Subtopic Deep Dive
Nanosecond Pulse Discharge Plasma Actuators
Research Guide
What is Nanosecond Pulse Discharge Plasma Actuators?
Nanosecond pulse discharge plasma actuators use high-voltage nanosecond pulses to generate shock waves and thermal effects for aerodynamic flow control in high-speed regimes.
These actuators employ dielectric barrier discharge (DBD) with ~100 ns full-width half-maximum pulses at ~15 kV to produce localized pressure waves that mitigate flow separation and shock waves (Little et al., 2012, 325 citations). Key studies demonstrate efficacy in subsonic separation control (Roupassov et al., 2008, 486 citations) and Mach 5 bow shock control (Nishihara et al., 2011, 159 citations). Over 10 papers since 2008 explore energy coupling and mechanical characteristics, with foundational works exceeding 300 citations each.
Why It Matters
Nanosecond pulse actuators enable active flow control on hypersonic vehicles by perturbing bow shocks, reducing drag and heat loads (Nishihara et al., 2011). They extend plasma actuation from low-speed AC DBD to supersonic flows via rapid thermalization and shock generation (Roupassov et al., 2008; Little et al., 2012). Applications include shock mitigation on airfoils and scramjet inlets, with kinetic models validating non-thermal and thermal effects (Adamovich et al., 2009).
Key Research Challenges
Energy Coupling Efficiency
Optimizing pulse energy transfer to hydrodynamic perturbations remains challenging due to variable plasma uniformity in high-speed flows (Takashima et al., 2012). Measurements show ~50% efficiency in volume discharges, but surface DBD requires precise pulse shaping (Dawson and Little, 2013). Kinetic modeling is needed for scaling to hypersonic conditions.
High-Speed Flow Diagnostics
Characterizing transient shock waves demands phase-locked schlieren imaging and fast diagnostics (Nishihara et al., 2011). Plasma actuator effects decay rapidly in Mach 5 flows, complicating velocity field measurements (Kotsonis, 2015). Multi-frequency excitations add complexity to instability control (Bénard and Moreau, 2010).
Thermal vs Non-Thermal Effects
Distinguishing rapid thermal shock formation from non-equilibrium plasma effects requires coupled experimental-modeling approaches (Adamovich et al., 2009). Nanosecond pulses produce both, but quantification varies with repetition rate and gas composition (Takashima et al., 2012).
Essential Papers
Electrical and mechanical characteristics of surface AC dielectric barrier discharge plasma actuators applied to airflow control
Nicolas Bénard, Éric Moreau · 2014 · Experiments in Fluids · 531 citations
International audience
Flow Separation Control by Plasma Actuator with Nanosecond Pulsed-Periodic Discharge
Dmitry Roupassov, A. A. Nikipelov, Maryia Nudnova et al. · 2008 · AIAA Journal · 486 citations
Separation Control with Nanosecond-Pulse-Driven Dielectric Barrier Discharge Plasma Actuators
Jesse C. Little, Keisuke Takashima, Munetake Nishihara et al. · 2012 · AIAA Journal · 325 citations
Abstract : The efficacy of dielectric barrier discharge (DBD) plasmas driven by high voltage (approximately 15 kV) repetitive nanosecond pulses approximately 100 ns FWHM) for flow separation contro...
Plasma assisted ignition and high-speed flow control: non-thermal and thermal effects
Igor Adamovich, Inchul Choi, Naibo Jiang et al. · 2009 · Plasma Sources Science and Technology · 289 citations
The paper reviews recent progress in two rapidly developing engineering applications of plasmas, plasma assisted combustion and plasma assisted high-speed flow control. Experimental and kinetic mod...
Synergistic Effect of H2O2 and NO2 in Cell Death Induced by Cold Atmospheric He Plasma
Pierre‐Marie Girard, Atousa Arbabian, Michel Fleury et al. · 2016 · Scientific Reports · 258 citations
Abstract Cold atmospheric pressure plasmas (CAPPs) have emerged over the last decade as a new promising therapy to fight cancer. CAPPs’ antitumor activity is primarily due to the delivery of reacti...
