Numerical study of blowing and suction slot geometry optimization on NACA 0012 airfoil

作者：Yousefi Kianoosh^*; Saleh Reza; Zahedi Peyman

来源：Journal of Mechanical Science and Technology, 2014, 28(4): 1297-1310.

DOI：10.1007/s12206-014-0119-1

• Flow control
• Jet width
• Lift and drag coefficients
• Slot geometry optimization
• Suction
• Blowing

The effects of jet width on blowing and suction flow control were evaluated for a NACA 0012 airfoil. RANS equations were employed in conjunction with a Menter's shear stress turbulent model. Tangential and perpendicular blowing at the trailing edge and perpendicular suction at the leading edge were applied on the airfoil upper surface. The jet widths were varied from 1.5% to 4% of the chord length, and the jet velocity was 0.3 and 0.5 of the free-stream velocity. Results of this study demonstrated that when the blowing jet width increases, the lift-to-drag ratio rises continuously in tangential blowing and decreases quasi-linearly in perpendicular blowing. The jet widths of 3.5% and 4% of the chord length are the most effective amounts for tangential blowing, and smaller jet widths are more effective for perpendicular blowing. The lift-to-drag ratio improves when the suction jet width increases and reaches its maximum value at 2.5% of the chord length.

• 出版日期2014-4