AEROACOUSTIC INVESTIGATION OF FLOW OVER THE DIAMOND, CROPPED AND CRANKED ARROW DELTA WINGS USING LARGE EDDY SIMULATION APPROACH

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MOHAMMADI HOSSEIN; Ramezanizadeh Mahdi

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Journal: Modares Mechanical Engineering Year:2017 | Volume:17 | Issue:5 Page(s): 430-438

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Title

AEROACOUSTIC INVESTIGATION OF FLOW OVER THE DIAMOND, CROPPED AND CRANKED ARROW DELTA WINGS USING LARGE EDDY SIMULATION APPROACH

Author(s)

MOHAMMADI HOSSEIN | Ramezanizadeh Mahdi | Issue Writer Certificate

Keywords

AEROACOUSTICSQ1

DIAMOND DELTA WINGQ1

CROPPED DELTA WINGQ1

CRANKED ARROW DELTA WINGQ1

LARGE EDDY SIMULATION APPROACHQ2

Abstract

In this research, flow over Diamond, cropped, and CRANKED ARROW DELTA WINGs of 360 millimeters root chord length having 53o, 66o/42o, and 53o sweep back angles, respectively are investigated using the LARGE EDDY SIMULATION APPROACH. Aerodynamic coefficients of the mentioned delta wings are obtained and compared with the available experimental data which showed good agreement. The applied boundary conditions for the aeroacoustic simulations include: free stream velocity of 50 m/s, Reynolds number of 1.2 million based on the root chord, Mach number of 0.147, and angle of attack of 15o.Aerodynamic behaviors of these delta wings are severally studied but their aeroacoustic behaviors are not reported in the literature. However, aeroacoustic behaviors of these wings are highly significant considering their acoustic pollution and acoustic detection of the vehicles having these wings.Therefore, in this research, acoustic measurements of the sound received through the microphones located in the wake region of the mentioned wings are investigated considering the power spectral density, acoustic pressure, sound pressure level, and sound amplitude. Based on the obtained results, amount of sound pressure level measured through the microphone which is placed at 1.835 meter from apex of above wings in the range of Strouhal numbers of zero to 1 is 22 to 66, 10 to 73 and 9 to 44 dB, respectively which indicates that the aeroacoustic behavior of the DIAMOND DELTA WING is more efficient than the cropped and the CRANKED ARROW DELTA WINGs.

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APA: Copy

MOHAMMADI, HOSSEIN, & Ramezanizadeh, Mahdi. (2017). AEROACOUSTIC INVESTIGATION OF FLOW OVER THE DIAMOND, CROPPED AND CRANKED ARROW DELTA WINGS USING LARGE EDDY SIMULATION APPROACH. MODARES MECHANICAL ENGINEERING, 17(5 ), 430-438. SID. https://sid.ir/paper/179187/en

Vancouver: Copy

MOHAMMADI HOSSEIN, Ramezanizadeh Mahdi. AEROACOUSTIC INVESTIGATION OF FLOW OVER THE DIAMOND, CROPPED AND CRANKED ARROW DELTA WINGS USING LARGE EDDY SIMULATION APPROACH. MODARES MECHANICAL ENGINEERING[Internet]. 2017;17(5 ):430-438. Available from: https://sid.ir/paper/179187/en

IEEE: Copy

HOSSEIN MOHAMMADI, and Mahdi Ramezanizadeh, “AEROACOUSTIC INVESTIGATION OF FLOW OVER THE DIAMOND, CROPPED AND CRANKED ARROW DELTA WINGS USING LARGE EDDY SIMULATION APPROACH,” MODARES MECHANICAL ENGINEERING, vol. 17, no. 5 , pp. 430–438, 2017, [Online]. Available: https://sid.ir/paper/179187/en

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