Curriculum Vitae PROF. ROBERT D. MOSER Department of Theoretical

Total Page：16

File Type：pdf, Size：1020Kb

Curriculum Vitae PROF. ROBERT D. MOSER Department of Theoretical and Applied Mechanics Telephone : (217)-244-7728 University of Illinois at Urbana-Champaign E-mail: [email protected] 104 S. Wright St. Urbana, IL 61801 EDUCATION Ph.D. in Mechanical Engineering, 1984. Stanford University. Dissertation topic: \Direct numerical simulation of curved turbulent channel flow," Adviser: Parviz Moin M.S. in Mechanical Engineering, 1981. Stanford University. B.S. in Mechanical Engineering, 1978. Mass. Institute of Technology. PROFESSIONAL POSITIONS 6/95-Pres. : Professor of Theoretical and Applied Mechanics, University of Illinois, Urbana, IL. 1/02-6/02 : Visiting Professor, Universidad Politechnica de Madrid, Madrid SPAIN. 8/99-8/00 : Interim Head, Department of Theoretical and Applied Mechanics, University of Illinois, Ur- bana, IL. 4/87-6/95 : Research Scientist, NASA Ames Research Center, Moffett Field CA. 4/85-4/87 : Reservoir Engineer, Sohio Petroleum Co., Dallas, TX. 6/84-4/85 : Research Scientist, NASA Ames Research Center, Moffett Field CA. 6/78-6/80 : Analytical Engineer, Hamilton Standard, Windsor Locks CT. RECENT RESEARCH ACTIVITIES Research interests include: 1) Fundamental studies of turbulence using direct numerical simulations. Recent studies have included: investigation of the non-uniqueness and self-similar scaling of turbulent free shear flows, studies of compressibility effects in wall-bounded turbulent flows, investigation of high-Reynolds number scaling of wall-bounded turbulence. 2) Development of large eddy simulation (LES) formulations. 3) Development of high resolution numerical methods for use in computational mechanics. 4) Development of high fidelity numerical models of complex multi-scale multi-physics systems. Specific applications include solid propellant rockets, and the cardiovascular system. Also direct the fluid dynamics group of the Center for Simulation of Advanced Rockets, a DOE ASCI ASAP center. Recent research has been supported by AFOSR, DOE, NASA and NSF. MAJOR AWARDS 1995 NASA Medal for Exceptional Scientific Achievement Fellow of American Physical Society Co-Recipient (with R. Adrian) of an Arnold O. Beckman Research Award (1999)..

Copy Link

Recommended publications

Arxiv:Math/0209377V2 [Math.NA] 27 Sep 2002 Nsuyn Hserror
Tommy Kunhung Kim September 2001 Applied Mathematics A Modified Smagorinsky Subgrid Scale Model for the Large Eddy Simulation of Turbulent Flow Abstract In the field of Large Eddy Simulation, the Smagorinsky subgrid scale model (in some form) is the most commonly accepted and used subgrid scale model. The purpose of this paper is to address the main weakness of the Smagorinsky model, its poor perfor- mance near the wall. The goal is to establish a model that corrects the Smagorinsky model near the walls while at the same time minimizing the computational over- head. A version the Dynamic Subgrid Scale model is also incorporated into the finite element code to facilitate comparisons with the new model near the walls. One of the unique characteristics of Large Eddy Simulations as compared to other methods of dealing with turbulent flows is the idea of filtering. In this paper we define arXiv:math/0209377v2 [math.NA] 27 Sep 2002 what a filter is and also address an issue related to filters; the error that results when the filtering and differential operations are interchanged. This error is studied under the context of the Finite Element Method which allows us to focus on the function being filtered rather than the filter kernal function, which has been the usual approach in studying this error. A Modified Smagorinsky Subgrid Scale Model for the Large Eddy Simulation of Turbulent Flow BY Tommy Kunhung Kim B.A. (California State University, Fullerton) 1990 M.A. (California State University, Fullerton) 1992 DISSERTATION Submitted in partial satisfaction of the requirements for the degree of DOCTOR OF PHILOSOPHY in Applied Mathematics in the OFFICE OF GRADUATE STUDIES of the UNIVERISTY OF CALIFORNIA arXiv:math/0209377v2 [math.NA] 27 Sep 2002 DAVIS Approved: Committee in Charge 2001 i Abstract In the field of Large Eddy Simulation, the Smagorinsky subgrid scale model (in some form) is the most commonly accepted and used subgrid scale model.
