Shedd, Tim

S.D. Schuetter, T. A. Shedd, K. A. Doxtator, G. F. Nellis and C. Van Peski, �A Correlation for Predicting Film Pulling Velocity in Immersion Lithography� European Mask Conference, January 22 � 26, 2006. Best Paper Award
A. G. Pautsch and T. A. Shedd, 2006, "Adiabatic and Diabatic Measurements of the Liquid Film Thickness During Spray Cooling with FC-72," International Journal of Heat and Mass Transfer, 49, 2610�2618.
S. Schuetter, T. Shedd, K. Doxtator, G. Nellis, R. Engelstad, C. Van Peski, A. Grenville, S.H. Lin, and D.C. Owe-Yang, 2006, �Measurements of the dynamic contact angle for conditions relevant to immersion lithography,� Journal of Microlithography, Microfabrication, and Microsystems, 5(2).
H. B. Burnett, A. C. Wei, M. S. El-Morsi, T. A. Shedd, G. F. Nellis, C. Van Peski and A. Grenville, 2006, �Modeling and experimental investigation of bubble entrapment for flow over topography during immersion lithography,� Journal of Microlithography, Microfabrication, and Microsystems, 5(1), paper 013008.
M. Switkes, M. Rothschild, T. A. Shedd, H. B. Burnett, M. S. Yeung, 2005, �Bubbles in immersion lithography,� Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 23(6), p 2409-2412.
H. B. Burnett, T. A. Shedd, G. F. Nellis, M. S. El-Morsi, R. Engelstad, S. Garoff, and K. Varanasi, 2005, �Control of the Receding Meniscus in Immersion Lithography,� Journal of Vacuum Science Technology B: Microelectronics and Nanometer Structures, 23(6), p. 2611-2616.
H. B. Burnett, T. A. Shedd, G. F. Nellis, C. Van Peski, 2005, �Static and Dynamic Contact Angles of Water on Photoresist,� Journal of Vacuum Science Technology B: Microelectronics and Nanometer Structures, 23(6), p. 2721-2727.
T. A. Shedd and B. W. Anderson, 2005, �Automated Wall Temperature Measurement Using Thermoreflectance,� Measurement Science and Technology, 16, pp. 2483-2488. Selected as a Highlights of 2005 Paper
T. A. Shedd, 2005. "A general model for estimating bubble dissolution and droplet evaporation times," Journal of Microlithography, Microfabrication, and Microsystems, 4(3), pp. 33004-1-8..
D. A. Arias and T. A. Shedd, 2005. "Steady And Dynamic Models Of Fuel And Air Flow In Carburetors For Small Engines," Journal of Fluids Engineering, 127(4), p 778-786.
A. G. Pautsch and T. A. Shedd, 2005. "Spray Impingement Cooling with Single- and Multiple-Nozzle Arrays. Part I: Heat Transfer Data," International Journal of Heat and Mass Transfer 48, pp. 3167-3175.
T. A. Shedd and A. G. Pautsch, 2005. "Spray Impingement Cooling with Single- and Multiple-Nozzle Arrays. Part II: Visualization and Empirical Models." International Journal of Heat and Mass Transfer, 48, pp. 3176-3184.
D. A. Arias and T. A. Shedd, 2004, �Numerical and Experimental Study of Fuel and Air Flow in Carburetors for Small Engines,� Journal of Engines, Paper No. 2004-32-0053. Best Paper Award, 2004 Small Engines Technology Conference
D. J. Rodriguez and T. A. Shedd, 2004. "Entrainment of gas in the liquid film of horizontal, annular two-phase flow," International Journal of Multiphase Flow, 30, pp. 565-583.
T. A. Shedd and T. A. Newell, 2004. "Characteristics of the liquid film and pressure drop in horizontal, annular two-phase flow through round, square and triangular tubes," Journal of Fluids Engineering, 126(5), pp. 807-817.
T. A. Shedd and T. A. Newell, 2003. "Visualization of two-phase flow through microgrooved tubes for understanding enhanced heat transfer," International Journal of Heat and Mass Transfer, 46(22), 4169-4177.
T. A. Shedd, T. A. Newell and P. K. Lee, 2003. "The effects of the number and angle of microgrooves on the liquid film in horizontal annular two-phase flow," International Journal of Heat and Mass Transfer, 46(22), 4179-4189.
T. A. Shedd and T. A. Newell, 1998. "Automated optical liquid film thickness measurement method," Review of Scientific Instruments, 69(12), 4205-4213.

Selected Awards, Honors and Societies

Pi Tau Sigma Professor of the Year, 2004-2005
SAE Ralph R. Teetor Engineering Educator Award, 2005
ASHRAE New Investigator Award, 2004
Polygon Mechanical Engineering Outstanding Instructor, 2002-2003
Pi Tau Sigma Professor of the Year, 2001-2002
NSF CAREER Award, 2002
Faculty Advisor of NSBE-WBESS, the Wisconsin Black Engineering Student Society
Member of Eta Kappa Nu and Tau Beta Pi honorary societies
Member of ASHRAE, ASME, and ASEE.

Summary

Though he has several areas of interest, Tim's current focus is on identifying the primary mechanisms responsible for two-phase heat and momentum transfer in thin films. While this may sound a little esoteric, these conditions exist in literally millions of appliances and commercial products world wide. A better understanding of the behavior of vapor-liquid systems can lead to improved efficiencies, less waste materials (refrigerants and heat exchangers), and greater affordability of products.

We are approaching this through the use of unique experimental flow loops and flow visualization techniques. Long, clear test sections are used to study a range of fluids and flow conditions. New optical measurement techniques, such as Thin Film PIV, are being developed to quantify flow behavior. Results from these measurements will be fed into efforts to develop accurate, flexible and computationally efficient models for use both by university researchers and system designers in industry.

Direct applications of this work are spray cooling of high heat flux electronics, boiling and condensation in smooth and enhanced tubes, and the development of cleaner, more efficient small engines through a better understanding of carburetor behavior.

Copyright 2007 The Board of Regents of the University of Wisconsin System
Date last modified: 10-Jul-2007
Content by: shedd@engr.wisc.edu
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