Basics in Beamed MW Energy Deposition for Flow/Flight Control

Kolesnichenko, Yuri; Azarova, O. A.; Brovkin, Vadim; Khmara, Dmitri; Lashkov, V. A.; Ryvkin, Mark

doi:10.2514/6.2004-669

Cited by 32 publications

(13 citation statements)

References 6 publications

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“…Indeed various researchers have demonstrated experimentally that the energy deposition inside a supersonic aerodynamic flow can lead to important gain in terms of wave drag reduction. [9][10][11] Experiments with microwave discharges in Refs. 12-14 and numerical simulations in Refs.…”

Section: Introductionmentioning

confidence: 99%

Three dimensional simulations of pattern formation during high-pressure, freely localized microwave breakdown in air

2014

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Section: Introductionmentioning

confidence: 99%

Three dimensional simulations of pattern formation during high-pressure, freely localized microwave breakdown in air

2014

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“…2 from Kolesnichenko et al [7]. The centerline pressure on a blunt cylinder at Mach 2.1 is shown as a function of time during the interaction of the microwave-generated plasma with the blunt body shock associated with the cylinder.…”

Section: A N Bmentioning

confidence: 99%

Interaction of Microwave-Generated Plasma with a Hemisphere Cylinder at Mach 2.1

Knight

Kolesnichenko²,

Brovkin³

et al. 2009

AIAA Journal

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Microwave energy deposition is a novel method for flow control in high-speed flows. Experiments have demonstrated its capability for beneficial flowfield modification in supersonic flow including, for example, drag reduction for blunt bodies. A fully three-dimensional, time-accurate gas dynamic code has been developed for simulating microwave energy deposition in air and the interaction of the microwave-generated plasma with the supersonic flow past a blunt body. The thermochemistry model includes 23 species and 238 reactions. The code is applied to the simulation of microwave energy deposition in supersonic flow past a hemisphere cylinder. The computed centerline surface pressure is compared with the experiment. The interaction of the microwave-generated plasma with the flowfield structure is examined. Nomenclature c p i = specific heat at constant pressure for species i D = diameter of cylinder E, E o = electric field, maximum electric field H = total enthalpy per unit mass of mixture h o f i = heat of formation of species i at temperature T ref h i = static enthalpy of species i per unit mass of species i h = static enthalpy per unit mass of mixture K k = reaction coefficient for reaction k k = Boltzmann constant, 1:38 10 23 J=K k E = microwave wave number, 2= M = representative mass for ions and neutrals M i = molecular weight of species i, kg=kg mol M i = species i (e.g., M 1 e) M 1 = Mach number m = number of reactions m e = mass of electron N = total concentration of species excluding electrons, cm 3 N e , N crit e = electron concentration, critical electron concentration, cm 3 N i = concentration of species i, cm 3 n = number of species including electrons p = static pressure _ p i k = rate of production of species i from reaction k Fig. 1 Interaction of microwave-generated plasma with cylinder. Fig. 2 Centerline pressure vs time. _ q = rate of heating of gas per unit volume R = universal gas constant, 8314 J=kg mol K T = static (translational) temperature of mixture T e = electron temperature u i = mass-averaged velocity component in i direction V dr = drift velocity x i = Cartesian coordinate Y i = mass fraction of species i, Y i i = i = fraction of h i converted into heating of gas h i = rate of change in enthalpy due to reaction i = 2m e =M " = total energy per unit mass of mixture = wavelength of microwave = rotational relaxation factor, dimensionless e = effective frequency of electron collisions 0 ik , 00 ik

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“…The findings of Knight et al, 143 as shown in Figure 55, validated against experimental results show that this type of model can accurately model the impact of microwave energy deposition on high speed flows. The same model is used in a study by Knight et al 123 in an effort to replicate the experimental results of Kolesnichenko et al 122 The minimum achieved surface pressure of the numerical model showed excellent comparison to the experimental data, however the duration of this feature was debated.…”

Section: Numerical Modelling Of Microwave Dischargesmentioning

confidence: 99%

“…121 However it did not gain much interest until the late 1970's/early 1980's with the appearance of this new area of research, namely, plasma aerodynamics. 122 Although it is not the most straightforward method of generating plasma, compared to surface plasmas for instance, it is of interest as it allows the possibility of generating plasma from a distance rather than the location of the hardware being restricted to the desired energy deposition location.…”

Section: E Microwave Generated Plasmasmentioning

confidence: 99%