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Issue # 1, 2019

Content

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  1. RESEARCH ASSOCIATE POSITION AT COVENTRY UNIVERSITY (UK)
  2. PHD POSITION ON ALFVEN WAVES AND MHD TURBLUENCE (GRENOBLE/CNRS/COVENTRY)
  3. PHD POSITION ON MAGNETOCONVECTION BEYOND THE CHANDRASEKHAR LIMIT (GRENOBLE/COVENTRY/ILMENAU)
  4. SCHEDULE OF CONFERENCES ON MHD AND RELATED TOPICS
  5. NEXT HYDROMAG NEWSLETTER

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  1. RESEARCH ASSOCIATE POST ON THE NON-LINEAR STATES OF CONVECTION IN THE EARTH CORE FUNDED BY THE LEVERHULME TRUST AT COVENTRY UNIVERSITY (UK)

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(from Alban Potherat, Coventry, UK )

A Research Associate position in theoretical fluid mechanics is offered at Coventry University (UK). The project concerns convection under a magnetic field in the so called “tangent cylinder” region of the Earth’s core. Much of the mystery surrounding the Earth’s dynamics (its magnetic field, plate tectonics) lies in the nature of the convective patterns within the Earth’s liquid core, and in particular in the region called the “Tangent Cylinder”. What are the possible convective states under the combined influence of the Earth’s rotation and magnetic field, and how erratic are they? This thesis is part of a theoretical and experimental research program funded by the prestigious Levehulme Trust (http://www.leverhulme.ac.uk), that aims at answering these questions. The purpose of this thesis is to theoretically predict the possible nonlinear convective states for the first time. We will then evaluate which of these states are mostly likely to underpin the Earth’s core convection.

The Research Associate will conduct the theoretical and numerical analysis of the problem under the joint supervision of Prof. Alban Pothérat (http://users.complexity-coventry.org/~potherat/index.html) and Dr Chris Pringle. The study will seek the possible structure of convection by means of advanced stability theory and branch tracking method, to unveil the possible states. In the frame of the research program, the work is purely theoretical/numerical and will be conducted in collaboration with an experimental study that will seek to reproduce and visualise these non-linear states in an experimental model of the Earth Core. Successful candidates are expected to hold a PhD in fluid mechanics or a related discipline, and to have demonstrated excellent abilities in mathematics and programming. The successful candidate will be part the vibrant team of internationally recognised academics and PhD students forming the fluid dynamics group within the Applied Mathematics Research Centre, whose work has been ranked at 83% world-class at the UK’ latest Research Excellence Framework in 2014. This unit is part of the Flow Measurement and Fluid Mechanics Research Centre, specialises in theoretical and experimental fluid mechanics. It is especially renowned for its work on magnetohydrodynamics (MHD), turbulence, stability and geophysical flows. The group closely collaborates with partner groups in world-leading institutions in Australia, China, France, Germany and the UK.

Informal enquiries are welcome: please forward a CV and academic records to Prof. Alban Pothérat (alban.potherat(at)coventry.ac.uk).

PDF Version.

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  1. PHD ON ALFVEN WAVES AND MAGNETOHYDRODYNAMIC TURBLUENCE AT GRENOBLE UNIVERSITY/CNRS/COVENTRY UNIVERSITY

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(from Alban Potherat, Coventry, UK )

Under the joint supervision of Alban Pothérat, (LnCMI Lab/CNRS and Coventry University) (http://users.complexity-coventry.org/~potherat/), Laurent Davoust (Grenoble-INP, SIMAP Lab) and François Debray (LnCMI/CNRS).

Applications are invited for a PhD (possibly including an MSC internship) in experimental fluid mechanics at the LNCMI-G (Grenoble High Magnetic Field Laboratory, http://lncmi.cnrs.fr/?lang=en). The topic concerns the experimental study of turbulence in liquid metals in a very high magnetic field. Turbulence is one of the major challenges of classical physics. Here, we seek to understand the role played by the propagation of magneto-mechanical waves (called Alfven waves) in the statistical and dissipative properties of turbulence and in its transition between two- and three-dimensional states. This type turbulence plays a key role in the dynamics of a number of astrophysical, geophysical, amongst which stellar accretion disks, planetary interiors but is also suspected to appear in engineering problems such as the cooling of nuclear fusion reactors. Until now, Alfven waves have been difficult to reproduce in laboratories because of the extreme conditions in which they appear (high Reynolds numbers and/or high magnetic fields).

