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Two Postdoctoral Positions in Computational Geomechanics at the Hong Kong Polytechnic University
The Department of Civil and Environmental Engineering of the Hong Kong Polytechnic University invites applications for two postdoctoral positions in Computational Geomechanics. The positions offer the possibility of working on multiscale multiphysics modelling of fluid-structure-soil interaction in offshore geotechnics. Applicants must have a Ph.D. degree in Geotechnical Engineering, Computational Mechanics or other relevant disciplines and have the ability to build an independent, externally funded research program at the forefront of their field. Programming experience in C++/Fortran/etc. and numerical modelling experience using FEM/DEM/CFD code(s) are required. The positions are expected to get started as early as possible. Contract duration: 1~2 years (extensions are possible based on the performance of research achievements).
Closing date for applications: You may apply for this position until March 14, 2021 by email to the contacts given below. Interviews of shortlisted candidates will be scheduled with early close of application depending on the number of candidates received.
Contacts: Please submit an up-to-date curriculum vitae C.V. and a letter stating your motivation to apply and your key relevant qualities to Dr Yin-Fu JIN (yinfu.jin@polyu.edu.hk) and Dr. Jie YANG (doc.jie.yang@gmail.com). Information of the research group can be found via: http://geoinvention.com/.
Granular Matter Webinar Series (24 November 2020)
The 4th Granular Matter Series Webinar will take place next Tuesday, 24 November. The speaker is Ken Kamrin, the topic and abstract are:
To the Continuum and Beyond!
The ability to predict granular flows efficiently has been a major challenge for years. An accurate and robust continuum model would be ideal, as it could lead to fast simulation of industrial and geo-scale problems. However, there are a number of granular flow behaviors that complicate the development of a continuum treatment including coupled history effects, nontrivial phase change, pressure-sensitive yielding, nonlocal effects, and shear banding phenomena. Rather than attempt to combine all these effects together, this talk will begin by identifying a class of problems that tend to be well-predicted using a very simple continuum treatment. These are problems based on intrusion, where the intrusive dynamics of solid objects (e.g. locomotion, impact) is the primary interest. We then discuss two ways to extend this basic continuum framework with nonstandard “add-ons”, in order to handle various complications. First, we will discuss the state of affairs in nonlocal modeling approaches, and focus on some new results pertinent to the physics of nonlocality. Secondly, as an alternative to adding more complexity to the continuum model, we will discuss a hybridized DEM/continuum method that allows us to adaptively choose subdomains in a problem to be treated with continuum modeling vs discrete element modeling. This allows us to keep a simple and fast-to-solve continuum model almost everywhere, while providing a more precise DEM treatment in zones that fall outside the scope of the continuum model.
For more information, this is the landing page: https://www.springer.com/journal/10035/updates/18300828
And this is the link to the meeting room: https://global.gotomeeting.com/join/565338397
