Abstracta cylindrical dielectric barrier discharge dbd plasma reactor is analyzed and investigated. Atmospheric pressure dielectric barrier discharge chemical and. Dielectric barrier discharges have been studied extensively, but not used successfully for analytical applications. Multirod dbd reactor is introduced for no removal based on both dielectric barrier. The term plasma actuator has now been a part of the fluid dynamics flowcontrol vernacular for more than a decade. Afm, dielectric barrier discharge, igc, surface roughness, viscosity, water retention value. Dielectric barrier discharges silent discharges are used on a large industrial scale. A prominent feature is the simple scalability from small laboratory reactors to large industrial installations with megawatt input powers. Multirod dbd reactor is introduced for no removal based on both dielectric barrier discharges and sliding discharges.
Modeling of dielectric barrier discharge and resulting. This study investigates the fundamental topochemical effects of dielectricbarrier discharge treatment on bleached chemical pulp and unbleached mechanical pulp fiber surfaces. Eckart ruehl, free university of berlin, berlin, for working collaboration and several. They combine the advantages of nonequilibrium plasma properties with the ease of atmosphericpressure operation. Dielectric barrier discharges dbds have been used as soft ionization sources dbdi for organic mass spectrometry dbdims for approximately ten years. In order to understand the impacts of dielectric barrier on the discharge characteristics of a nanosecond pulsed surface dielectric barrier discharge nsdbd, the effects of dielectric constant and dielectric barrier thickness are numerically investigated by using a threeequation driftdiffusion model with a 4species 4reaction air chemistry. Modeling of dielectric barrier discharge and resulting fluid dynamics balaji jayaraman 1, siddharth thakur 2 and wei shyy 3 dept. Recent work 112 on the efficient generation of ionized fluid in a glow discharge at atmospheric pressure using a dielectric barrier discharge dbd technique has attracted interest from the fluid dynamics and control communities. Successively accelerated ionic wind with integrated. Simulation tool for dielectric barrier discharge plasma. Surface dielectric barrier discharge plasma actuators. Advanced oxidation processes using nonthermal plasmas have been developed to decompose persistent organic pollutants.
Role of surface vs gas phase dynamics a interaction between filaments b diffuse discharges v. This study presents particle image velocimetry piv measurements of the induced flow characteristics generated by single dielectric barrier discharge dbd actuators in quiescent conditions. Typical operational conditions of barrier discharges electric field strength e of first breakdown. The largely isothermal surface plasma generation realized above can modify the nearwall flow structure by means of lorentzian collisions between the ionized fluid and the neutral fluid. An efficient tool to measure the sustainability of nonthermal plasmas through the electrical breakdown of gases s. Dec 12, 2017 a structurally simple dielectric barrier discharge based mercury free plasma uvlight source has been developed for efficient water disinfection. Dielectric barrier discharges dbds, also referred to as barrier discharges or silent discharges have for a long time been exclusively related to ozone generation. Dielectric barrier discharges dbds are plasmas generated in configurations with. The largely athermal surface plasma generation investigated in the above studies. In the reverse half of the cycle, electrons are supplied by surface discharges on the dielectric and move toward the metal electrode.
Acetic acid decomposition in a coaxial dielectric barrier. Abstract this study investigates the fundamental topochemical effects of dielectric barrier discharge treatment on bleached chemical pulp and unbleached mechanical pulp fiber surfaces. Dielectric barrier discharge dbd plasmas and their. A structurally simple dielectric barrier discharge based mercury free plasma uvlight source has been developed for efficient water disinfection. Their defining feature is the presence of dielectric layers that make it impossible for charges generated in the gas to reach the conducting electrode surfaces. The objective of this study was to investigate the effects of inpackage, nonthermal high voltage dielectric barrier discharge hvdbd treatment on microbial quality, safety, and color of fresh chicken breast meat pectoralis major. Atmosphericpressure dielectric barrier discharge publication. Glow discharge at atmospheric pressure using a dielectric barrier discharge can induce fluid flow and operate as an actuator for flow control 16. Dielectricbarrier discharges silent discharges are used on a large industrial scale. Nishiyama2 1formly graduate school of engineering, tohoku university, japan 2institute of fluid science, tohoku university, japan abstractnonthermal plasma technologies with water vapor have been developed for a wide range of applications. A gapless microdielectricbarrierdischarge ion source for. For a single dielectric barrier discharge, during onehalf of the ac cycle, electrons leave the metal electrode and move towards the dielectric where they accumulate locally. Microbiological safety and quality of fresh chicken meat are important concerns to industry.
Modeling of dielectric barrier discharge and resulting fluid. Dielectric barrier discharge based mercuryfree plasma uv. Due to these unique advantages, the plasma technology has been widely used in the catalytic fields. Atomization of bismuthane in a planar dielectric barrier discharge dbd atomizer was investigated using a variety of probes, including atomic absorption spectrometry aas to monitor distribution of free atoms along the optical path and direct analysis in real time dart coupled to an orbitrap mass spectrometer to identify the structure of the species arising from the hydride.
