Large deformations in mechanics

Lecture - April 13, 2011 (Wednesday), 10:00
Michel Frémond, Dipt. Ingegneria Civile, Univ. Roma II Tor Vergata

Large deformations of a solid are investigated. We use a polar decomposition of gradient matrix F = RW (R is rotation matrix, W is stretch matrix). Large deformations of solids involve local spacial interactions either in an extension or in a rotation. Because local interactions are well described by spacial gradient, matrix W intervene for extensions and matrix gradR intervene for rotations. Thus the free energy depends on W and on gradR. Moreover, free energy takes into account the local impenetrability condition. Reactions to this impenetrability condition are important in constitutive laws.  »»» 

Turbulence in (normal) fluids

Lecture - February 21, 2011 (Monday), 14:00-15:00
Doc. Ing. Václav Uruba, CSc.

Turbulence will be introduced as the typical state of real flowing viscous fluids (historical overview). Attributes of turbulence will be presented (diffusivity, deterministic chaos, fractal structure…). A mathematical model will be introduced and its basic properties will be shown including the Kolmogorov theory. Then a few phenomenological aspects will demonstrate the typical features of the phenomenon (stability, complexity…).

Large-Eddy Simulation on Plume Dispersion within Regular Arrays of Cubic Buildings

Lecture - September 6, 2010 (Monday) at 14.30
Dr. Hiromasa Nakayama

Dr. Hiromasa Nakayama is a researcher in the Japan Atomic Energy Agency, Ibaraki, Japan.

Abstract: There is a potential problem that hazardous and flammable materials are accidentally or intentionally released into the atmosphere, either within or close to populated urban areas. For the assessment of human health hazard from toxic substances, the existence of high concentration peaks in a plume should be considered.  »»» 

Unified Micro-Macro-Models and Finite Element Computations of Mono- and Polycrystalline Cyclic Martensitic Phase Transformations

Lecture - May 27, 2010 (Thursday), 14:00–15:00
Erwin Stein and Gautam Sagar, Institute of Mechanics and Computational Mechanics, Leibniz Universität Hannover, Germany

We kindly invite you to the following two lectures:  »»» 

Research Activities at the LNEC Structures Department

Lecture - May 27, 2010 (Thursday), 15:00-16:00
Rogerio Bairrao, Earthquake Engineering and Structural Dynamics Division (NESDE), Lisboa, Portugal

We kindly invite you to the following two lectures:  »»» 

High-order LES benchmarking of confined rotor-stator flows

Lecture - May 25, 2010 (Tuesday) 14:00
Sébastien Poncet, Laboratoire M2P2, UMR 6181 CNRS – Aix-Marseille Université

The highly accurate simulation of turbulent rotating flows within cavity is of interest for both engineering applications, such as designing rotational machinery, and fundamental research, as one of the simplest cases where the turbulent boundary layers are three-dimensional. Attempting to compute these flows using statistical approaches has had only partial success.  »»» 

Global instability of the rotating disk boundary layer

Lecture - May 19, 2010, 10:00 -11:00 Wednesday
Prof. Jonathan Healey, Keele University, Anglie

When a disk rotates at constant angular velocity in otherwise still fluid a boundary layer flow is established close to the disk. Obviously the local velocity of the disk increases with radius, but to a first approximation, this radial variation of the basic flow can be neglected to produce a "local" parallel-flow linear stability theory.  »»» 

Assessment of Physical Activity of a Human Body with Consideration of the Thermodynamics System

Lecture - February 9, 2010 (Tuesday), 10:00 -11:00
Dipl.-Ing. Philipp Rauschenberger, Institut für Thermodynamik der Luft- und Raumfahrt, Universität Stuttgart, Germany

Abstract: Model of the human cardiovascular system is applied for the quantitative evaluation of the human activity. The entropy production was used as a relevant quantity. The comparison with the ergonometric tests is shown.

Presenter: Dipl.-Ing. Philipp Rauschenberger

Mechanical and ultrasonic testing of human skin in-vivo

Lecture - February 10, 2010 (Wednesday), 10.00–11.00
Benoît Emprin, Université de Franche-Comté, Besançon, France.

Resume: The objective of ERASMUS project was further development and testing the new noninvasive diagnostics method of human skin under variable mechanical loading in-vivo. The method is based on monitoring instantaneous changes of ultrasound propagation along the skin.  »»» 

Overview and selected results of jet impingement heat transfer research at Trinity College Dublin

Lecture - November 30, 2009 (Monday), 8:00-10:00
Dr. Tim Persoons,Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Ireland

This seminar gives an introduction of the research activities in Prof. Darina Murray's heat transfer group at Trinity College Dublin, focusing specifically on synthetic jet impingement.  »»» 

Anisotropic higher-order bounds and estimates based on crystallographic and morphological information

Lecture - October 14, 2009 (Wednesday), 10.00
Prof. Dr.-Ing. habil. Thomas Böhlke

The Czech Society for Mechanics – the expert group for Computational mechanics and the Institute of Thermomechanics AS CR wish to invite you to a lecture by  »»» 

