Volume 23, Issue 8 (August 2023)
Modares Mechanical Engineering 2023, 23(8): 455-465 |
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Kaviani H, Bashtalam E. Investigating the Effect of Icing on Aerodynamics and Aeroacoustics of an Airfoil. Modares Mechanical Engineering 2023; 23 (8) :455-465
URL: http://mme.modares.ac.ir/article-15-64561-en.html
URL: http://mme.modares.ac.ir/article-15-64561-en.html
1- Department of Mechanical Engineering, Technical and Engineering Faculty, Malayer University , hamid_kaviani@ut.ac.ir
2- Department of Mechanical Engineering, Technical and Engineering Faculty, Malayer University
2- Department of Mechanical Engineering, Technical and Engineering Faculty, Malayer University
Abstract: (1902 Views)
| Icing is a common issue in blowers, wind turbines and flying vehicles. This phenomenon has a great impact on reducing aerodynamic performance, increasing noise pollution and imposing extra load on the structure. In this article, the effect of icing on the aerodynamic and aeroacoustic performance of the Naka-0012 airfoil has been studied. Transient and three-dimensional Navier-Stokes equations have been used for aerodynamic prediction. Sound wave is calculated using Fox-Williams and Hawkins equations. Simulation of eddies has been done using LES method and WALE subgrid scale model. First, all calculation methods have been validated using experimental data. Then the effect of icing on airfoil performance has been studied. Flow vortices have been studied and sound production mechanisms corresponding to these vortices have been identified. The results show that icing reduces the lift force by 9.7% and increases the drag force by 3.8 times. In the range of maximum human hearing sensitivity (one to five kHz), the average amount of sound increase is around 9 dB, which is a significant amount in terms of noise pollution. The increase in sound caused by icing can be used to identify and deal with this phenomenon faster and reduce its risks. |
Article Type: Original Research |
Subject:
Aerodynamics
Received: 2022/10/2 | Accepted: 2023/06/12 | Published: 2023/08/1
Received: 2022/10/2 | Accepted: 2023/06/12 | Published: 2023/08/1
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