The plasma increases the temperature of free electrons. Flat surfaces natalia yu babaeva and mark j kushner1 university of michigan, department of electrical engineering and computer science 1 beal ave, ann arbor, mi 48109, usa email. In this simple model the problem is reduced to 1d by assuming the dielectric gap is much smaller than the diameter of the plates. The discharge system is working in open air at atmospheric pressure. Dielectric barrier discharge dbd, which is characterized by at least one insulating dielectric between two electrodes connected to. Oct 31, 2019 in order to understand the impacts of dielectric barrier on the discharge characteristics of a nanosecond pulsed surface dielectric barrier discharge nsdbd, the effects of dielectric constant and dielectric barrier thickness are numerically investigated by using a threeequation driftdiffusion model with a 4species 4reaction air chemistry. Pooja gulati1, udit narayan pal1, mahesh kumar1, ram prakash1, vishnu srivastava1 and vimal vyas2.
Water treatment by dielectric barrier discharge tube with. Boneless skinless chicken breast meat was collected. Numerical investigation on the effects of dielectric barrier. Numerical investigation on the effects of dielectric. In this study, doublelayered solid dielectric barriers and planeplane electrode system are used to examine the dc discharge characteristics of air under atmospheric pressure. Dielectric barrier discharge dielectric barrier dischargebarrier discharge high configurations voltage ac generator high voltage electrode dielectric barrier dielectric barrier high voltage electrode discharge discharge ground electrode ground electrode h. The results shown that dbd plasma treatment significantly induced the inactivation of sti in soymilk and kunitztype trypsin inhibitor from soybean skti in a model system. Paper open access a dielectric barrier discharge dbd.
They combine the aduantages of nonequilibrium plasma properties with the ease. An overview of corona discharge, arc discharge, dielectric barrier discharge dbd, surface discharge sd, atmospheric pressure glow discharge apgd and atmospheric pressure plasmas jet has been. Successively accelerated ionic wind with integrated dielectric barrier discharge plasma actuator for lowvoltage operation. View dielectric barrier discharge research papers on academia. Limiting the migration of bisphenol a from polycarbonate. The development of dielectric barrier discharges in gas. A compact power supply for dielectric barrier discharge. Our paper deals about the removal of nox emissions from the diesel exhaust by electric discharge plasma. Pdf dielectricbarrier discharges silent discharges are used on a large. The wellknown single dbd plasma actuator is composed of two plate electrodes asymmetrically mounted. Introduction dielectric barrier discharges dbds are selfsustaining electrical discharges in electrode con. Their history, discharge physics, and industrial applications article pdf available in plasma chemistry and plasma processing 231. Atomization of bismuthane in a planar dielectric barrier discharge dbd atomizer was investigated using a variety of probes, including atomic absorption spectrometry aas to monitor distribution of free atoms along the optical path and direct analysis in real time dart coupled to an orbitrap mass spectrometer to identify the structure of the species arising from the hydride generator as.
The primary aim is to establish accurate empirical trends for model development on both the maximum induced velocity and body force with voltage and. The versatile atmospheric dielectric barrier discharge experiment vader was designed to examine the variables that affect co 2 dissociation within a dbd. Heliumbased dbdi is often used because of its good ionization efficiency, low ignition voltage, and homogeneous plasma conditions. Dielectricbarrier discharges dbds comprise a specific class of highvoltage, ac, gaseous discharges that typically operate in the nearatmospheric pressure range. Atomization of bismuthane in a dielectric barrier discharge. Dielectric barrier discharge plasma actuator for flow control. Many hazardous organic molecules are readily attacked by free radicals, electrons or uv. Dielectric barrier discharge, polycarbonate, bisphenole a, surface treatment. Dielectric barrier discharge how is dielectric barrier. Plasma generation by dielectric barrier discharge dbd devices has recently become a topic of interest for researchers due to the growing number of industrial applications. Dielectricbarrier discharges dbds, also referred to as barrier discharges or silent discharges have for a long time been exclusively related to ozone generation. Dielectric barrier discharge indiumtin oxide dc magnetron xray photoelectron spectroscopy aluminumdoped zinc oxide azo is a material that can have high electrical conductivity while being highly transparent at the same time.
Nonthermal plasmas can be used for water treatment system because they allow free radical generation without heating. Detailed investigations into the properties of this nonequilibrium discharge which can be conveniently operated at about atmospheric pressure led to a. Dielectric barrier discharge plasma actuator for flow control final report nasacr2012217655 september 2012. A gapless microdielectricbarrierdischarge ion source. Analysis of the topochemical effects of dielectricbarrier.
