Article
Physics, Fluids & Plasmas
Sasa S. Ivkovic, Nikola Cvetanovic, Bratislav M. Obradovic
Summary: A systematic study was conducted on the influence of gas flow rate on helium dielectric barrier discharge. The study focused on the relationship between gas flow rate and impurity level, as well as the consequent changes in discharge operation. The results showed a non-linear decrease in impurity concentration with increasing gas flow rate. Changes in electrical properties, such as breakdown voltage and current density, were observed with the gas flow. The study also revealed a change in excitation mechanism with variation in gas flow. The decrease in impurities was found to be the main mechanism behind the changes in discharge behavior.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Mechanics
Xinhui Dong, Hao Hong, Xiaolong Deng, Wei Zhong, Gang Hu
Summary: In this study, deep reinforcement learning (DRL) is applied to determine the suction flow rate on a circular cylinder model in a wind tunnel, aiming to minimize aerodynamic forces while considering energy dissipation efficiency. A surrogate model is employed to optimize the reward function and hyperparameters, significantly reducing the experimental training cost of DRL.
Article
Optics
Fatima Nadia Haddou, Philippe Guillot, Ahmed Belasri, Thomas Maho, Bruno Caillier
Summary: This study explores the existence of striations in a low pressure krypton plasma and distinguishes between mobile and immobile striations using experimental analysis with AC current. The manifestations of striations are observed and recorded with a high-speed camera, providing insights into the inhomogeneous aspect of discharge in krypton lamps. Spectroscopic and electrical measurements are also considered to study the behavior, energy deposit characteristics, and luminous efficiency of the discharge.
Article
Engineering, Multidisciplinary
Guo Yao, Dong Liu
Summary: This study investigates the aeroelastic stability of a pyrotechnic separation plate in axial subsonic airflow. The dynamic model of the plate is established based on the linear potential flow theory and the von Karman plate theory. The results show that the plate loses stability rapidly when subjected to an explosion, but can restore stability under negative pressure. The study also observes a displacement jumping phenomenon and highlights the potential damage to the structure due to the rapid increase in plate amplitude.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Engineering, Electrical & Electronic
Tim Augustin, Marley Becerra, Hans-Peter Nee
Summary: This study proposes a novel type of Enhanced Active Resonant (EAR) DC Circuit Breakers (DCCBs) that use a discharge closing switch as interruption medium. The study introduces a new commutation process that allows decoupling of the minimum voltage from the current level by adjusting the triggering delay, greatly improving the reliability of the circuit breaker's operation.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Environmental
Yinyin Zhang, Han Zhang, Ai Zhang, Paul Heroux, Zhuyu Sun, Yanan Liu
Summary: Dielectric barrier discharge (DBD)-biochar sequential batch experimental technology was used to degrade atrazine (ATZ) in soil. DBD treatment increased the hydrophilicity, particle size, and instability of soil particles, leading to the exposure of residual ATZ. Biochar introduction compensated for the shortcomings of sole DBD treatment and enhanced ATZ removal efficiency. Proposed ATZ degradation mechanisms included various reactions, such as dealkylation, dechloro-hydroxylation, and alkylic-oxidation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Agronomy
Tao Zhang, Yaoming Li, Lizhang Xu, Yanbin Liu, Kuizhou Ji, Sheng Jiang
Summary: Rice is one of the most important food crops in China, but its cleaning performance is affected by high moisture content during harvesting. In this study, the method of hot airflow cleaning and the influence of temperature and vibration frequency on dispersion characteristics in an air-and-screen cleaning device were investigated. The results provide guidance for the cleaning of wet rice threshed mixtures in combine harvesters.
Article
Engineering, Multidisciplinary
Dechun Zhang, Peng Li, Yizhang Zhu, Yiren Yang
Summary: This paper presents a mathematical modeling and theoretical instability analysis of an inverted cantilevered plate under the influence of cracks and subsonic axial flow. The numerical analysis reveals that the critical flow speed decreases significantly with an increase in the crack flexible coefficient. The change in critical dynamic pressure and instability modes of the cracked plates has been theoretically analyzed and expressed in terms of the crack parameters. This modeling and analysis strategy has potential applications in other engineering problems involving plate-like systems with inverted configurations and discontinuities.
