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MHD-RLC discharge model and the efficiency characteristics of plasma synthetic jet actuator

Zhang, Z., Wu, Y., Jia, M. , Song, H., Sun, Z. ORCID: 0000-0002-3862-7939 & Li, Y. (2017). MHD-RLC discharge model and the efficiency characteristics of plasma synthetic jet actuator. Sensors and Actuators A: Physical, 261, pp. 75-84. doi: 10.1016/j.sna.2017.03.039


Major factors affecting efficiency of plasma synthetic jet actuator (PSJA) are analyzed based on a new discharge model in the present paper. The model couples the magnetohydrodynamics (MHD) equations with the resistor–inductor–capacitor (RLC) equations, and is able to resolve the time-dependent voltage fall on the sheath region and arc region, which is critical in analyzing energy loss in the heating process. This model is integrated into the commercial CFD software by a two-equation method. Results show that in a typical capacitive discharge at microsecond scale, the maximum energy loss is the sheath energy loss, which accounts for nearly half of the discharge energy, while the radiation loss is less than 5%. The discharge time is an important parameter for the PSJA efficiency. A short discharge time less than 1 μs will effectively reduce the sheath energy loss, while a longer discharge time will decrease the thermodynamic efficiency.

Publication Type: Article
Additional Information: © Elsevier 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Publisher Keywords: Plasma synthetic jet actuator, Energy efficiency, MHD, Gas discharge model
Subjects: T Technology > TJ Mechanical engineering and machinery
Departments: School of Science & Technology > Engineering > Mechanical Engineering & Aeronautics
Text - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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