The phenomenon of vortex core precession and development of the theory of helical vortices

Lecture - October 12, 2009 (Monday),10:00-11:00
Dr. Pavel A. Kuibin, Institute of Thermophysics, Siberian Branch of RAS, Lavrentyev Ave., 1, Novosibirsk, 630090, Russia


The lecture is devoted to development of the Theory of helical vortices. The main items of the theory are as follows:  »»» 

Phase Reconstruction of Shear Layer Instabilities Using Proper Orthogonal Decomposition

Lecture - September 25, 2009 (Friday), 10:00-11:00
Dr. Kilian Oberleithner, Technische Universität Berlin, Fachgebiet Experimentelle Strömungsmechanik

Proper Orthogonal Decomposition (POD) is widely used in the field of Reduced Order Modeling (ROM). Based on a large data set of a turbulent flow, a few POD modes are sufficient to characterize the dynamics of the underlying flow. Instability waves that grow in turbulent shear layers are usually represented by two coupled POD modes.  »»» 

Partition-Of-Unity Finite Elements For Quantum Mechanical Calculations in Condensed Matter

Lecture - September 24, 2009 (Thursday), 1:30pm
Dr. John E. Pask, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA

The Institute of Physics AS CR - Dept. of Theory of Condensed Matter, the Institute of Thermomechanics AS CR and the Czech Society for Mechanics – the expert group for Computational mechanics, jointly invite you to a lecture  »»» 

Compressor leading edges: An industrial game changer

Lecture - July 27, 2009 (Monday), 10:00-11:30
Dr. Rob Miller, Whittle Laboratory, Cambridge University

Dr. Rob Miller undertook his undergraduate, PhD and a research fellowship at Oxford University. For the last eight years he has been a Lecturer in Turbomachinery at the Whittle Laboratory in Cambridge University.  »»» 

Instability of Stratified Flows

Lecture - May 12, 2009 (Tuesday), 9.30-10.30
Dr. Jonathan Healey, Keele University, Great Britain

Dr. J. Healey graduated with a degree in physics at Oxford University in 1987, where he also obtained a DPhil in physics in 1991. His doctoral thesis was concerned with the analysis of phase spaces reconstructed from time series data. In 1991 he was appointed to a post-doctoral position in the Engineering Department at Cambridge University to work on the laminar-turbulent transition of boundary layers. In 1996 he was appointed first to a temporary lectureship in the Mathematics Department at Brunel University, and then to a lectureship in the Mathematics Department at Keele University.  »»» 

Stratification and rotation effects in environmental flows

Lecture - April 29, 2009 (Wednesday), 14:00-15:30
Prof. Yu.D. Chashechkin, Institute for Problems in Mechanics of the RAS

Чашечкин Юлий Дмитриевич (Chashechkin Yu.D.)
Professor and Head of the Laboratory of Fluid Mechanics of the Institute for Problems in Mechanics of the Russian Academy of Sciences
101/1 prospect Vernadskogo, Moscow 119574, Russia,
(E-mail: chakin@ipmnet.ru / Fax: 8 499 739 9531 / Phone 7495434 0192)  »»» 

Upwind techniques of finite element methods for convection dominant flow problem

Lecture - April 17, 2009 (Friday), 10:00–11:30
prof. Atsushi Suzuki, Kyushu University, Fukuoka, Japan & Czech Tecnical University in Prague

Prof. Atsushi Suzuki is the assistant professor of Kyushu University in Japan and also visiting researcher at Czech Technical University in Prague.  »»» 

Fundamentals and Applications of Active Flow Control

Lecture - April 8, 2009 (Wednesday), 14:00
Prof. Avraham Seifert, University Tel Aviv

Prof. Seifert will present two recent research projects conducted in Tel Aviv using active flow control. The first project describes taking airfoil separation control concept to flight while the second describes the application of the newly developed suction and oscillatory blowing actuator for aerodynamic drag reduction of large trucks.  »»» 

Boundary layer experiments in a water channel

Lecture - March 31, 2009, Tuesday,14:00-16:00
dr. ir. Hendrik de Lange, Eindhoven University of Technology

Main topics of the research of Dr. de Lange are the boundary layer transition, heat transfer and cooling in gas turbines and the thermodynamics and transient behavior of turbine/compressor systems.The flat plate boundary layer experiments in a water channel have been performed. The particle image velocimetry (PIV) was used to analyze the coherence of flow structures in the vicinity of breakdown to turbulence.  »»» 

Flow Control Using Fluidic Actuation

Lecture - 21 October 2008 (Tuesday), 10:00
Prof. Ari Glezer, Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, USA

As you surely know, prof. Ari Glezer is the originator of the term „synthetic jet“ and the founder of this particular branch of fluid mechanics.  »»» 

Non-Equilibrium Thermodynamics of Boundary Conditions

Lecture - October 8, 2008 (Wednesday), 11:00
Prof. Dr. Hans Christian Öttinger, ETH Zurich, Institute of Polymers, Switzerland

Abstract: While the field equations for complex fluids are usually formulated such that they respect the principles of nonequilibrium thermodynamics, the choice of  »»» 

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