Experimental study on frequency characteristics of the actuations produced by plasma synthetic jet actuator and its geometric effects

2021 ◽  
Vol 33 (6) ◽  
pp. 067113
Author(s):  
Xi Geng ◽  
Weilin Zhang ◽  
Zhiwei Shi ◽  
Zheng Li ◽  
Qijie Sun ◽  
...  
Keyword(s):  
Experimental Study ◽  
Frequency Characteristics ◽  
Synthetic Jet ◽  
Synthetic Jet Actuator ◽  
Geometric Effects

scholarly journals Experimental study on the characteristics of a two-electrode plasma synthetic jet actuator

2014 ◽  
Vol 63 (19) ◽  
pp. 194702
Author(s):  
Wang Lin ◽  
Xia Zhi-Xun ◽  
Luo Zhen-Bing ◽  
Zhou Yan ◽  
Zhang Yu
Keyword(s):  
Experimental Study ◽  
Synthetic Jet ◽  
Synthetic Jet Actuator

Experimental Study on the Use of Synthetic Jet Actuators for Lift Control

2016 ◽  
Author(s):  
Ricardo B. Torres ◽  
Gustaaf B. Jacobs ◽  
Michael J. Cave
Keyword(s):  
Experimental Study ◽  
Reynolds Number ◽  
Shear Layer ◽  
Synthetic Jet ◽  
Inlet Guide Vane ◽  
Trailing Edge ◽  
Synthetic Jet Actuator ◽  
Synthetic Jet Actuators ◽  
Jet Actuators ◽  
Lift Control

An experimental study on the use of synthetic jet actuators for lift control on a generic compressor airfoil is conducted. A wind tunnel model of a NACA 65(2)-415 airfoil, representative of the cross section of an Inlet Guide Vane (IGV) in an industrial gas compressor, is 3D-printed. Nine synthetic jet actuators are integrated within a planar wing section with their slots covering 61% of pressure side of the airfoil span, located 13% chord upstream of the trailing edge. The Helmholtz frequency of the slot is matched closely with the piezoelectric element material frequency. The slot is designed so that the bi-morph actuation creates a jet normal to the airfoil surface. By redirecting or vectoring the shear layer at the trailing edge, the synthetic jet actuator increases lift and decreases drag on the airfoil without a mechanical device or flap. Tests are performed at multiple Reynolds number ranging from Re=150,000 to Re=450,000. The increased lift of the integrated synthetic jet actuator is dependent on the Reynolds number and free stream velocity, the actuation frequency, and angle of attack. For actuation at 1450 Hz the synthetic jet actuator increases lift up to 7%. The synthetic jet increases L/D up to 15%. Velocity contours obtained through PIV show that the synthetic jet turns the trailing edge shear layer similar to a Gurney flap.

Analytic model and frequency characteristics of plasma synthetic jet actuator

2015 ◽  
Vol 27 (2) ◽  
pp. 027105 ◽  
Author(s):  
Hao-hua Zong ◽  
Yun Wu ◽  
Ying-hong Li ◽  
Hui-min Song ◽  
Zhi-bo Zhang ◽  
...  
Keyword(s):  
Frequency Characteristics ◽  
Synthetic Jet ◽  
Analytic Model ◽  
Synthetic Jet Actuator

The Design and Experimental Study of a Multi- Diaphragm Piezoelectric Synthetic Jet Actuator

2007 ◽  
Author(s):  
Jinglei Xu ◽  
Chao Li ◽  
Jiang Sha ◽  
Kunyuan Zhang
Keyword(s):  
Experimental Study ◽  
Synthetic Jet ◽  
Experimental Result ◽  
Synthetic Jet Actuator ◽  
Velocity Magnitude ◽  
Optimum Diameter ◽  
Optimum Depth ◽  
Hotwire Anemometry ◽  
Better Than ◽  
Made In

Considering the shortcoming and inability of the conventional piezoelectric synthetic jet actuator (PE-SJA), a novel multi-diaphragm PE-SJA was designed and made in this paper, and some detailed experimental study was carried out upon it. Using the hotwire anemometry, the optimum resonance frequency of the actuator was obtained. Then, under this special frequency, velocity magnitude was measured at different positions along the axis of the orifice. And then the orifice exit velocity of different numbers of diaphragm was measured, analysized and compared, which showed that the mean and peak axis velocity of one diaphragm PE-SJA were only the half of those of the five diaphragms PE-SJA., while the performance of three diaphragms PE-SJA was almost the same as that of the five diaphragms., which meant that although the performance of the PE-SJA increased with the number of the piezoelectric diaphragm, it was not in linearly ways. From the experimental result it was also shown that: For frequency f = 560Hz, the optimum diameter and depth of the orifice was 2.5mm and 2mm, respectively. Therefore, the optimum depth/diameter ratio was 0.8 for the present actuator and frequency. And then the performance of the multi-diaphragm PE-SJA with taper-jet exit orifice was much better than that of the straight orifice. Finally, the PIV was used to measure the structure of vortex of the flowfield.

Study on inner characteristics of plasma synthetic jet actuator and geometric effects

2020 ◽  
Vol 105 ◽  
pp. 106044 ◽  
Author(s):  
Weilin Zhang ◽  
Xi Geng ◽  
Zhiwei Shi ◽  
Shoulin Jin
Keyword(s):  
Synthetic Jet ◽  
Synthetic Jet Actuator ◽  
Geometric Effects
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