Two-dimensional numerical modeling of interaction of micro-shock wave generated by nanosecond plasma actuators and transonic flow

• Autores: M. Abdollahzadeh, J. C. Páscoa, P. J. Oliveira
• Localización: Journal of computational and applied mathematics, ISSN 0377-0427, Vol. 270, Nº 1, 2014, págs. 401-416
• Idioma: inglés
• DOI: 10.1016/j.cam.2013.12.030
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• Resumen

  • The influence of nanosecond pulse-driven, surface-mounted dielectric barrier discharge (DBD) actuators on a transonic flow is studied numerically. An airfoil representing turbomachinery blades in transonic flow is considered as a test case. A two-dimensional fluid model of DBD is used to describe the plasma dynamics. The model couples fluid discharge equations with compressible Navier�Stokes equations. Simulations were conducted with an airfoil of NACA 3506 profile in a transonic condition of M = 0.75. When a nanosecond pulse voltage is used, with a rise and a decay time of the order of nanoseconds, a significant amount of energy is transferred in a short time from the plasma to the fluid, which leads to the formation of micro-shock waves and therefore to the modification of flow features.

    Moreover, a plasma energy deposition model is developed and presented by using the results of the plasma discharge model.