介质阻挡放电中重燃时间的预测
Prediction of Re-Ignition Times in Dielectric Barrier Discharges
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中文总结 AI 辅助
本文提出一种基于等效电路的降阶模型，用于预测介质阻挡放电中同一位置连续放电间的重燃时间，并通过模拟和实验验证，其预测不确定性可定量反映放电模式的空间有序性。
中文摘要 AI 辅助
介质阻挡放电（DBD）中的放电点火事件自组织成具有不同程度有序性的时空模式。DBD的复杂动力学及所出现模式的精细结构，使得制定预测性的机理描述变得困难。我们提出了一种降阶模型的公式化描述，该模型描述了DBD装置内同一位置连续放电之间的重燃动力学。该模型由等效电路推导而来，并针对流体-泊松模拟以及在空气类气体混合物中、大气压下、由正弦高压波形驱动的多丝装置进行的实验进行了验证。实验场景包括一个高度有序的状态，其中放电以规则的时间和空间间隔点火，生成在多个周期内稳定的模式；以及一个不稳定状态，其中放电出现在看似随机的位置和时间。模型精度在这两种状态下均进行了评估，发现相关的预测不确定性为放电模式的空间有序性提供了定量度量。
英文摘要
Discharge ignition events in dielectric barrier discharges (DBDs) self-organise into spatio-temporal patterns with varying degrees of order. The complex dynamics of a DBD and intricate structure of occurring patterns complicate the formulation of predictive, mechanistic descriptions. We present the formulation of a reduced-order model that describes the re-ignition dynamics between consecutive discharges appearing at the same position inside a DBD arrangement. The model is derived from an equivalent electric circuit and validated against fluid-Poisson simulations and experiments performed with a multi-filament arrangement in air-like gas mixtures at atmospheric pressure driven by sinusoidal high-voltage waveforms. The experimental scenarios include a highly ordered regime where discharges ignite at regular time and space intervals generating a pattern stable over several periods, and an unstable regime with discharges appearing at seemingly random positions and times. The model accuracy is assessed in both regimes and it is found that the associated prediction uncertainty provides a quantitative measure of the spatial order of the discharge pattern.
发表机构
- Leibniz Institute for Plasma Science and Technology (INP)（莱布尼兹等离子体科学与技术研究所）
- Department of Plasma Physics and Technology, Masaryk University（马萨里克大学等离子体物理与技术系）
- Institute of Physics, University of Greifswald（格赖夫斯瓦尔德大学物理研究所）
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