APPLIED MATHEMATICAL MODELLING
(2022)
Article
Engineering, Aerospace
Jianyang Yu, Yuhang Lu, Yabo Wang, Fu Chen, Yanping Song
Summary: This paper experimentally studies the effects of dielectric barrier discharge (DBD) plasma actuators (PAs) on the leakage flow structures and loss in a turbine cascade. The results show that the DBD plasma actuators can weaken the strength of the tip leakage flow near the casing, and this effect is influenced by the actuation strength and attack angle.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Guo Yao, Zhiwei Cao, Lisha Zhu
Summary: This article investigates the application of the lattice sandwich structure in aviation engineering, and analyzes its subsonic aerodynamic stability and nonlinear forced vibration properties. By establishing the coupled equation of motion and analyzing the dynamic response of the system, suggestions for the optimal design of the lattice sandwich plate are proposed.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Engineering, Civil
Dong Liu, Guo Yao
Summary: The study of the stability and vibration characteristics of devices entering the finite airflow field is important in engineering practice. This study establishes the governing equation of a plate entering the finite airflow field and investigates the variations of natural frequencies and displacement time response to study the stability and vibration properties of the system. Different system parameters have significant impacts on the stability and vibration characteristics.
THIN-WALLED STRUCTURES
(2022)
Article
Automation & Control Systems
Liqing Li, Yunhang Wang, Yitao Chen
Summary: Traditional liquid electric discharge machining emits a large amount of carbon, while electric discharge machining in gas, or dry EDM, offers possibilities for sustainable development. This study focuses on the servo control of dry EDM to improve discharge stability and machining efficiency. By comparing different control strategies, significant improvements were obtained in terms of discharge ratio and machining efficiency. The study also analyzed the servo characteristics under different gas media and proposed an optimization scheme. Experimental results confirmed the effectiveness of the servo strategy and the matching characteristics of different media and servos in EDM.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Physics, Applied
Xiao Wang, Hui-Jie Yan, Yu-Ying Wang, Si-qi Yu, Ting Li, Jian Song
Summary: The surface charges in nanosecond pulsed dielectric barrier discharge under quiescent air and airflow were detected based on the Pockels effect of electro-optical crystals. In quiescent air, the surface charge spot propagates and moves in a certain direction due to the combination of the transverse electric field and thermal accumulation. The position of the surface charge spot remains fixed throughout a single discharge cycle (0.83 ms), and noticeable decay of surface charges occurs over time. When airflow is introduced, the propagation and movement of surface charges are accelerated, leading to changes in discharge mode and charge distribution.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Liang Yang, Yunkai Cai, Lin Lu
Summary: The experimental study on desulfurization and denitrification using a DBD reactor combined with a wet scrubbing tower showed high desulfurization efficiency (97-100%) and variable denitrification efficiency (12-96%) under different operating conditions. The key problem lies in denitration, with factors such as DBD power, simulated flue gas flow rate, NaOH solution concentration, spray density, packing type, and packing height influencing denitrification efficiency.
APPLIED SCIENCES-BASEL
(2021)
Article
Polymer Science
Choncharoen Sawangrat, Parichat Thipchai, Kannikar Kaewapai, Kittisak Jantanasakulwong, Jonghwan Suhr, Pitiwat Wattanachai, Pornchai Rachtanapun
Summary: The effect of argon and oxygen gases, as well as treatment times, on the properties of modified bamboo fibers using DBD plasma were investigated. Plasma treatment with inert gases generated ions and radicals on the fiber surface. Different spectroscopy and microscopy techniques confirmed changes in chemical composition, crystallinity, and surface roughness. Mechanical properties of the fiber-reinforced epoxy composites showed different trends with different plasma treatments and treatment times.
