THE CITY COLLEGE OF NEW YORK
CHEMICAL ENGINEERING DEPARTMENT
Professor Theodore Heindel
Iowa State University
Monday, March 12, 2018
Seminar will be held in MR-1307 (Marshak Building) at 2:00 PM
Reception will be held in Steinman Hall, Exhibit Room – 1st Floor
From 3:00 – 3:30 PM
Using X-rays to Visualize Multiphase Flows
Multiphase flows are commonly found in many industries (e.g., chemical and fuel processing, pharmaceutical manufacturing) as well as throughout the environment (e.g., waves, rain, avalanches). Although multiphase flows are commonly observed, their operation and control are very complex. Experimental observations of multiphase flows are crucial to improve our understanding of the fundamental hydrodynamic and transport processes, as well as to develop and validate fundamental models. This seminar will provide an overview of the multiphase flow research performed in the Experimental Multiphase Flow Laboratory at Iowa State University. A key feature of this research is the use of a unique X-ray flow visualization facility that can perform X-ray radiography, stereography, and computed tomography imaging. X-ray radiography is the act of producing a 2D projection of a 3D object based on the X-ray absorption characteristics of the object. X-ray stereography uses information from two radiographic projections to determine 3D information. X-ray computed tomography produces a time-average 3D density map of an object showing internal details. Several examples of each of these imaging methods will be discussed relative to various multiphase flows, including gas-liquid, gas-solid, and particle-particle flows.
Ted Heindel is the Bergles Professor of Thermal Science in the Department of Mechanical Engineering and an Associate Director of the Center for Multiphase Flow Research and Education (CoMFRE) at Iowa State University. He also holds a courtesy appointment in the Department of Chemical and Biological Engineering at ISU. He directs the Experimental Multiphase Flow Laboratory, which houses a one-of-a-kind instrument for performing X-ray visualization studies of complex fluid flows. His research currently focuses on multiphase flow hydrodynamics (e.g., mixing in gas-liquid, gas-solid, and particle-particle flows) and multiphase flow visualization and characterization using X-ray imaging technology. His research program has been supported through the NSF, USDA, DOE, DOD (ONR), and industrial partners. He has co-authored one book and published over 80 peer-reviewed journal papers and over 235 conference papers, abstracts, and technical reports. Ted has been recognized at ISU through the College of Engineering’s Superior Engineering Teacher of the Year Award, and was twice selected by graduating seniors as mechanical engineering’s Professor of the Year. He is a past associate editor for the ASME Journal of Fluids Engineering, and is the past chair of the Fluids Measurement and Instrumentation Technical Committee of ASME. He received his B.S. from the University of Wisconsin – Madison and his M.S. and Ph.D. from Purdue University, all in mechanical engineering with an emphasis in the thermal sciences.