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بررسی عددی و تحلیلی جریان آشفته بر روی یک ایرفویل در زوایای مختلف حمله و بهینهسازی زاویه واماندگی
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Abstract: (978 Views) |
| In this paper, the numerical and analytical turbulent flow over an airfoil at different angles to optimize the angle of attack and paid exhaustion occurs. In order to validate the results of the present study compared the numerical results with experimental results are in good agreement. The results show that the numerical analysis of the flow of ideal achieves infinite speed and zero speed is impossible due to network problems. The angle of attack up to 12 degree of separation tolerated. The results showed that the maximum lift coefficient for the airfoil was 1/53, and the best efficiency ratio (for the post) is obtained on 3 degree angle of attack, so the proposed installation angle of 3 degrees. Also in this study for improvement of stalling angle of drastic changes, leading edge to the trailing edge and help smoothing method is reduced. The results showed that the improved airfoil profiles stall angle of 13 degrees and a maximum lift coefficient increased to 1/67. |
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| Keywords: Airfoil, turbulence, stalls angle, Comsol Software, optimization |
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Full-Text [PDF 976 kb]
(199 Downloads)
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Type of Study: Research |
Subject:
سایر (برق، عمران، معماری، هیدرولیک، ماشین آلات کشاورزی، ساخت و تولید، متالوژی، ریاضی، فیزیک، شیمی و ...)
Received: 2017/09/9 | Accepted: 2017/12/8 | Published: 2018/09/19
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