The PhD student will be conducting an experimental project during which a turbulent flow is generated within a experimental device filled with liquid metal and placed inside of one the large magnets available at LNCMI in Grenoble, which are capable of producing some of the strongest magnetic fields in the world. In the extreme fields available at LNCMI, the electromagnetic force becomes propagative on the top being diffusive (propagation of Alfvén waves). The goal of this PhD is to use this unique combination of features to reproduce in the laboratory some of the mechanisms that occur in astrophysical or planetary systems and in the context of nuclear energy production, so as to understand them in detail.

The flow will be diagnosed by means of advanced metrology techniques such as ultrasound velocimetry and electric potential mapping. The PhD student will be in charge of running and improving the experimental device, interpreting the results so as to better understand the observed flow regimes. The combination of extreme magnetic fields and this unique experimental device developed by our joint team in Coventry and Grenoble offers for the first time a possibility to extensively map astrophysical and planetary phenomena that have been extremely difficult to probe direclty until now.

Applicants are required to hold, or be on course for an MSc in fluid mechanics or related speciality (Mathematics or Physics). To apply please forward complete academic records and CV to Alban Pothérat (Coventry University, alban.potherat(at)coventry.ac.uk, +44(0)2476 88 88 65), Laurent Davoust (Grenoble-INP, +33(0)476825206, Laurent.Davoust(at)simap.grenoble-inp.fr ) or Francois Debray, LNCMI (francois.debray(at)lncmi.cnrs.fr, +33(0)476 88 12 44). Informal contacts per phone or email are recommended.

PDF Version.

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  1. MSc+PhD ON MAGNETOCONVECTION BEYOND THE CHANDRASEKHAR LIMIT

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(from Alban Potherat, Coventry, UK )

Under the joint supervision of
Alban Pothérat, (Coventry University, UK, http://users.complexity-coventry.org/~potherat/),
Jörg Schumacher (Technische Universität Ilmenau, Germany, https://www.tu-ilmenau.de/tsm/ ),
François Debray (LNCMI/CNRS Grenoble, France, http://lncmi-g.grenoble.cnrs.fr/)

A PhD position in experimental fluid mechanics is open at the High Magnetic Field Laboratory in Grenoble (CNRS/ France). The topic concerns the experimental study of Rayleigh-Bénard convection under the influence of high magnetic fields. This type of convection plays a crucial role in numerous natural and industrial processes: for example in the tachocline layer of the Sun, in the liquid core of the Earth, but also in material processing such as the pulling of silicon ingots or the continuous casting of metallic alloys. In general, magnetic fields introduce a dissipative mechanism through the Joule effect which tends to damp, or even suppress convection. This has an impact on characteristic patterns that form in a convective flow. Chandrasekhar (Physics Nobel Prize 1983) derived the theoretical value of the critical Rayleigh number beyond which convection survives for a given magnetic field in the ideal case of a fluid layer confined between two infinite planes. Nevertheless, when lateral walls are present, convective plumes could potentially persist below this limit and thus locally promote enhanced heat fluxes.

This effect has, until now, never been observed in the laboratory, partly because typical electrically conducting fluids are opaque and thus hard to probe. The purpose of this PhD project is to observe the impact of strong magnetic fields on the formation of convective structures and to characterise these states and their possible transition into turbulent convection. For this, the student will be taking advantage of a new technique recently developed by the groups in Coventry and Grenoble, which consists of using a weakly conducting but transparent electrolyte placed in very high magnetic fields. This technique makes it possible to obtain precise maps of the velocity fields by means of advanced optical measurement methods using laser imaging technology (such as Particle Image Velocimetry or Laser Doppler Anemometry).

The PhD student will be in charge of this experimental project and will collaborate with theoreticians from TU Ilmenau in Germany who will be conducting numerical simulations of this problem in parallel, to compare the results.