Introduction traditional approaches for active flow separation control using dielectric barrier discharge dbd. Pdf characteristics of dielectric barrier discharge. Argon needs much higher ignition voltages than helium when the same discharge. In this work we have used dielectric barrier discharge dbd a plasma. Diagnostic of plasma discharge parameters in helium filled. A compact power supply for dielectric barrier discharge devices. Modeling dielectric barrier discharges in more than one dimension is possible, but the results can be difficult to interpret because of the amount of competing physics in the problem. Formation and characteristics of patterns in atmospheric. Dielectric barrier discharge dbd, sometimes referred to as a barrier discharge or a silent. As the applied voltage between the two electrodes exceeds the onset voltage the free. Experimental study of currentvoltage characteristics and. A particular type of plasma actuator that has gained wide use is based on a singledielectric barrier discharge sdbd mechanism that has desirable features for use in air at atmospheric pressures.
Modeling of dielectric barrier discharge plasma actuator. Atmosphericpressure discharge is the focus of interest in lowtemperature plasma technologies for its lowcost, chamber free, and easy manipulation. Dielectric barrier discharges make use of a high frequency field applied through a protective and currentlimiting dielectric barrier to develop a plasma discharge in the gap between dielectrics. Inactivation of soybean trypsin inhibitor by dielectric. Ion energy and angular distributions onto polymer surfaces. Dielectricbarrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Barik department of chemistry, ravenshaw university, cuttack753003, odisha email. Water treatment by dielectric barrier discharge tube with vapor flow t. Dielectric barrier discharge plasma is one of the most popular methods to generate nanthermal plasma, which is made up of a host of highenergy electrons, free radicals, chemically active ions and excited species, so it has the property of being prone to chemical reactions. Diagnostic of plasma discharge parameters in helium filled dielectric barrier discharge. Surface dielectric barrier discharge dbd plasma actuators are widely investigated for their ability to manipulate air. Limiting the migration of bisphenol a from polycarbonate using dielectric barrier discharge emad a. Radio frequency rf dielectric barrier discharge dbd actuators have been studied for their potential use to control. In this study, a water treatment method that involves spraying a solution into a coaxial dielectric barrier discharge dbd tube using an air, argon or oxygen.
Dielectric barrier discharge dbd, which is characterized by at least one insulating dielectric between two electrodes connected to an alternating. This electron cascading action is called the townsend. Abstractdielectric barrier discharge dbd is the electrical discharge between the electrodes in the presence of an insulating barrier. The plasma reactor is custommade with i an electrode diameter of 9. Their main advantages are their very short response time and their low power consumption. Jul 19, 2016 first test of dielectric barrier discharge. Simulation tool for dielectric barrier discharge plasma actuators at atmospheric and subatmospheric pressures sbir phase i final report alexandre likhanskii techx corporation boulder, colorado 80303 1. Wood specimens were exposed to oxygen plasma at various intensities ranging from 5. Experimental study of dielectricbarrierdischarge reactor for plasma. Dielectric barrier discharge plasma, 10kv, 10khz solid state unipolar pulses developed by growcontrols, email. The objective of this study was to investigate the impacts and underling mechanisms of dielectric barrier discharge dbd plasma on sti activities. Dielectric barrier discharge dbd plasmas and their applications. Successively accelerated ionic wind with integrated dielectricbarrierdischarge plasma actuator for lowvoltage operation. For these actuators, the mechanism of flow control is through a generated body.
For the treatment of diesel exhaust a new type of reactor referred to as crossflow dielectric barrier discharge reactor has been used, where the gas flow is perpendicular to the corona electrode. Crosstalk in multiple dielectric barrier discharge actuators. Dielectric barrier discharge dbd is the electrical discharge between two electrodes separated by an insulating dielectric barrier. Inpackage antimicrobial treatment of chicken breast meat. It has been used in many applications such as displays, mobile devices and solar cells. Pdf fundamentals and applications of dielectricbarrier discharges. Dec 06, 2014 dielectric barrier discharge plasma, 10kv, 10khz solid state unipolar pulses developed by growcontrols, email.
Electrostatic analysis of dc discharge phenomena in air. Dielectric barrier discharge plasma actuators for flow. Fibers were treated with various levels of dielectricbarrier discharge treatment ranging from 0 to 9. More free electrons are created in cascading ionization figure 2. Electric field in an ac dielectric barrier discharge. For these actuators, the mechanism of flow control is through a. Single dielectric barrier discharge plasma enhanced. The objective of this study was to investigate the impacts and underling mechanisms of dielectricbarrier discharge dbd plasma on sti activities. Surface dielectric barrier discharge dbd plasma actu ators are widely. Soft argonpropane dielectric barrier discharge ionization. Dielectric barrier discharge um students repository.
This paper reports the plasma discharge analysis of a dielectric barrier discharge dbd source. Their history, discharge physics, and industrial applications ulrich kogelschatz1 receiued april 5, 2002. Surface free energy was calculated based on contact. Dielectric barrier discharge, ozone generation, and their. Dielectric barrier discharge research papers academia. Abstract this study reports experimental investigations of currentvoltage characteristics and optical emission from argon, helium, nitrogen, and air plasma generated by 17khz dielectric barrier discharge at atmospheric pressure. In this study, a water treatment method that involves spraying a solution into a coaxial dielectric barrier discharge. Surface dielectric barrier discharge plasma actuators ercoftac.