Experimental Study of a DBD-Plasma Driven Channel Flow

Debiasi, Marco; Li, Jiun-Ming

doi:10.2514/6.2011-954

Cited by 13 publications

(9 citation statements)

References 36 publications

(35 reference statements)

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“…However, these simulations do allow for a visualization of the effects occurring inside of the plasma channel, which were not of obtainable using PIV and only very coarse data are available in the literature. 7 The computed velocity fields confirm the coalescing wall jets hypothesis presented in Sec. II.…”

Section: -4supporting

confidence: 83%

Measurements and simulations of a channel flow powered by plasma actuators

Riherd

Roy

2012

Journal of Applied Physics

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Experimental measurements and numerical simulations of a dielectric barrier discharge driven flow inside a finite length channel have been performed. Plasma actuators have been used to impart momentum to the flow in the near wall region, which diffuses throughout the height of the channel as it convects downstream. This momentum addition is found to be of sufficient magnitude to create an unsteady channel flow with exit velocities on the order of 1–3 m/s. Pressure and velocity measurements have been taken in order to quantify the effects of varying the number of symmetrically placed pairs of plasma actuators in the channel and the operating voltage applied to the actuators, showing a monotonic increase with respect to both parameters. Power law relationships have been determined for these measurements with respect to the operating voltage, with exponents of 2.0 for the exit velocity and of 5.6 for the maximum pressure differential. The pressure measurements also suggest that the pressure increase due to each actuator is independent of the bulk flow inside the channel. Numerical predictions also agree with the measured pressure and velocity distributions across the channel. The bulk velocity and pressure measurements allow for efficiency calculations of the plasma channel, which are shown to also fit into a power law relationship with respect to the operating voltage. The data collected show that the efficiency of these devices is low, less than 0.1%, but that it increases with a power law exponent of 4.09 to 4.35 indicating the possibility of using such channel for pumping small flows.

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Section: -4supporting

confidence: 83%

Measurements and simulations of a channel flow powered by plasma actuators

Riherd

Roy

2012

Journal of Applied Physics

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“…A comparison between experimental measurements is reported by Debiasi and Jiun‐Ming at the threshold voltage of 12 KV, 25,000 Hz for the voltage frequency, and using Kapton as the dielectric in conditions and the specific plasma configuration used in experiment. The present numerical simulation is shown in Fig.…”

Section: Modified Lumped Circuit Element Validationmentioning

confidence: 99%

Numerical Investigation on the Impact of DBD Plasma Actuators on Temperature Enhancement in the Channel Flow

Aberoumand

Jafarimoghaddam

Aberoumand

2016

Heat Trans. Asian Res.

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The present study indicates the impact of different arrangements of dielectric barrier discharge (DBD) plasma actuators on temperature field in a channel flow. The modified lumped circuit element electro-static model was used to calculate induced Lorentz body force and plasma dissipation of the actuators. Different distributions of temperature in the modeled channel flow for each arrangement of actuators (one, two, and three attached actuators) are discussed. According to the numerical simulation, DBD plasma actuators are beneficial devices for increasing temperature in the channel flow, especially near the location of the actuators that can be considered for related applications. The actuators are modeled under an incompressible flow regime with a low Reynolds number of 335, and the configurations of the actuators are set to be 3 KV for the peak voltage amplitude, 10,000 Hz for the voltage frequency, and Kapton as the dielectric. C⃝ 2016 Wiley Periodicals, Inc. Heat Trans Asian Res, 0(00): 1-14, 2016; Published online in Wiley Online Library (wileyonlinelibrary.com/journal/htj).

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“…Results will be presented in section 4. We compare of downstream velocity profiles with experimental data by Debiasi et al [21] in section 4.1. The resultant body forces and induced velocities near the vicinities of the plasma actuators are presented in section 4.2.…”

Section: Introductionmentioning

confidence: 96%