Candidates must have a master degree in engineering or physics (300 ECTS credit points) and be motivated to conduct technically advanced experimental projects. Experience in fluid mechanics and/or measurement technology is welcomed. The PhD will benefit from a Co-tutelle between Coventry University (UK) and TU Ilmenau (Germany) leading to a PhD award in each university. The work will be physically based in the laboratory in Grenoble (France) for most of the time with extended stays at sites in the UK and Germany. The position runs for a period of three years and is expected to start in spring 2019.

To apply, please send a CV and a full transcript of academic records to:
Alban Pothérat (Coventry University, alban.potherat(at)coventry.ac.uk)
Jörg Schumacher (TU Ilmenau, joerg.schumacher(at)tu-ilmenau.de)
Francois Debray (LNCMI, francois.debray(at)lncmi.cnrs.fr ).

Informal enquiries are welcome. Please contact Alban Pothérat (+44 2476 88 88 65), Jörg Schumacher (+49 3677 69-2428) TU Ilmenau, or François Debray (+33 4 76 88 12 44), LNCMI.

PDF Version.

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  1. SCHEDULE OF CONFERENCES ON MHD AND RELATED TOPICS

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  1. NEXT HYDROMAG NEWSLETTER

—————————–
will be issued in the end of April, 2019. Please send information you wish to be included into this issue to

a.pedcenko(at)coventry.ac.uk

not later than 15 of April 2019. If you have an urgent announcement, we can publish at http://hydromag.eu between the issues.

—–
Alex Pedcenko
Coventry University
Priory Street Coventry
CV1 5FB United Kingdom
Tel: +44(0)24-77658974
e-mail: a.pedcenko(at)coventry.ac.uk

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Issue No. 1, 2018

 

Hydromag Newsletter

Issue No. 1, 2018

Content

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  1. POSITION AT RIO-TINTO: MODELLING ENGINEER (MHD/CFD)
  2. Ph.D. FELLOWSHIP ON THE NON-LINEAR STATES OF CONVECTION IN THE EARTH CORE AT COVENTRY UNIVERSITY (UK)
  3. Ph.D IN THEORETICAL FLUID MECHANICS ON QUASI-TWO DIMENSIONAL ATMOSPHERIC FLOWS AT COVENTRY UNIVERSITY (UK) – MONASH UNIVERSITY (AUSTRALIA)
  4. SCHEDULE OF CONFERENCES ON MHD AND RELATED TOPICS
  5. NEXT HYDROMAG NEWSLETTER

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  1. POSITION AT RIO-TINTO: MODELLING ENGINEER (MHD/CFD)
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    (from Benoit Bardet, France )

Modelling Engineer

•    Great opportunity to work for a global company at the forefront of mining
•    Excellent work culture where people are valued and respected
•    Develop your potential at our operations in Saint-Jean-de-Maurienne

Rio Tinto is a leading global mining and metals group that focuses on finding, mining, processing and marketing the earth’s mineral resources.
We have been in business for more than 140 years and remain focused on the long term. We’re committed to sustainable and innovative ways to do business, deliver results and build a great work environment. It’s how we grow – it’s how you grow.

We are a diverse team of talented, enthusiastic individuals who foster a culture of inclusion. No matter how they may differ, our people share one thing in common. It’s a belief that work is more rewarding when we are accepted and valued for our differences, not judged by them. We all have something to contribute, and it’s this contribution that makes for a great organisation and fulfilling career.

The opportunity

We are looking for a Modelling Engineer to support the development of new technologies. As part of our research laboratory on manufacturing (LRF), the modelling team is at the heart of the electrolysis development activity for Group Plants and Technology Sales. The modelling team is composed of 4 engineers within a global team with a centre in Canada. Its mission is to design technical solutions that improve the performance of industrial cells — a world leading
technology in the Aluminium industry (AP18, AP30, AP50), and to support the development of innovative technologies. The design of these cells relies on high-level modelling tools developed through partnerships with world-class universities.

Rio Tinto is a global leader in aluminium, one of the world’s most widely used metals. Active in the sector for more than 110 years, we operate large-scale, high-quality bauxite mines and alumina refineries; alongside the world’s most modern and competitive aluminium smelters portfolio. Our industry leadership includes our benchmark smelting technology and enviable hydropower position, key strengths in today’s carbon-constrained world.

