Select a calendar:
Filter December Events by Event Type:
SUNMONTUEWEDTHUFRISAT
Events for December 08, 2011
-
AME Department Seminar
Thu, Dec 08, 2011 @ 11:00 AM - 12:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Beverley J. McKeon , Professor of Aeronautics. Graduate Aerospace Laboratories. California Institute of Technology. Pasadena, CA.
Talk Title: Deconstructing (and Reconstructing) Wall Turbulence
Abstract: The literature contains several distinct approaches to understanding the flow physics underlying wall turbulence, including the characterization of velocity statistics and spectra, identification of dominant coherent structures and analysis of the amplification properties of the Navier-Stokes equations, to name a few. However the detailed connections between these views of the same fluid system have proved elusive. The critical layer framework for turbulent pipe flow proposed by McKeon & Sharma (J. Fluid Mech, 2010) provides a simple model by which to understand both qualitative and quantitative aspects of the structure of wall turbulence. This framework utilizes an input-output formulation of the Navier-Stokes equations to analyze the transfer function and identify the dominant forcing and response mode shapes at each combination of frequency, streamwise and spanwise wavenumbers relevant to experimental observations. In this talk I will describe and expand the framework, demonstrating that our model gives important predictive information about both the statistical and structural make-up of wall turbulence, and can be used to understand some simple experiments designed to manipulate the spectral distribution of turbulent energy. Implications for both the classical picture of wall turbulence and control of turbulent flows will be discussed.
Biography: Beverley McKeon is a Professor of Aeronautics in the Graduate Aerospace Laboratories at Caltech (GALCIT). Her research interests include interdisciplinary approaches to manipulation of boundary layer flows using morphing surfaces and fundamental investigations of wall turbulence at high Reynolds number. She was the recipient of a Presidential Early Career award (PECASE) in 2009 and an NSF CAREER award in 2008. Prior to joining GALCIT, she was a Royal Society Dorothy Hodgkin Research Fellow and postdoc in the Department of Aeronautics at Imperial College London, after receiving a B.A. and M.Eng. from the University of Cambridge (1996) and Ph.D. in Mechanical and Aerospace Engineering from Princeton University (2003) under the guidance of Lex Smits.
More Info: http://ae-www.usc.edu/seminars/index.shtml#upcomingLocation: Ronald Tutor Hall of Engineering (RTH) - 526
Audiences: Everyone Is Invited
Contact: April Mundy
Event Link: http://ae-www.usc.edu/seminars/index.shtml#upcoming
-
Lyman L. Handy Colloquium Series
Thu, Dec 08, 2011 @ 12:45 PM - 01:45 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Speaker: Paul Nealy, Chemical and Biological Engineering, University of Wisconsin - Madison
Talk Title: Directed Assembly of Block Copolymers to Advance the Performance of Conventional Lithography
Series: Lyman L. Handy Colloquium Series
Abstract: Our research program aims to integrate self-assembling block copolymers into current manufacturing practice. The fundamental concepts of the approach are that 1) the most advanced production-oriented exposure tools (e.g. 193 nm, EUV, or electron beam lithography) and resist materials are used to create patterns of differing chemical functionality on the substrate, and 2) films of block copolymers can be directed to assemble in the presence of the chemical pattern into predictable and desirable morphologies, thereby augmenting and enhancing the lithographic process. In comparing the pattern in resist to the pattern of domains induced to assemble in the block copolymer film, directed assembly has been demonstrated to achieve high degrees of pattern perfection, placement of features at the precision of the lithographic tool used to make the chemical pattern, improved dimensional control of features, improved line edge and line width roughness, and resolution enhancement by factors of two to four. In addition, the approach has been demonstrated to robustly achieve non-regular device-oriented geometries used in the fabrication of integrated circuits also with resolution enhancement by multiplication of feature density by interpolation on low duty cycle chemical patterns. After describing current capabilities, remaining technological questions and pathways towards implementation in specific applications will be discussed.
Host: Malancha Gupta
Location: James H. Zumberge Hall Of Science (ZHS) - 159
Audiences: Everyone Is Invited
Contact: Petra Pearce
-
USC in Your Neighborhood: Behind the Scenes of Avatar
Thu, Dec 08, 2011 @ 06:00 PM - 08:00 PM
Viterbi School of Engineering Alumni
Receptions & Special Events
Thursday, December 8, 2011 (6:00-8:00 p.m.)
San Jose City Hall Rotunda
200 East Santa Clara Street
San Jose, CA 95113
For more information visit, http://alumni.usc.edu/neighborhoodsjLocation: San Jose City Hall Rotunda
Audiences: Everyone Is Invited
Contact: Kathleen Concialdi