[Show full text]
Thermal & Fluid Sciences Industrial Affiliates and Sponsor Conference
Thermal & Fluid Sciences Industrial Affiliates and Sponsor Conference February 1-3, 2017 DAY 1 SESSION I – PSAAP PROGRAM OVERVIEW: Prof. Gianluca Iaccarino Title: Modeling of particle-laden wall turbulence Authors: Mahdi Esmaily, Hoora Abdehkakha Abstract: The study of particle-laden wall turbulence is of prime importance because of its relevance to numerous engineering and scientific applications. We are particularly interested in this problem because of its relevance to characterization and simulation of particle-based solar receivers. The concept behind this new generation of solar receivers is to collect radiative energy volumetrically through dispersed particles rather than the conventional approach of absorption via a surface. In the design under investigation at our center, we explore this concept by seeding nickel particles in a turbulent flow of air in a square duct and exposing the mixture to radiative heat flux. In this setting, particles are heated through radiation, warming the surrounding air that is used for power generation. To make this design practical, the temperature in the near wall region must be maintained below a certain limit. However, due to a phenomenon called turbophoresis, particles interacting with turbulence migrate toward the solid boundaries and produce very high temperatures at the wall by absorbing a significant amount of radiation in a small region. This high local temperature depends primarily on the particle concentration in the viscous sublayer, which its correct prediction relies on proper modeling of turbophoresis. Hence, in this study, we investigate the effect of various parameters on turbophoresis through direct numerical simulations of turbulent flow laden with Lagrangian point-particles. We consider a flow of air in a square duct at a bulk Reynolds number of 5,000 to 20,000 dispersed with 4- to 16-micron nickel particles.
[Show full text]
Lecture Notes in Computational Science and Engineering 56
Lecture Notes in Computational Science and Engineering 56 Editors Timothy J. Barth Michael Griebel David E. Keyes Risto M. Nieminen Dirk Roose Tamar Schlick Stavros C. Kassinos Carlos A. Langer Gianluca Iaccarino Parviz Moin (Eds.) Complex Effects in Large Eddy Simulations With 233 Figures, 51 Colour Plates and 17 Tables ABC Editors Stavros C. Kassinos Gianluca Iaccarino Carlos A. Langer Parviz Moin Department of Mechanical Department of Mechanical Engineering and Manufacturing Engineering Stanford University University of Cyprus Escondido Mall 488 Kallipoleos Street 75 94305-3035 Stanford, USA 1678 Nicosia, Cyprus E-mail: [email protected] E-mail: [email protected] [email protected] [email protected] Library of Congress Control Number: 2006933936 Mathematics Subject Classification (2000): 76F65, 80A32, 76F55, 65C20, 76F50, 76M28, 65M15, 65M50 ISBN-10 3-540-34233-8 Springer Berlin Heidelberg New York ISBN-13 978-3-540-34233-5 Springer Berlin Heidelberg New York This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable for prosecution under the German Copyright Law. Springer is a part of Springer Science+Business Media springer.com c Springer-Verlag Berlin Heidelberg 2007 The use of general descriptive names, registered names, trademarks, etc.
