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航空学院青年学术论坛第127讲(两场报告)
2018-11-13 10:28   审核人:

报告一

报告题目:Plasma Modeling for CFD: Perspectives and Retrospectives

报 告人:韩国釜山国立大学Bernard Parent副教授

邀 请人:流体力学系 陈真利 副教授

讲座时间:2018年11月16日(星期五)上午9:00~10:00

讲座地点:西北工业大学友谊校区航空楼A310会议室

报告摘要:

The interaction between non-thermal plasmas and turbulent flows (as occurs in plasma flow control, plasma-assisted combustion, or plasma-based fuel reforming) has been so far a major challenge to simulate numerically due to the large variation in physical time scales involved: while electrons travel at velocities as high as millions of meters per second within the sheaths, neutrals and ions travel at velocities 4-6 orders of magnitude lower. This large discrepancy between the time scales has made it difficult to incorporate detailed plasma models within CFD codes for fluid flow. We discuss recent advances in computational plasmadynamics that overcome this hurdle and make addition of a detailed plasma model to a CFD code relatively trouble-free.

报告人简介:

Dr. Parent obtained his bachelor's degree in Mechanical Engineering at McGill University in 1996, and his PhD at the University of Toronto Institute for Aerospace Studies in 2002. During his PhD, he developed a CFD code to simulate chemically-reacting turbulent flows in scramjets. From 2003 to 2007 he did postdoctoral stays in several locations including Princeton University and the Tokyo Institute of Technology where his research focused on extending his CFD code to handle non-thermal plasma effects. Since 2008, he has been a faculty member at Pusan National University where he has been active in developing numerical methods and plasma models to improve the simulation of plasma flow control and plasma-assisted combustion.

报告二

报告题目:纳秒脉冲等离子体计算:特性诊断与数值模拟

报 告 人:空军工程大学朱益飞 博士

邀 请 人:流体力学系 陈真利 副教授

讲座时间:2018年11月16日(星期五)上午10:00~11:00

讲座地点:西北工业大学友谊校区航空楼A310会议室

报告摘要:

纳秒脉冲放电具有独特的热效应和化学效应,其中纳秒脉冲表面介质阻挡放电(nSDBD)在流动控制和点火助燃领域得到了大量的研究。针对放电的输运特性和反应动力学特性,开发了PASSKEy和NANA代码,揭示了nSDBD输运动力学过程和纳秒脉冲毛细管放电的反应动力学特性,并首次实现诊断实验-数值模拟的完整比对。在此基础上,结合空工大航空等离子体动力学实验室的具体研究,进行介绍与讨论。

报告人简介:

朱益飞,博士毕业于法国巴黎综合理工大学等离子体物理学专业,硕士毕业于空军工程大学空天等离子体动力学专业,等离子体计算工坊成员,现就职于空军工程大学航空等离子体动力学重点实验室。

研究方向为纳秒脉冲放电等离子体物理及其反应动力学在流动控制、点火助燃等方面的应用,主要结合航空背景从事低温等离子体数值模拟与特性诊断工作。在巴黎综合理工大等离子体物理学实验室攻读博士期间,自主开发了PASSKEy并行等离子体流注动力学求解器、NANA化学反应动力学求解器,针对大气压下表面介质阻挡放电、毛细管放电、针板放电的输运动力学行为与化学反应动力学特性,进行了系统的数值模拟和实验研究。

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