EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF OSCILLATION PARAMETERS EFFECTS ON STABILITY DERIVATIVES OF A NACA0012 AIRFOIL

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SHOJAEEFARD M.H.; KHORAMPANAHI A.; KHEIRKHAH VATAN M.

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Journal: FLUID MECHANICS AND AERODYNAMICS JOURNAL Year:2017 | Volume:6 | Issue:1 (19) Page(s): 27-38

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Title

EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF OSCILLATION PARAMETERS EFFECTS ON STABILITY DERIVATIVES OF A NACA0012 AIRFOIL

Author(s)

SHOJAEEFARD M.H. | KHORAMPANAHI A. | KHEIRKHAH VATAN M. | Issue Writer Certificate

Keywords

STABILITY COEFFICIENTSQ1

PLUNGING MOTIONQ1

PURE-PITCH MOTIONQ1

UNSTEADY OSCILLATING FLOWQ1

STROUHAL NUMBERQ2

Abstract

In this article, a comprehensive procedure is proposed to calculate the stability derivatives of a NACA0012 airfoil by means of wind tunnel test and computational fluid dynamics (CFD). To accomplish maneuverability study and dynamic analysis of the flight vehicle, these derivatives were obtained finding the body aerodynamic responses to some specified time variant motions. Here, on the basis of linearized equations of motion, in which the aerodynamic coefficients appear explicitly, two distinct oscillating maneuvers were considered: plunging and fish-like oscillating motion. To obtain the aerodynamic responses of the moving airfoil, a CFD method based on Reynolds Averaged Navier–Stokes (RANS) equations was used with dynamic mesh technique to simulate the specified maneuvers. The computational results were then validated comparing the wind tunnel tests data of the plunging maneuver. Afterwards, the aerodynamic coefficients were calculated using the resulting loads. Finally, the effects of oscillating motion parameters variations on these coefficients are investigated, which shows that dimensionless coefficients are dependent on the oscillations amplitude and frequency. However, they are independent of the STROUHAL NUMBER in the studied range.

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APA: Copy

SHOJAEEFARD, M.H., KHORAMPANAHI, A., & KHEIRKHAH VATAN, M.. (2017). EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF OSCILLATION PARAMETERS EFFECTS ON STABILITY DERIVATIVES OF A NACA0012 AIRFOIL. FLUID MECHANICS AND AERODYNAMICS JOURNAL, 6(1 (19) ), 27-38. SID. https://sid.ir/paper/245550/en

Vancouver: Copy

SHOJAEEFARD M.H., KHORAMPANAHI A., KHEIRKHAH VATAN M.. EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF OSCILLATION PARAMETERS EFFECTS ON STABILITY DERIVATIVES OF A NACA0012 AIRFOIL. FLUID MECHANICS AND AERODYNAMICS JOURNAL[Internet]. 2017;6(1 (19) ):27-38. Available from: https://sid.ir/paper/245550/en

IEEE: Copy

M.H. SHOJAEEFARD, A. KHORAMPANAHI, and M. KHEIRKHAH VATAN, “EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF OSCILLATION PARAMETERS EFFECTS ON STABILITY DERIVATIVES OF A NACA0012 AIRFOIL,” FLUID MECHANICS AND AERODYNAMICS JOURNAL, vol. 6, no. 1 (19) , pp. 27–38, 2017, [Online]. Available: https://sid.ir/paper/245550/en

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