Prof. Ali Yilmaz -The University of Texas at Austin

You are invited to attend a lecture by:

Prof. Ali Yilmaz

The University of Texas at Austin

Petascale Integral Equation Methods for Quantifying the Performance of Antennas Near Humans

Abstract

The proliferation of wireless communication systems, the appetite for increased functionality of wireless devices, and the lack of conclusive studies on long-term effects of non-ionizing radio-frequency radiation have led to persistent public concern about the possible adverse health effects of radio-frequency power emitting devices in close proximity to humans. While simulation-based bioelectromagnetic (BIOEM) studies have generated an abundance of results inaccessible by experiments in the last three decades, these studies have frequently spawned diverse opinions instead of providing consensus; e.g., on whether the smaller heads of children absorb more radiation and/or allow deeper penetration. Such controversies highlight the pressing need for reproducible, reliable, high-resolution, and high-accuracy BIOEM simulations—a formidable task because of the complexity of the human body and nearby antennas. This talk will describe our recent progress on developing an integral-equation based simulator that capitalizes on petascale computers to perform unprecedented simulations of antennas near humans. The presentation will describe recently developed FFT acceleration, parallelization, and preconditioning techniques as well as our ongoing validation, verification, and benchmarking efforts. It will also demonstrate simulations of various antennas near the high-fidelity AustinMan and AustinWoman models (AustinMan and AustinWoman are publically available anatomical human models:

http://web2.corral.tacc.utexas.edu/AustinManEMVoxels/).

Bio

Ali Yılmaz received the Ph.D. degree in electrical and computer engineering from the University of Illinois at Urbana-Champaign in 2005. He was a Research Assistant from 1999 to 2005 and a Postdoctoral Research Associate from 2005 to 2006 at the Center for Computational Electromagnetics at the University of Illinois. In 2006, he joined the faculty of the Department of Electrical and Computer Engineering at the University of Texas at Austin, where he is currently an Associate Professor. He has authored/co-authored over 100 papers in refereed journals and international conferences. His current research interests include computational electromagnetics, with emphasis on fast frequency- and time-domain integral equation solvers, parallel algorithms, antenna and scattering analysis, microwave circuits, electromagnetic interference/compatibility, bioelectromagnetics, and geoelectromagnetics.

Thursday, November 5, 2015, at 15:00

Room 011, Kitot building