[Show full text]
D. J. Bodony 1
D. J. Bodony DANIEL J. BODONY Department of Aerospace Engineering Telephone: 217-244-3844 University of Illinois at Urbana-Champaign, MC-236 http://acoustics.ae.illinois.edu Urbana, IL 61801 E-mail: [email protected] EDUCATION Ph.D., Aeronautics & Astronautics, 2004, Stanford University, Stanford, California. Thesis: Aeroacoustic Prediction of Turbulent Free-Shear Flows M.S., Aeronautics & Astronautics, 1999, Purdue University, West Lafayette, Indiana. Thesis: Turbulence Model Computations of an Axial Vortex. B.S., Aeronautics & Astronautics, 1997, Purdue University, West Lafayette, Indiana. PROFESSIONAL EXPERIENCE Professor August 2020 – Present Department of Aerospace Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois Associate Head and Director of Graduate Studies January 2019 – Present Department of Aerospace Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois Blue Waters Professor January 2014 – Present College of Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois Research Aerospace Engineer and Joint Faculty Fellow October 2018 – Present Vehicle Technology Directorate Army Research Laboratory, Aberdeen Proving Grounds, Aberdeen, Maryland Visiting Professor June 2018 – December 2018 Department of Mechanical Engineering Stanford University, Stanford, California Visiting Professor June 2016 – December 2016 Department of Mechanical Engineering Stanford University, Stanford, California Donald Biggar Willett Faculty Scholar in Engineering April 2016 – Present Department of Aerospace Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois Visiting Professor May 2015 – July 2015 Department of Mechanics KTH Royal Institute of Technology, Stockholm, Sweden Visiting Professor January 2015 – March 2015 Department of Mechanical and Civil Engineering California Institute of Technology, Pasadena, California Associate Professor August 2013 – August 2020 Department of Aerospace Engineering University of Illinois at Urbana-Champaign, Urbana, Illinois 1 D.
[Show full text]
Turbulence: V&V and UQ Analysis of a Multi-Scale Complex System Presented by Parviz Moin, Curtis W
Turbulence: V&V and UQ Analysis of a Multi-scale Complex System Presented by Parviz Moin, Curtis W. Hamman and Gianluca Iaccarino 1 Introduction Turbulent motions of liquid and gases are ubiquitous and impact almost every aspect of our life, from the formation of hurricanes to the mixing of a cappuccino [1, 2, 3, 4, 5]. Nearly all human endeavors must contend with turbulent transport: turbulence is the rule, not the exception, in fluid dynamics. Energy, transportation, and the environment function on length and time scales where turbulence rapidly develops: even a simple, slow stroll leaves behind a turbulent wake with a wide range of scales (see table 2 for examples). With the advent of faster computers, numerical simulation of turbulent flows is becoming more prac- tical and more common [6, 7]. In this short note, we describe the fundamental physics and numerics needed for accurate turbulent flow simulations. Several illustrative examples of such simulations are presented. In addition, we show how simulations of turbulent flows contribute to breakthroughs in clean energy technologies, reduce dependence on volatile oil reserves and develop carbon-free sources of energy [8]. We also show how increased industrial competitiveness in high-tech sectors such as transportation and aerospace is made possible by high-performance computing, especially where physical experiments are impossible, dan- gerous or inordinately costly to perform [8]. 1.1 Aircraft and jet engines Aerospace industry was one of the early pioneers to apply computational fluid dynamics (CFD) to the design process. The primary motivation has always been to reduce expensive physical testing (e.g., wind tunnel tests) and the number of prototypes built during the design cycle.
[Show full text]
Aaron S. Towne
Aaron S. Towne Postdoctoral Fellow • Center for Turbulence Research • Stanford University Terman Engineering Laboratory • 488 Escondido Mall • Stanford, CA 94305 (626) 394-1630 • [email protected] • www.atowne.com EDUCATION & TRAINING Stanford University – Postdoctoral Fellow February 2016 - present Supervisors: Sanjiva K. Lele, Parviz Moin, Gianluca Iaccarino California Institute of Technology – Ph.D. Mechanical Engineering Defended December, 2015 Thesis title: Advancements in jet turbulence and noise modeling: accurate one-way solutions and empirical evaluation of the nonlinear forcing of wavepackets Research advisor: Tim Colonius Thesis committee: Fazle Hussain, Beverley McKeon, Guillaume Blanquart California Institute of Technology – M.S. Mechanical Engineering Received June, 2010 University of Wisconsin-Madison – B.S. Engineering Mechanics Received May, 2009 Graduated with Highest Distinction RESEARCH EXPERIENCE Center for Turbulence Research, Stanford University – Postdoctoral Fellow February 2016 – present Supervisors: Sanjiva K. Lele, Parviz Moin, Gianluca Iaccarino Topics: low-order modeling of turbulent flows, statistical jet noise models, uncertainty quantification Cascade Technologies, Inc. – Research Consultant Palo Alto, CA, February 2017 – present (part-time) Project manager: Guillaume A. Brès, Gianluca Iaccarino Topics: online data analysis, jet thrust computation and optimization California Institute of Technology – Graduate Research Assistant Computational Flow Physics Group, 2009-2015 Advisor: Tim Colonius Topics: fast solution methods for linear PDEs via spatial marching, jet turbulence and noise analysis and modeling, acoustic resonance in subsonic jets Towne – Page 1 of 6 United Technologies Research Center – Research Collaborator Aerodynamics & Acoustics group, 2013-2014 Team: Robert Schlinker, Ramons Reba, John Simonich, Daniel Shannon Topics: supersonic jet noise control Center for Turbulence Research Summer Program Stanford University, 2014 Hosts: Sanjiva K.
