Three-dimensional Flow Field Characteristics of a Normal Slot Plasma Synthetic Jet Actuator

Cheng, L.; Sun, X. L.; Ma, S.

doi:10.47176/jafm.17.7.2463

Three-dimensional Flow Field Characteristics of a Normal Slot Plasma Synthetic Jet Actuator

Document Type : Regular Article

Authors

¹ College of Aeronautical Engineering, Civil Aviation Flight University of China, Guanghan, 618307, China

² College of Flight Technology, Civil Aviation Flight University of China, Guanghan, 618307,

10.47176/jafm.17.7.2463

Abstract

In this work, to comprehensively analyze the flow field characteristics of a normal slot plasma synthetic jet actuator, three-dimensional simulation models are established for both normal slot and normal orifice actuators. A detailed comparative analysis of the three-dimensional flow field characteristics of these two actuators is performed. The results indicate that the motion shockwaves and jets generated by the normal slot actuator cover a larger and more uniform region, showing planar characteristics and excellent flow control uniformity. The total pressure ratio for the normal slot actuator is 3.59, significantly higher than the value of 3.50 for the normal orifice actuator, indicating lower pressure loss in the former. Additionally, the normal slot has a larger average exit Mach number (Ma), indicating a stronger flow control capability. It also achieves the peak Ma in a shorter time, indicating a faster momentum output response. Therefore, compared with the normal orifice actuator, the normal slot actuator has better potential for flow control.

Keywords

Main Subjects

Flow Control

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