Multi-source corona discharge is a commonly used method to generate more charged particles,but the interaction mechanism between multiple discharge sources,which largely determines the overall discharge effect,has sti...Multi-source corona discharge is a commonly used method to generate more charged particles,but the interaction mechanism between multiple discharge sources,which largely determines the overall discharge effect,has still not been studied much.In this work,a large-space hybrid model based on a hydrodynamic model and ion-transport model is adopted to study the interaction mechanism between discharge sources.Specifically,the effects of the number of electrodes,voltage level,and electrode spacing on the discharge characteristics are studied by taking a double-blade electrode as an example.The calculation results show that,when multiple discharge electrodes operate simultaneously,the superimposed electric field includes multiple components from the electrodes,making the ion distribution and current different from that under a single-blade electrode.The larger the distance between discharge electrodes,the weaker the interaction.When the electrode spacing d is larger than 4 cm,the interaction can be ignored.The results can guide the design of large discharge gap array electrodes to achieve efficient discharge.展开更多
设计并实现了一种基于近场通信(near field communication,NFC)技术的热带农产品可追溯系统。该系统融合智能移动终端NFC技术和移动通信技术,结合MySQL数据库,使用Google Android和Windows跨平台开发。分析了系统架构和功能模块具体设计...设计并实现了一种基于近场通信(near field communication,NFC)技术的热带农产品可追溯系统。该系统融合智能移动终端NFC技术和移动通信技术,结合MySQL数据库,使用Google Android和Windows跨平台开发。分析了系统架构和功能模块具体设计,阐述了系统基于新型NFC技术的实现方法,通过试验测试验证了系统的可行性。展开更多
基金supported by National Natural Science Foundation of China(Nos.52207158 and 51821005)the Fundamental Research Funds for the Central Universities(HUST:No.2022JYCXJJ012)。
文摘Multi-source corona discharge is a commonly used method to generate more charged particles,but the interaction mechanism between multiple discharge sources,which largely determines the overall discharge effect,has still not been studied much.In this work,a large-space hybrid model based on a hydrodynamic model and ion-transport model is adopted to study the interaction mechanism between discharge sources.Specifically,the effects of the number of electrodes,voltage level,and electrode spacing on the discharge characteristics are studied by taking a double-blade electrode as an example.The calculation results show that,when multiple discharge electrodes operate simultaneously,the superimposed electric field includes multiple components from the electrodes,making the ion distribution and current different from that under a single-blade electrode.The larger the distance between discharge electrodes,the weaker the interaction.When the electrode spacing d is larger than 4 cm,the interaction can be ignored.The results can guide the design of large discharge gap array electrodes to achieve efficient discharge.
文摘设计并实现了一种基于近场通信(near field communication,NFC)技术的热带农产品可追溯系统。该系统融合智能移动终端NFC技术和移动通信技术,结合MySQL数据库,使用Google Android和Windows跨平台开发。分析了系统架构和功能模块具体设计,阐述了系统基于新型NFC技术的实现方法,通过试验测试验证了系统的可行性。
