• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Non-thermal and thermal plasma formation of radio-frequency dielectric barrier discharfe under high-pressure conditions

Research Project

Project/Area Number 16K14170
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Thermal engineering
Research InstitutionThe University of Tokyo

Principal Investigator

Tsue Mitsuhiro  東京大学, 大学院工学系研究科(工学部), 教授 (50227360)

Co-Investigator(Renkei-kenkyūsha) NAKAYA SHINJI  東京大学, 大学院工学系研究科, 准教授 (00382234)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords非平衡プラズマ / 点火 / 燃焼 / 希薄混合気 / プラズマ反応 / 化学反応 / 熱プラズマ / 高周波バリア放電 / 分光 / バリア放電 / 反応モデリング
Outline of Final Research Achievements

The ignition mechanism of non-thermal plasma formed by a radio-frequency dielectric barrier discharge was investigated for methane/air mixtures under high-pressure conditions. The minimum ignition energy was measured, and the plasma emissions were analyzed by spectrometers, considering the effects of the pressure and the frequency on the plasma formation. The results indicated that there was the minimal value of the minimum ignition energy against ambient pressure and the discharge frequency. An increase in the discharge frequency resulted in an enhancement of the active flame kernel formations although there might be active heat loss over a certain threshold of the frequency. At 500kPa, transitions from non-thermal to thermal plasmas were clearly observed in spectrograms measured with a high-speed imaging spectrometer. The effects of the frequency on the ignition performance was also validated by a chemical reaction analysis considering plasma and chemical reactions.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (1 results)

All 2017

All Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Effects of Discharge Frequency on Ignition Behaviors of DBD for Lean Methane/Air Mixtures2017

    • Author(s)
      Shinji Nakaya, Taichi Kobayashi, Shingo Iseki, Mitsuhiro Tsue, Masaaki Kono, Kanehito Nakamura
    • Organizer
      11th Asia-Pacific Conference on Combustion
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi