科创中国

Non-stationary phenomena during thecombustion in narrow channels and porous media

姓名: Dr. Roman Fursenko

单位: Russian Academy of Sciences

时间：6月7日(周三) 10:00 am

地点: 34-125

腾讯会议: 314-296-384

邀请人: 李君 副教授

Biography 个人简介

Dr. Roman Fursenko received a MSc degree in Mathematics from Novosibirsk StateUniversity, Russia in 2001, a PhD and then Doctoral degrees in Physics from Institute olTheoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences(ITAM SB RAS), Russia in 2004 and 2016, correspondingly. From 2001 to 2018 hconsequently worked as junior researcher, researcher, senior researcher and leading researchelin ITAM. Since 2018 he has been the head of the laboratory of Physical and MathematicaModelling of Combustion Processes in ITAM.He also worked as postdoctoral researcher irNational Cheng Kung University (2006-2007) and in National Taiwan University (2007-2008From 2013 to 2018 served as leading researcher of International Combustion & EnergyLaboratory in Far-Eastern Federal University, Russia. Dr. Fursenko's current research interestsare combustion instability, combustion in systems with heat recirculation including porousmedia combustion. He has published more than 60 international journal papers in areas otcombustion and fluid mechanics (ScopusID:7801607104.ORCID: 0000-0002-1152-8981)

Abstract 报告摘要

Numerical and experimental results on non-stationary combustion phenomena observed innarrow channels and porous media are discussed. Combustion in narrow externally heated tube.multi-channel system and model one-layer porous media are considered. The patterns of nonstationary flame behavior typical for these systems are distinguished and generalized. Analogybetween filtrational gas combustion and combustion in narrow channel is discussed. The prosand cons of one-layer model porous burner for studies of filtrational gas combustion on thepore level are introduced. Results of the experimental and numerical studies of non-stationarylame front behavior at pore scale are presented and compared at a qualitative level

Pore-scale numerical simulation of flame dynamicsin porous media combustion

姓名: Dr. Igor Yakovlev

单后: Russian Academy of Sciences

时间：6月7日(周三) 10:30 am

地点：34-125

腾讯会议：314-296-384

邀请人：李君 副教授

Biography 个人简介

Dr. Igor Yakovlev studied at Tomsk State University in 2006 to the Engineering Faculty with a60-year history and one of Russia's most impactful scientific schools in mechanics andmathematics. During his time as a master's student, Igor also worked as a mechanical engineerfor an innovative technology company that developed advanced swirl burners for the petroleumindustry. He then became a post-graduate student at Tomsk State University and joined a groufocusing on heat recirculation reactors and numerical simulation for conjugate heat transfelproblems. Upon receiving his Ph.D., Igor researched local combustion phenomena in porousmedia combustion using pore-scale simulation methodology. In 2020, Igor became the head ofa theoretical and numerical combustion group in the Laboratory of Applied Combustion atTomsk Scientific Center, He takes pride in contributing to porous media combustion physicsand developing novel, effective, eco-friendly burners for industrial and domestic applications.

Abstract 报告摘要

Porous media combustion is considered as a prospective alternative to free flames in energyconversion devices because ofincreased burning rate, extended flammability limits. andenhanced flame stability following from thermal interaction between flame and solid matrixVolume-averaged models capture global combustion characteristics. However, localphenomena play an essential role in physical fundamentals that are not fully clear now. Thispresentation is devoted to a novel pore-scale approach based on the idea of fluid flowsimulation with chemical reaction and conjugate heat transfer with radiation, explicitlyconsidering the actual irregular structure of pore channels. The main methodological aspects ofthis approach will be discussed, as well as its application to the numerical study of flamestabilization in three-dimensional metallic foam and packed bed of particles. Some results ofunstable oscillatory flamebehavior in a two-dimensional packed bed will also be reported.