Diagnostics for characterisation of plasma actuators
Marios Kotsonis · 2015 · Measurement Science and Technology · 161 citations
The popularity of plasma actuators as flow control devices has sparked a flurry of diagnostic efforts towards their characterisation. This review article presents an overview of experimental invest...
Mach 5 bow shock control by a nanosecond pulse surface dielectric barrier discharge
Munetake Nishihara, Keisuke Takashima, J. William Rich et al. · 2011 · Physics of Fluids · 159 citations
Bow shock perturbations in a Mach 5 air flow, produced by low-temperature, nanosecond pulse, and surface dielectric barrier discharge (DBD), are detected by phase-locked schlieren imaging. A diffus...
Reading Guide
Foundational Papers
Start with Roupassov et al. (2008, 486 citations) for separation control basics, then Little et al. (2012, 325 citations) for airfoil experiments, and Nishihara et al. (2011, 159 citations) for Mach 5 shocks to build supersonic understanding.
Recent Advances
Study Dawson and Little (2013, 146 citations) for ns-DBD characterization and Takashima et al. (2012, 121 citations) for energy modeling advances.
Core Methods
Nanosecond DBD pulsing (~100 ns FWHM); phase-locked schlieren; kinetic modeling of energy deposition (Adamovich et al., 2009; Kotsonis, 2015).
How PapersFlow Helps You Research Nanosecond Pulse Discharge Plasma Actuators
Discover & Search
Research Agent uses citationGraph on Roupassov et al. (2008, 486 citations) to map 20+ connected papers on ns-DBD separation control, then exaSearch for 'nanosecond pulse DBD Mach shock control' to uncover Nishihara et al. (2011). findSimilarPapers expands to 50 related works on high-speed plasma actuation.
Analyze & Verify
Analysis Agent applies readPaperContent to extract pulse parameters from Little et al. (2012), then runPythonAnalysis on schlieren data for shock speed computation using NumPy/matplotlib. verifyResponse with CoVe cross-checks claims against Adamovich et al. (2009), earning GRADE A for thermal effect validation.
Synthesize & Write
Synthesis Agent detects gaps in hypersonic scaling via contradiction flagging between subsonic (Roupassov et al., 2008) and Mach 5 studies (Nishihara et al., 2011), then exportMermaid for energy coupling flowcharts. Writing Agent uses latexEditText, latexSyncCitations for 10 papers, and latexCompile to generate a review section with figures.
Use Cases
"Plot energy coupling efficiency from Takashima et al. (2012) ns-pulse data."
Research Agent → searchPapers 'Takashima energy coupling' → Analysis Agent → readPaperContent → runPythonAnalysis (pandas plot of pulse energy vs plasma power) → matplotlib efficiency curve output.
"Write LaTeX section on ns-DBD bow shock control citing Nishihara 2011."
Research Agent → citationGraph 'Nishihara Mach 5' → Synthesis Agent → gap detection → Writing Agent → latexEditText (draft) → latexSyncCitations (5 papers) → latexCompile → PDF section with schlieren figure.
"Find code for ns-pulse DBD simulations from recent papers."
Research Agent → searchPapers 'ns-DBD kinetic modeling' → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → Python kinetic solver repo for Adamovich-style simulations.
Automated Workflows
Deep Research workflow scans 50+ ns-DBD papers via searchPapers → citationGraph, producing structured report ranking by citations (Roupassov 2008 top). DeepScan applies 7-step CoVe to verify shock control claims in Nishihara et al. (2011) with GRADE scores. Theorizer generates hypotheses on multi-frequency ns-pulses from Bénard and Moreau (2010).
Frequently Asked Questions
What defines nanosecond pulse discharge plasma actuators?
High-voltage (~15 kV) repetitive ~100 ns pulses drive DBD to create shock waves for flow control (Little et al., 2012).
What are key methods in this subtopic?
Phase-locked schlieren imaging visualizes bow shock perturbations; kinetic modeling simulates energy coupling (Nishihara et al., 2011; Takashima et al., 2012).
What are the most cited papers?
Roupassov et al. (2008, 486 citations) on separation control; Bénard and Moreau (2014, 531 citations) on DBD characteristics.
What open problems exist?
Scaling efficiency to hypersonic flows; distinguishing thermal/non-thermal effects at high repetition rates (Adamovich et al., 2009).
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