A piezoelectrically actuated micro synthetic jet for active flow control

Lee, Chester; Hong, Guang; Ha, Q.P.; Mallinson, S. G.

doi:10.1016/s0924-4247(03)00267-x

Cited by 116 publications

(59 citation statements)

References 20 publications

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“…Research on flow control systems has considered piezoelectric diaphragms to deliver enough airflow speed for synthetic jets and achieve proper flow control [31,67].…”

Section: Applicationsmentioning

confidence: 99%

Smart Actuation for Helicopter Rotorblades

Paternoster¹,

Loendersloot²,

Boer³

et al. 2012

Smart Actuation and Sensing Systems - Recent Advances and Future Challenges

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“…Research on flow control systems has considered piezoelectric diaphragms to deliver enough airflow speed for synthetic jets and achieve proper flow control [31,67].…”

Section: Applicationsmentioning

confidence: 99%

Smart Actuation for Helicopter Rotorblades

Paternoster¹,

Loendersloot²,

Boer³

et al. 2012

Smart Actuation and Sensing Systems - Recent Advances and Future Challenges

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“…These experiments demonstrated the importance of vortex ring pinch off in self-propelled vehicles. Synthetic jet in air is also intensively researched [15][16][17][18][19][20][21][22]. The geometrical parameters have a great effect on its fluidic characteristic.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the influence of nozzle geometrical parameters on thrust of synthetic jet underwater

Geng

Yang

2018

Sensors and Actuators A: Physical

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“…Therefore, the proper frequency is an important parameter to realize the flow separation control successfully. After modifying the flow structure in the boundary layer under an adverse pressure gradient using synthetic jets, Lee et al (2003) and Guang et al (2002) pointed out that the synthetic jet frequency played an important role in affecting boundary layer separation. Qayoum et al (2010) carried out experiments to understand how the amplitude modulation and the frequencies, which were 10Hz, 20Hz and 50Hz, affected the flow structure of synthetic jets.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Low Pressure Turbine Blade by Using Synthetic Jets

Liu

Wang

2011

Engineering Applications of Computational Fluid Mechanics

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ABSTRACT:In order to investigate the effect of flow separation control using synthetic jets on the performance of a low pressure turbine (LPT) blade, the three-dimensional viscous unsteady Reynolds-averaged Navier-Stokes equations are solved to predict the unsteady flow characteristics of the LPT Pak-B blade with and without synthetic jets. For turbulent flow, shear stress transport (SST) turbulence model coupled with Langtry-Menter transition model is adopted. The numerical results show that the turbulence simulations can describe the flow structure effectively and capture the flow separation and reattachment locations on the suction surface of the Pak-B blade. At low Reynolds numbers, using synthetic jet can effectively suppress or even eliminate the flow separation on the blade suction surface. At Re =25,000 and freestream turbulence intensity FSTI =0.08%, there is a synthetic jet frequency in the range from 0Hz to 50Hz for optimal flow control of the LPT blade. The total pressure loss of the LPT blade decreases by 59%, compared with that of non-synthetic jet blade at the blowing ratio B=2.0 and the optimal jet frequency f=20Hz. In addition, the flow control mechanism of synthetic jets is revealed in detail. A hysteresis is observed in the process of flow control by using synthetic jets to reattach the blade boundary layer flow separation. The hysteresis in the blowing process of synthetic jets and the acquirement of enough time to restrain the separation in the sucking process are the main factors which affect the selection of synthetic jet frequency.

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A piezoelectrically actuated micro synthetic jet for active flow control

Cited by 116 publications

References 20 publications

Smart Actuation for Helicopter Rotorblades

Smart Actuation for Helicopter Rotorblades

Numerical investigation of the influence of nozzle geometrical parameters on thrust of synthetic jet underwater

Performance Improvement of Low Pressure Turbine Blade by Using Synthetic Jets

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