报告题目： Combustion Experiments under Microgravity Conditions

报 告 人： Prof. Yu-Cheng Liu

报告人单位： Center for Combustion Energy,Tsinghua University

报告时间：Nov. 9 (Thursday ) 3:00pm-5:00pm

报告地点：B-518, Lee Shau Kee Building of Science and Technology

邀 请 人：任祝寅

Abstract

Microgravity experiments can be performed in ground-based and space-based facilities. The main purpose of the experiments is to remove much the gravity-induced phenomena such that secondary physics of the problem become experimentally tangible. In some research areas, removal of gravity has become an attractive and extensively used method to obtain valuable experimental data for developing further models of underlying physics. Combustion falls into this category when certain parameters and resulting characteristics prohibit meaningful interpretations in normal gravity conditions. This presentation will start from a generic outset of microgravity experiments and reveal the necessities of such a particular experimental setup for combustion studies. Some canonical combustion experiments performed onboard the International Space Station and ground-based facilities and recent advances in the area will be reviewed. Fundamental sciences for real combustion devices and fire safety regulations for long duration space mission that can only be accessed through microgravity experiments will be discussed.

Bio:

Dr. Yu-Cheng Liu received his bachelor and master degrees in chemical engineering from National Taiwan University and master and doctoral degree in mechanical engineering from Cornell University. During his study at Cornell, he participated in the flame extinguishment (FLEX) experiment onboard the International Space Station. After one year postdoctoral experience at Cornell, he worked at University of Michigan-Flint as an assistant professor from 2014 to 2016. He was appointed as an assistant professor in the Center for Combustion Energy and Department of Thermal Engineering at Tsinghua University since 2016. He is a recipient of the Young Thousand Talents of China in 2017. His research interests include microgravity experiments, experimental and numerical droplet combustion, characterization of multi-component fuel vaporization, cool flames, liquid surrogate fuel for combustion applications, and optical diagnostics of combustion phenomena.