As part of the Technology and Project Development Group, the LRF develops the word-leading electrolysis technology for aluminium. It is located at Saint Jean de Maurienne in French Savoie region, less than an hour drive from Chambéry and Grenoble.

What the job entails

To support the development of new technologies, the Modelling Engineer MHD/CFD (Magneto Hydro Dynamic / Computational Fluid Dynamic) will be in
charge of developing modelling tools and producing and coordinating studies in this field. The incumbent will develop globally a network of external partners (Universities, companies specialised in MHD/CFD).

Reporting to the Modelling Manager, you will be:

•    Developing or coordinating the development of MHD/CFD modelling tools
•    Producing or piloting the delivery of technical studies aiming at improving or developing existing or new processes
•    Participating actively in a network of global partners in the field of MHD/CFD
•    Supporting all tests led by our R&D teams in the field
•    Analysing client requests, understanding their  needs and establishing a project management strategy with clients
•    Managing priorities (the influence of internal and external clients with different objectives can impact the R&D programme and delay the implementation of solutions)
•    Proposing innovative ideas and technical expertise, including identifying ways to capture and use this expertise
•    Applying new methods to produce new ideas
•    Interacting constantly with modelling team members (LRF and CRDA (Canada),  the Senior Technology Advisor and the Electrolysis Programme Director
•    Maintaining robust relationships with the managers of Technology Sales and internal clients
•    Collaborating with other departments of LRF (especially engineering) and different project managers
•    Collaborating with teams responsible for the development of cells (technological platform)
•    Collaborating with external partners (vendors and world-class universities)

What you will need for this role

To succeed in this role, you will have:

•    Engineering degree (Master or Ph.D.)
•    5 to 10 years of modelling experience ideally in MHD/CFD
•    Advanced knowledge of digital modelling codes ( thermal transfer, mechanics of fluids, magneto-hydrodynamic)
•    Analytical skills
•    Good communication skills in a multicultural and international environment
•    Disciplined and autonomous
•    French and English proficiency

After having deepened his/her modelling experience, the incumbent will be able to progress towards more operational roles in R&D or plant (plant tests, method engineer…) in the longer term.

Please note, in order to be successfully considered for this role you must complete all pre-screening questions.

If you would like to know more about careers at Rio Tinto, you can like us on Facebook, follow us on Twitter or join us on LinkedIn.

Apply Online at https://riotinto.csod.com/ats/careersite/JobDetails.aspx?site=1&id=18245

PDF Version: Modelling Engineer RTA LRF

 

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  1. Ph.D. FELLOWSHIP ON THE NON-LINEAR STATES OF CONVECTION IN THE EARTH CORE AT COVENTRY UNIVERSITY (UK)
    —————————–
    (from Alban Potherat, UK )

LEVERHULME TRUST Ph.D. FELLOWSHIP ON THE NON-LINEAR STATES OF CONVECTION IN THE EARTH CORE AT COVENTRY UNIVERSITY (UK)

A Ph.D. position in theoretical fluid mechanics is offered at Coventry University (UK). The project concerns convection under a magnetic field in the so called “tangent cylinder” region of the Earth’s core. Much of the mystery surrounding the Earth’s dynamics (its magnetic field, plate tecnonics) lies in the nature of the convective patterns within the Earth’s liquid core, and in particular in the region called the “Tangent Cylinder”. What are the possible convective states under the combined influence of the Earth’s rotation and magnetic field, and how erratic are they? This thesis is part of a theoretical and experimental research
program funded by the prestigious Levehulme Trust (http://www.leverhulme.ac.uk), that aims at answering these questions. The purpose of this thesis is to theoretically predict the possible nonlinear convective states for the first time. We will then evaluate which of these states are mostly likely to underpin the Earth’s core convection.
The student will conduct the theoretical and numerical analysis of the problem under the joint supervision of Prof. Alban Pothérat (http://users.complexity-coventry.org/~potherat/index.html) and Dr Chris Pringle. The study will seek the possible structure of convection by means of advanced stability theory and branch tracking method, to unveil the possible states. In the frame of the research program, the PhD work will be conducted in collaboration with an experimental study that will seek to reproduce and visualise these non-linear states in an experimental model of the Earth Core.