[Show full text]
Burning Ambition
THE ANNUAL 2013 DEIXIS BURNING AMBITION Leslie Dewan’s New Nuclear Reactor Design Launches into a Promising Company PAGE 5 DEPARTMENT OF ENERGY COMPUTATIONAL SCIENCE GRADUATE FELLOWSHIP SCIENCE GRADUATE OF ENERGY COMPUTATIONAL DEPARTMENT SPECIAL FEATURE LIGHT EXPERIMENTS, HEAVY DATA At Light Sources and Other Facilities, Computation Sifts Mounds of Complex Results PAGE 20 THE ANNUAL TABLE OF CONTENTS DEIXIS DEIXIS, The DOE CSGF Annual is published by the Krell Institute. Krell administers the Department of Energy Computational Science Graduate Fellowship (DOE CSGF) program for the DOE under contract DE-FG02-97ER25308. For additional information about the DOE CSGF 13 17 20 34 program, the Krell Institute or topics covered in this publication, please contact: Editor, DEIXIS Krell Institute 1609 Golden Aspen Drive, Suite 101 Ames, IA 50010 (515) 956-3696 www.krellinst.org/csgf NO SMALL AMBITIONS 4 20 36 Copyright 2013 Krell Institute. Practicum Profiles Special Feature Howes Scholar All rights reserved. Students in the Department of Energy Computational Science The Power of the Practicum Big Data Hits the Beamline Alumna Honored for Graduate Fellowship (DOE CSGF) take on big challenges, in terms of Research and Outreach difficulty or scale – or both. 5 Leslie Dewan DEIXIS (ΔΕΙΞΙΣ — pronounced da¯ksis) transliterated Leslie Dewan, for example, promotes an approach to nuclear Focus on Nuclear Waste from classical Greek into the Roman alphabet, means a display, mode or process of proof; the process of energy that concentrates on smaller reactors burning existing wastes Brings Fellow Fame 28 showing, proving or demonstrating. DEIXIS can more safely. Fellows Devin Matthews and Edgar Solomonik teamed up Alumni Profiles 38 also refer to the workings of an individual’s keen intellect, or to the means by which such individuals, on a summer project to rewrite a key quantum chemistry algorithm and 9 Devin Matthews Graduates Go on to Excel Alumni e.g.
[Show full text]
Download Chapter 85KB
Memorial Tributes: Volume 11 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 11 W I L L I A M C . R E Y N O L D S 1933–2004 Elected in 1979 “For development of theoretical bases for convective heat transfer analysis and contributions to fluid mechanics.” BY PARVIZ MOIN WILLIAM CRAIG REYNOLDS died of a malignant brain tu- mor at his home in Los Altos, California, on January 3, 2004, after 53 years at Stanford. He was 70 years old. Born in 1933 in Berkeley, Bill entered Stanford as an under- graduate and chose to remain there for the rest of his career. He completed his bachelor’s (1954), master’s (1955), and doctoral (1957) degrees at Stanford and then joined the faculty. He chaired the Department of Mechanical Engineering from 1972 to 1982 and from 1989 to 1992. As a scientist, Bill was the ultimate independent thinker, a self-starter, perhaps even a maverick. While following his muse, he might have repeatedly reinvented the proverbial wheel, but he also found novel and exciting ideas and designs that enriched the field of engineering and inspired the people around him. He was a true believer in the familiar maxim, “If you want some- thing done right, you had better do it yourself.” Not a natural delegator and an advocate of hands-on problem solving, he usu- ally found himself immersed in a variety of projects. Fortunately, he was blessed with boundless energy and indefatigable enthusi- asm. Bill’s main research interest was in turbulent flow, but he worked in nearly all branches and extensions of fluid mechan- ics, using experimental, theoretical, and computational meth- ods with equal facility.
