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Computational fluid dynamic (cfd) simulation of 3-dimensional pitching wing /’Mohammad Adzlan Shah Laili Anuar

Computational fluid dynamic (cfd) simulation of 3-dimensional pitching wing _Mohammad Adzlan Shah Laili Anuar_ A2_2009_NI

Abstract Kajian mengenai keadaan dinamik sayap delta melalui pergerakan berulang 3 dimensi menggunakan komputasi dinamik bendalir berkod fluent 6tm. Sayap yang berbentuk rata dengan hujung tajam dan sudut tepi 70 darjah, dipilih untuk experimen ini. Gabungan “meshing” dibina disekelilingnya. Pergerakan harmonik yang mudah digunakan untuk menggerakan 3 dimensi sayap bergetar ini. Sayap ini digerakan dengan titik tengah paksinya separuh dari kepanjangan sayap itu pada frekuensi dari 0.05 hingga 0.30 dan nombor reynolds diantara 9 × 104 hingga 3.5 × 105 dengan sudut serangan adalah dengan keadaan 29 ° hingga 39 ° dan 0° hingga 45° . Selain itu kes statik juga dianalisis untuk lebih pemahaman. Penyelesaian yang digunakan adalah “implicit segregated” dan rekaan pusaran adalah “Spallart Allmaras” dengan fungsi “wall” yang mengikut nilai piawaian yang selaras. Keputusan analisis yang diperoleh daripada komputasi dinamik bendalir adalah anggaran kepada data eksperimen. ______________________________________________________________________________________ A study of the dynamic behavior of the delta wing undergoing oscillatory 3D pitching motion has been studied using computational fluid dynamic (CFD) code Fluent 6 TM. A flat delta-shaped half wing with sharp leading edge and sweep angle of 70 degree was chosen in this CFD simulation. A hybrid mesh was generated in the surrounding region. A simple harmonic motion equation used to prescribe the motion of the 3D pitching wing. The wing was sinusoidally pitched about its one half chord at reduced frequencies ranging from 0.05 to 0.30 at root chord Reynolds numbers between 9 × 104 and 3.5 × 105, for angle of attack ranges of 29 ° to 39 ° and 0° to 45°. The steady case of α= 0°, 29°, 39°, 45° were also investigated. The solver used was implicit segregated and the turbulence modeling was Spallart-Almarast with standard wall function. The preliminary results show that the Computational Fluid Dynamics (CFD) results have fairly agreement with the available experimental data.

Contributor(s): Mohammad Adzlan Shah Laili Anuar - Author Primary Item Type: Final Year Project Language: English Subject Keywords: delta wing; delta-shaped ; Spallart-Almarast First presented to the public: 4/1/2008 Original Publication Date: 5/17/2019 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Aerospace Engineering Citation: Extents: Number of Pages - 103 License Grantor / Date Granted:   / ( View License ) Date Deposited 2019-05-17 11:48:26.153 Submitter: Nor Hayati Ismail

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