LHD 国际学术报告会
报告题目：
Theoretical and Experimental Attributes for a Time Domain View to Heat Flux
报告人：Prof. J. I. Frankel, University of Tennessee, Knoxville
报告时间：2010年8月10日（周二）9:00
报告地点：力学所小礼堂内会议室
Abstract: This seminar begins by reviewing recent advances promoting a transient viewpoint to heat flux in a variety of aerospace heat transfer applications. This view combines Fourier’s law and conservation of energy to produce an integral relationship that explicitly reveals the commonly observed ill-posed nature of heat flux based on temperature data. From this view, several stabilizing strategies can be constructed to produce highly accurate and stable predictions. This view allows for a series of novel observations to be generated that can be exploited for: (a) estimating transient, surface temperature and heat flux from in-depth sensors; (b) estimating transducer time constants and contact resistance; (c) estimating the location for the onset of transition in high Mach number flows (hypersonic flow studies); and, (d) estimating thermophysical properties of isotropic and anisotropic materials by in-situ means. A brief discussion of theory, computational methods, rate-based sensing with experimental results, sensitivity analysis, and inverse analysis are highlighted. Integrating concepts from calibration, inverse and sensitivity analyzes leads to new and highly reliable means for designing experimental studies for extracting heat flux (and temperature); thermophysical properties; contact resistance; and other important parameters required in precision measurements. Finally, new research directions will be described.
About the speaker：Dr. Frankel received his Ph.D. from Virginia Polytechnic Institute and State University in 1986. He is a full professor (since 1996) in the Mechanical, Aerospace and Biomedical Engineering Department at the University of Tennessee in Knoxville, TN. He is an Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA); an active member of the AIAA Technical Committee for Thermophysics (2000-2006, 2009-2012); and, a Fellow at the Wessex Institute of Technology in the United Kingdom. He will be serving as the Technical Chair for Thermophysics for the January 2012 AIAA Aerospace Sciences Meeting to be held in Nashville, TN (USA). He is a Guest Professor (2009-2012) at the Ocean University of China (Qingdao). Professor Frankel has approximately 100 publications and his research has appeared in more than 25 different journals in engineering, mathematics and physics. His main areas of research involve conductive and radiative transport, sensor considerations, applied and computational mathematics, and inverse problems (from theory to experiments). He is a reviewer to more than 32 different international journals involving engineering, physics and mathematics. He has given more than 40 invited talks (international and national). Professor Frankel holds one US patent (2009) with Professors Keyhani, Arimilli and Wu from the University of Tennessee. This sensor produces heating rates (K/s) from temperature transducers.