[Show full text]
Chandana Anand a Dissertation
COMPUTATIONAL INVESTIGATIONS OF IGNITION CHARACTERISTICS OF LIVE FUELS AND DEPOSITION OF FIREBRANDS IN A TURBULENT BOUNDARY LAYER by CHANDANA ANAND A DISSERTATION Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Mechanical and Aerospace Engineering to The School of Graduate Studies of The University of Alabama in Huntsville HUNTSVILLE, ALABAMA 2018 In presenting this dissertation in partial fulfillment of the requirements for a doctoral degree from The University of Alabama in Huntsville, I agree that the Library of this University shall make it freely available for inspection. I further agree that permission for extensive copying for scholarly purposes may be granted by my advisor or, in his/her absence, by the Chair of the Department or the Dean of the School of Graduate Studies. It is also understood that due recognition shall be given to me and to The University of Alabama in Huntsville in any scholarly use which may be made of any material in this dissertation. Chandana Anand (date) ii DISSERTATION APPROVAL FORM Submitted by Chandana Anand in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mechanical Engineering and accepted on behalf of the Faculty of the School of Graduate Studies by the dissertation committee. We, the undersigned members of the Graduate Faculty of The University of Alabama in Huntsville, certify that we have advised and/or supervised the candidate of the work described in this dissertation. We further certify that we have reviewed the dissertation manuscript and approve it in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mechanical Engineering.
[Show full text]
Research Interests Employment Education Publications
Mahdi Abkar Associate Professor Department of Mechanical and Production Engineering, Navitas Email: [email protected] Research Interests Computational Fluid Dynamics. Turbulence. Boundary-Layer Meteorology. Large Eddy Simulation. Wind Energy. Uncertainty Quantification. Wind-Farm Modeling, Optimization and Control, Data-driven Modeling. Employment Aarhus University, Aarhus, Denmark, December 2020 - Present Associate Professor, Department of Mechanical and Production Engineering. Aarhus University, Aarhus, Denmark, July 2017 - November 2020 Tenure-track Assistant Professor in Mechanical Engineering - Department of Engineering. Center for Turbulence Research (CTR), Stanford University, Stanford, USA, 2015 - 2017 Postdoctoral Fellow in Mechanical Engineering. PI: Profs. Parviz Moin and John Dabiri. École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, 2014 - 2015 Postdoctoral Fellow in Mechanical Engineering. PI: Prof. Fernando Porté-Agel. Education École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, 2010 - 2014 Ph.D. in Mechanical Engineering Dissertation: Interaction of the atmospheric boundary layer with land-surface heterogeneity and wind turbines: numerical and analytical studies. Advisor: Prof. Fernando Porté-Agel. Amirkabir University of Technology (AUT), Tehran, Iran, 2007 - 2010 M.Sc. in Mechanical Engineering Dissertation: Thermal modeling of turbulent gas-particle flows using statistical models for particle-particle and particle-wall collisions. Advisor: Prof. Majid Saffar Avval. Amirkabir University of Technology (AUT), Tehran, Iran, 2003 - 2007 B.Sc. in Mechanical Engineering Publications The full list of my publications is available at my Google Scholar page: https://scholar.google.dk/citations?user=x5kiBfYAAAAJ&hl=en Membership American Physical Society (APS): Division of Fluid Dynamics (DFD). American Meteorological Society (AMS). European Geosciences Union (EGU). Peer Review Journal of Fluid Mechanics. Boundary-Layer Meteorology. Wind Energy.
