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Steady flow over triangular extended solid attached to square cylinder – A method to reduce drag

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Numerical analysis of two dimensional steady flows over a triangular extended solid (thorn) attached to square cylinder positioned at front stagnation point and at rear stagnation point separately is reported at low Reynolds number (Re = 40). The variation of thorn length (l0 = 0.2,0.4 & 0.6) & inclination angle (H= 5, 10, 15 & 20) and its effect on the drag, pressure, shear stress, boundary layer as well as on the inertia force and viscous force are of interest. There is comparatively large variation on drag when the thorn is placed at the front side instead of placing at rear. The recirculation length is remained constant by varying the length and inclination of the thorn irrespective of its position. The variation of drag is comparatively less by changing thorn inclination. It is found that the drag is minimized by 2–3% compared to square model.

KEYWORDS
Square cylinder;Extended solid (thorn);Low Reynolds number;Local Reynolds number;Drag reduction

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Informasi Detail

Judul Seri

Ain Shams Engineering Journal

No. Panggil

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Penerbit

: Elsevier Science Inc.., 2015

Deskripsi Fisik

Ain Shams Engineering Journal (2015) 6, 929–938

Bahasa

English

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

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