Successful candidates are expected to hold or be on course for a MSc or equivalent, in fluid mechanics or a related discipline (Physics/Mathematics), and to have demonstrated excellent abilities in mathematics and programming. Applicants having validated the theoretical part of their Masters and needing an internship to validate their Masters degree are encouraged to apply too. The student will receive a net, tax-free bursary of £15k per annum.

The successful candidate will be part the vibrant team of internationally recognised academics and PhD students forming the fluid dynamics group within the Applied Mathematics Research Centre, whose work has been ranked at 87% world-class at the UK’ latest Research Excellence Framework in 2014. This unit is part of the Flow Measurement and Fluid Mechanics Research Centre, specialises in theoretical and experimental fluid mechanics. It is especially renowned for its work on magnetohydrodynamics (MHD), turbulence, stability and geophysical flows,. The group closely collaborates with partner groups in world-leading institutions in Australia, China, France, Germany and the UK.

Informal enquiries are welcome: please forward a CV and academic records to Prof. Alban Pothérat (Coventry University, alban.potherat@coventry.ac.uk).

PDF Version: HM_1_2018_P2
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    1. Ph.D IN THEORETICAL FLUID MECHANICS ON QUASI-TWO DIMENSIONAL ATMOSPHERIC FLOWS AT COVENTRY UNIVERSITY (UK) – MONASH UNIVERSITY (AUSTRALIA)

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(from Alban Potherat, UK)

Applications are invited to apply for a PhD studentship in theoretical fluid mechanics, as part of the Applied Mathematics Research Centre (http://complexity-coventry.org/home/) at Coventry University. This PhD is to develop mathematical models for quasi-two dimensional flows in collaboration with Monash University in Melbourne, Australia (http://sheardlab.org).

Flow patterns observed in planetary atmospheres such as the hexagonal structures at Saturn’s north poles, or large patterns in the Earth’s atmosphere are so much wider (>1000 km) than they are thick (a few km) that they are almost two-dimensional (2D) objects. Even though their fine structure involves complex three-dimensional phenomena, their evolution within the global structure of the atmosphere can be expected to be reasonably well represented by 2D equations of motion. Simulating these events with 2D equation requires so much less computational power than the full 3D equations that they open such
possibilities as simulating entire planetary atmospheres in a single computation, or studying the very long-term evolution of these structures. Yet, to be physically accurate, these 2D equations still need to account for some of the 3D effects due to planetary rotation and curvature, ground friction, and other phenomena such as the transfer of heat to and within the atmosphere. The purpose of the project is to mathematically derive such 2D models from the full 3D equations and, by means of numerical simulations and stability analsysis, understand the mechanisms driving large atmospheric patterns, possibly at the scale of the entire planet. The 2D models will also be used to simulate laboratory-scale experiments where these mechanisms could be reproduced and where the
models themselves could be validated.

Successful candidates are expected to hold or be on course for a MSc or equivalent, with a grade of 70% or above, in fluid mechanics or a related discipline (Physics/ Engineering/ Mathematics), and to have demonstrated excellent abilities in mathematics and programming. Applicants having validated the theoretical part of their Masters and needing an internship to validate their Masters degree are encouraged to apply too. The student will receive a tax-free bursary of £15k per annum.

The successful candidate will be part the vibrant team of internationally recognised academics and PhD students forming the fluid dynamics group within the Applied Mathematics Research Centre, whose worked has been ranked at 87% world-class at the UK Research Excellence Framework in 2014. AMRC is especially renowned for its work on magnetohydrodynamics (MHD), turbulence, stability and geophysical flows. The group closely collaborates with partner groups in worldleading institutions in Australia, China, France, Germany and the UK. This specific project is part of a collaborative program between Coventry and Monash Universities funded by the British Royal Society, and offers the student an opportunity to travel and work in Melbourne during their PhD.

Informal enquiries are welcome: please forward a CV and academic records to Prof. Alban Pothérat (Coventry University, alban.potherat@coventry.ac.uk) or Dr. Greg Sheard, Monash University (greg.sheard@monash.edu.au). The position will be open until a suitable candidate is found.