[Show full text]
Aaron S. Towne
Aaron S. Towne Postdoctoral Fellow • Center for Turbulence Research • Stanford University Termin Engineering Laboratory • 488 Escondido Mall • Stanford, CA 94305 (626) 394-1630 • [email protected] • www.atowne.com EDUCATION & TRAINING Stanford University – Postdoctoral Fellow February 2016 - present Supervisors: Sanjiva K. Lele, Parviz Moin, Gianluca Iaccarino California Institute of Technology – Ph.D. Mechanical Engineering Defended December, 2015 Thesis title: Advancements in jet turbulence and noise modeling: accurate one-way solutions and empirical evaluation of the nonlinear forcing of wavepackets Research advisor: Tim Colonius Thesis committee: Fazle Hussain, Beverley McKeon, Guillaume Blanquart California Institute of Technology – M.S. Mechanical Engineering Received June, 2010 University of Wisconsin-Madison – B.S. Engineering Mechanics Received May, 2009 Graduated with Highest Distinction RESEARCH EXPERIENCE Center for Turbulence Research, Stanford University – Postdoctoral Fellow February 2016 – present Supervisors: Sanjiva K. Lele, Parviz Moin, Gianluca Iaccarino Topics: low-order modeling of turbulent flows, statistical jet noise models, uncertainty quantification Cascade Technologies, Inc. – Research Consultant Palo Alto, CA, February 2017 – present (part-time) Project manager: Guillaume A. Brès, Gianluca Iaccarino Topics: online data analysis, jet thrust computation and optimization California Institute of Technology – Graduate Research Assistant Computational Flow Physics Group, 2009-2015 Advisor: Tim Colonius Topics: fast solution methods for linear PDEs via spatial marching, jet turbulence and noise analysis and modeling, acoustic resonance in subsonic jets Towne – Page 1 of 6 United Technologies Research Center – Research Collaborator Aerodynamics & Acoustics group, 2013-2014 Team: Robert Schlinker, Ramons Reba, John Simonich, Daniel Shannon Topics: supersonic jet noise control Center for Turbulence Research Summer Program Stanford University, 2014 Hosts: Sanjiva K.
[Show full text]
UNIVERSITY of CALIFORNIA, SAN DIEGO Implications of Three
UNIVERSITY OF CALIFORNIA, SAN DIEGO Implications of Three-Dimensional Urban Heating on Fluid Flow and Dispersion A Dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Engineering Sciences (Mechanical Engineering) by Negin Nazarian Committee in charge: Professor Jan P. Kleissl, Chair Professor Daniel Tartakovsky, Co-Chair Professor Joel Norris Professor Kyaw Tha Paw U Professor Sutanu Sarkar 2015 Copyright Negin Nazarian, 2015 All rights reserved. The Dissertation of Negin Nazarian is approved, and it is acceptable in quality and form for publication on microfilm and electronically: Co-Chair Chair University of California, San Diego 2015 iii TABLE OF CONTENTS Signature Page . iii Table of Contents . iv List of Figures . vi List of Tables . .x Acknowledgements . xi Vita......................................... xiv Abstract of the Dissertation . xv Chapter 1 Introduction and Motivation . .1 1.1 Objectives, Novelty of the Research and Outline . .4 Chapter 2 Background and Theory . .8 2.1 Atmospheric Boundary Layer: Characteristics and Structure8 2.2 Urban Physics . 10 2.2.1 Scale of Interest . 10 2.2.2 Research Methods . 11 2.2.3 Atmospheric Flow and Turbulence . 15 2.2.4 Statistical Description of Turbulence . 19 Chapter 3 Thermal Effects of Urban Design . 29 3.1 Introduction . 29 3.2 Model Description . 32 3.3 Validation . 37 3.4 Results . 38 3.4.1 Diurnal Variation of Urban Temperature and Energy Balance Components . 38 3.4.2 Effect of Ground Surface Albedo . 43 3.4.3 Effect of Canyon Aspect Ratio . 44 3.4.4 Effect of Wind Direction and Speed . 48 3.4.5 Summary .
[Show full text]