Article
Physics, Applied
Giovanni Busco, Azadeh Valinataj Omran, Loick Ridou, Jean-Michel Pouvesle, Eric Robert, Catherine Grillon
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Chemistry, Multidisciplinary
Augusto Stancampiano, Tommaso Gallingani, Matteo Gherardi, Zdenko Machala, Paul Maguire, Vittorio Colombo, Jean-Michel Pouvesle, Eric Robert
APPLIED SCIENCES-BASEL
(2019)
Editorial Material
Physics, Fluids & Plasmas
Xinpei Lu, Jean-Michel Pouvesle
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2019)
Article
Oncology
Thai-Hoa Chung, Augusto Stancampiano, Kyriakos Sklias, Kristaq Gazeli, Franck M. Andre, Sebastien Dozias, Claire Douat, Jean-Michel Pouvesle, Joao Santos Sousa, Eric Robert, Lluis M. Mir
Article
Chemistry, Multidisciplinary
Thomas Maho, Raphaelle Binois, Fabienne Brule-Morabito, Maryvonne Demasure, Claire Douat, Sebastien Dozias, Pablo Escot Bocanegra, Isabelle Goard, Laurent Hocqueloux, Claire Le Helloco, Inna Orel, Jean-Michel Pouvesle, Thierry Prazuck, Augusto Stancampiano, Clement Tocaben, Eric Robert
Summary: The study assesses the use of non-thermal multi plasma jets for treating infected and chronic wounds in hospital centers, successfully demonstrating bacterial inactivation for various strains. This work contributes to the development of new therapies for nosocomial infections and chronic wounds.
APPLIED SCIENCES-BASEL
(2021)
Article
Physics, Fluids & Plasmas
Augusto Stancampiano, Pablo Escot Bocanegra, Sebastien Dozias, Jean-Michel Pouvesle, Eric Robert
Summary: This study investigates the liquid flows induced by plasma treating biologically-relevant liquid in standard tissue culture grade multi well plates, revealing that evaporation governs the thermal effect and vortexes induce a non-uniform distribution of plasma generated reactive species.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Pharmacology & Pharmacy
V. Vijayarangan, A. Delalande, S. Dozias, J-M Pouvesle, E. Robert, C. Pichon
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2020)
Article
Physics, Fluids & Plasmas
Azadeh Valinataj Omran, Giovanni Busco, Loick Ridou, Sebastien Dozias, Catherine Grillon, Jean-Michel Pouvesle, Eric Robert
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2020)
Article
Radiology, Nuclear Medicine & Medical Imaging
A. Stancampiano, T-H Chung, S. Dozias, J-M Pouvesle, L. M. Mir, E. Robert
IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES
(2020)
Article
Physics, Fluids & Plasmas
Amanda M. Lietz, Xavier Damany, Eric Robert, Jean-Michel Pouvesle, Mark J. Kushner
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2019)
Article
Radiology, Nuclear Medicine & Medical Imaging
Giovanni Busco, Fabienne Fasani, Sebastien Dozias, Loick Ridou, Claire Douat, Jean-Michel Pouvesle, Eric Robert, Catherine Grillon
IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES
(2018)
Article
Radiology, Nuclear Medicine & Medical Imaging
Vinodini Vijayarangan, Anthony Delalande, Sebastien Dozias, Jean-Michel Pouvesle, Chantal Pichon, Eric Robert
IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES
(2018)
Article
Medicine, Research & Experimental
Hans-Robert Metelmann, Christian Seebauer, Vandana Miller, Alexander Fridman, Georg Bauer, David B. Graves, Jean-Michel Pouvesle, Rico Rutkowski, Matthias Schuster, Sander Bekeschus, Kristian Wende, Kai Masur, Sybille Hasse, Torsten Gerling, Masaru Hori, Hiromasa Tanaka, Eun Ha Choi, Klaus-Dieter Weltmann, Philine Henriette Metelmann, Daniel D. Von Hoff, Thomas von Woedtke
CLINICAL PLASMA MEDICINE
(2018)
Proceedings Paper
Thermodynamics
Ibrahim Chiboub, Hugo Ajrouche, Ob Nilaphai, Sebastien Dozias, Bruno Moreau, Camille Hespel, Fabrice Foucher, Christine Mounaim-Rousselle, Jean-Michel Pouvesle, Eric Robert
28TH CONFERENCE ON LIQUID ATOMIZATION AND SPRAY SYSTEMS, ILASS-EUROPE 2017
(2017)
Article
Physics, Fluids & Plasmas
T. Darny, J-M Pouvesle, J. Fontane, L. Joly, S. Dozias, E. Robert
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2017)