PDF Version: HM_1_2018_P3

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    1. SCHEDULE OF CONFERENCES ON MHD AND RELATED TOPICS

—————————–

********************************************************

    1. NEXT HYDROMAG NEWSLETTER

—————————–

will be issued in the end of April, 2018. Please send
information you wish to be included into this issue to

 a.pedcenko(at)coventry.ac.uk

not later than 20 of April, 2018.

If you have an urgent announcement, we can publish at http://hydromag.eu between the
issues.

 

—–
Alex Pedcenko
Coventry University
Priory Street
Coventry CV1 5FB
United Kingdom
Tel: +44(0)24-77658974
e-mail: a.pedcenko(at)coventry.ac.uk

Hydromag Newsletter #3.1 Special Issue, 2017

Special Issue August, 2017

Content provided by our colleagues at HZDR, Dresden, Germany


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  1. LIMTECH Award Winner 2017
  2. Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies
  3. PhD position available at HZDR
  4. NEXT HYDROMAG NEWSLETTER


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  1. LIMTECH Award Winner 2017
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    The International LIMTECH Young Scientist Award 2017 for outstanding scientific contributions in the field of liquid metal technologies was awarded to

Dr. Karspars Dadzis (IKZ Berlin).

The award is funded by the Helmholtz association of German research centres and will be handed over at the Final LIMTECH Colloquium in Dresden (see below).

More details on the award can be found at: https://www.hzdr.de/db/Cms?pNid=3650

 

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  1. Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies
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    At the end of its the 5-year funding period, the HELMHOLTZ alliance LIMTECH will hold its Final Colloquium and International Symposium on Liquid Metal Technologies in Dresden on Sept. 19-20, 2017.

The agenda of the meeting and further information on the LIMTECH alliance can be found here:

https://www.hzdr.de/db/Cms?pOid=51951&pNid=3418

https://www.hzdr.de/db/Cms?pNid=2920

Anybody interested in attending the meeting is highly welcome, but is requested to register in advance. Despite the schedule of oral presentations is already fixed, additional poster presentations are welcome! Please register participation and posters by email to Gerd Mutschke <g.mutschke(at)hzdr.de> before September 1, 2017.


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  1. PhD Position available at HZDR on:Experimental investigation of turbulent convection in liquid metals

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Many turbulent flows in nature and technical applications are driven by temperature differences. The aim of this project is to investigate such a turbulent convection in a laboratory set-up using liquid metal. The goal is to reveal the structure and the dynamics of the large scale circulation as well as the dynamics near the boundary layers. Therefore, different measuring techniques as the ultrasound Doppler velocimetry and the contactless inductive flow tomography are available. The experiments are supported by high performance numerical simulations from a project partner. The combined investigation will create a new milestone in the deep understanding of turbulent convection in liquid metals and their numerous applications in geo- and astrophysics as well as technical systems.

Requirements:

  • Diploma or M.Sc in Physics, mechanical engineering or equivalent.
  • Comprehensive technical skills and physical understanding.

Tasks:

  • design of a cylindrical Rayleigh-Bénard convection cell -simultaneous measurements of velocity field, temperature field  and heat flux inside the convection
  • analysis of the three-dimensional structure and the dynamics of the  “large scale circulation”
  • comparison of the results to direct numerical simulations done by a  project partner
  • scientific publishing

 

The position is available from Oct. 1, 2017. For further information, please contact Tobias Vogt (t.vogt(at)hzdr.de) or Sven Eckert (s.eckert(at)hzdr.de)

 

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  1. NEXT HYDROMAG NEWSLETTER


—————————–

will be issued in the middle of October, 2017. Please send information you wish to be included into this issue to

                a.pedcenko(at)coventry.ac.uk

not later than 16 of October, 2016.

If you have an urgent announcement, we can publish at http://hydromag.eu between the issues.

 

—–
Alex Pedcenko
Coventry University
Priory Street
Coventry CV1 5FB
United Kingdom
Tel: +44(0)24-77658974
e-mail: a.pedcenko(at)coventry.ac.uk