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An explanation of the drag reduction via polymer solute

Submitted by Konstantin Volokh on

The remarkable phenomenon of the drag reduction via addition of small amounts of polymer molecules to a Newtonian solvent was observed experimentally long ago. However, the theoretical explanations of this observation are not overwhelming yet. In this note, we present a possible theoretical account of the phenomenon. It is based on the use of the Navier–Stokes model with viscous strength for the solvent and the upper-convected Maxwell model for the polymer solute.

Slides for WCCM 2018 Workshop on funding opportunity for computational mechanics

Submitted by WaiChing Sun on

Dear colleagues, 

I have been just notified that the slides of the talks given by program managers on funding opportunity in WCCM New York have been posted in the official website of WCCM New York. You can download the slides from the following URL: 

http://www.wccm2018.org/workshop

Thank you again for your support to WCCM New York. 

Best Regards,

WaiChing Sun

 

Post-Doctoral Position – Thermal Transport in Crystalline Solids

Submitted by AnterEl-Azab on

The Materials Theory Group at the School of Materials Engineering of Purdue University has a post-doctoral opening in the area of physics of thermal transport in crystalline solids. The postdoc will use Boltzmann Transport Equation (BTE) approach to investigate the phonon and electron thermal transport in crystalline solids with lattice defects. A solid state physics background is highly desired for this position but applicants with a strong, closely related theory background from materials science or other engineering disciplines will be considered. The ideal candidate is one who is strongly interested in the fundamental theoretical concepts related to thermal transport and related computational modeling, and must have excellent programming skills in Fortran and/or C++. For inquiry please send an email to Professor Anter El-Azab (aelazab [at] purdue.edu). The position will remain open until filled. Interested candidates can send a curriculum vita with list of publications, a one-page or less statement of research interests and the names of at least two references, with their email addresses and telephone numbers to the provided email. The Materials Theory Group performs theoretical and computational research in the areas of mesoscale plasticity and dislocation dynamics, radiation effects in materials, microstructure evolution, phase field method development, phonon and electron thermal transport in crystalline solids, and computational methods for materials science and mechanics. The group has over ten graduate students and postdocs, with a wide range of collaborations.
EEO/AA Policy
Purdue University is an EOE/AA employer. All qualified individuals, including minorities, women, individuals with disabilities, and veterans are encouraged to apply.

Post-Doctoral Position – Thermal Transport in Crystalline Solids

Submitted by AnterEl-Azab on

The Materials Theory Group at the School of Materials Engineering of Purdue University has a post-doctoral opening in the area of physics of thermal transport in crystalline solids. The postdoc will use Boltzmann Transport Equation (BTE) approach to investigate the phonon and electron thermal transport in crystalline solids with lattice defects. A solid state physics background is highly desired for this position but applicants with a strong, closely related theory background from materials science or other engineering disciplines will be considered. The ideal candidate is one who is strongly interested in the fundamental theoretical concepts related to thermal transport and related computational modeling, and must have excellent programming skills in Fortran and/or C++. For inquiry please send an email to Professor Anter El-Azab (aelazab [at] purdue.edu). The position will remain open until filled. Interested candidates can send a curriculum vita with list of publications, a one-page or less statement of research interests and the names of at least two references, with their email addresses and telephone numbers to the provided email. The Materials Theory Group performs theoretical and computational research in the areas of mesoscale plasticity and dislocation dynamics, radiation effects in materials, microstructure evolution, phase field method development, phonon and electron thermal transport in crystalline solids, and computational methods for materials science and mechanics. The group has over ten graduate students and postdocs, with a wide range of collaborations.
EEO/AA Policy
Purdue University is an EOE/AA employer. All qualified individuals, including minorities, women, individuals with disabilities, and veterans are encouraged to apply.

Post-Doctoral Position – Thermal Transport in Crystalline Solids

Submitted by AnterEl-Azab on

The Materials Theory Group at the School of Materials Engineering of Purdue University has a post-doctoral opening in the area of physics of thermal transport in crystalline solids. The postdoc will use Boltzmann Transport Equation (BTE) approach to investigate the phonon and electron thermal transport in crystalline solids with lattice defects. A solid state physics background is highly desired for this position but applicants with a strong, closely related theory background from materials science or other engineering disciplines will be considered. The ideal candidate is one who is strongly interested in the fundamental theoretical concepts related to thermal transport and related computational modeling, and must have excellent programming skills in Fortran and/or C++. For inquiry please send an email to Professor Anter El-Azab (aelazab [at] purdue.edu). The position will remain open until filled. Interested candidates can send a curriculum vita with list of publications, a one-page or less statement of research interests and the names of at least two references, with their email addresses and telephone numbers to the provided email. The Materials Theory Group performs theoretical and computational research in the areas of mesoscale plasticity and dislocation dynamics, radiation effects in materials, microstructure evolution, phase field method development, phonon and electron thermal transport in crystalline solids, and computational methods for materials science and mechanics. The group has over ten graduate students and postdocs, with a wide range of collaborations.
EEO/AA Policy
Purdue University is an EOE/AA employer. All qualified individuals, including minorities, women, individuals with disabilities, and veterans are encouraged to apply.

Constraint on a beam bottom surface not on the neutral axis

Submitted by Yuchi Kang on

Hi!

I have a question regarding the beam deflection. As shown in the pic, the roller constraint is applied on the bottom of the beam(Beam A) rather than neutral axis(Beam B). Could anybody help to provide some information about Beam A hand calculation?

Thanks!

https://files.fm/u/54jwqnru#sign_up

Postdoctoral positions at Georgia Institute of Technology

Submitted by Phanish Suryan… on

There are two openings for the position of post-doctoral scholar starting immediately for the US Department of Energy (DOE) Computational Chemical Sciences (CCS) project titled “SPARC-X: Quantum simulations at extreme scale — reactive dynamics from first principles” at Georgia Institute of Technology. This is a four year interdisciplinary research project being led by Phanish Suryanarayana, Andrew J Medford, Edmond Chow, and Polo Chau in collaboration with John E Pask (LLNL).