  
Parveen Bawa ◽  
Ranjan Kumar Thakur

2015 ◽  
Vol 135 (6) ◽  
pp. 357-365
Author(s):  
Satoshi Ihara ◽  
Hironori Itoh ◽  
Noriki Kobayashi ◽  
Yuko Inoue ◽  
Hiroaki Terato ◽  
...  

2017 ◽  
Vol 12 (2) ◽  
pp. 142
Author(s):  
Hemakumar Reddy Galiveeti ◽  
Arup Kumar Goswami ◽  
Nalin B. Dev Choudhury

2017 ◽  
Vol E100.B (3) ◽  
pp. 433-439 ◽  
Author(s):  
Zedong XIE ◽  
Xihong CHEN ◽  
Xiaopeng LIU ◽  
Lunsheng XUE ◽  
Yu ZHAO

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