Anthony Rouquier sucessfully defended his thesis entitled "Stability of particulate pipe flows", subject to minor corrections. Congrats Anthony !
"From three-dimensional to quasi-two-dimensional: Linear transient growth in MHD duct flows" by O. Cassels, T. Vo, A. Pothérat and G. Sheard Accepted for publication in Journal of Fluid Mechanics.
"Inverse and Direct Energy cascades in 3D MHD Turbulence at low Rm" by N. Baker, A. Pothérat, L. Davoust and F. Debray Accepted for publication in Physical Review Letters.
Kélig Aujogue held a lecture at the Royal Atrononmical Society's regular meeting on the 9th of March to celebrate the receipt of his 2016 Patricia Tomkins Prize. A video of the lecture can be found online here.
"Experiment on Convection in a Tangent Cylinder" by K. Aujogue, A. Pothérat, B. Sreenivasan and F. Debray, accepted for publication in Journal of Fluid Mechanics, doi:10.1017/jfm.2018.77.
The Leverhulme Trust awarded Coventry University a Research Project Grant for a 3-year project led by A. Pothérat and C. Pringle to study the non-linear states of magnetoconvection in the Earth core. The grant covers both theoretical and experimental aspects of the problem with funding for a 3-year PhD and a 2-year Research Associate.
Our group welcomes Dr Abhishek Kumar who joins us from IIT Kanpur. Abhishek will numerically study thermal and hydrodynamic instabilities in confined flows with a free surface.
From October, the 1st, A. Pothérat will act as Associate Editor in charge of fluid dynamics submissions for Royal Society Open Science. RSOS is the Royal Society's Open Access Journal. It is multidisciplinary and has the specificity of encouraging the publication of negative results.
A snapshot of the flow in a 180 degrees sharp bend taken from the our paper "Linear stability of confined flow around a 180 sharp bend" by A. Sapardi, W. Hussam, A. Pothérat and G. Sheard, is on the Cover of issue 822 (July 2017) of the Journal of Fluid Mechanics.
"Do magnetic fields enhance turbulence at low magnetic Reynolds numbers ?" by A. Pothérat, and R. Klein, accepted for publication in Physical Review Fluids, doi:10.1103/PhysRevFluids.2.063702.
Kélig won the 2016 Patricia Tomkins prize awarded by the Royal Astronomical Society for the best thesis in the UK in the field of Astrophysical or Geophysical instrumentation. Congratulations for this extraordinary achievement !
"Controlling the dimensionality of low Rm MHD turbulence experimentally" by N.Baker, A. Pothérat, Laurent Davoust and Francois Debray, accepted for publication in Experiments in Fluids doi:10.1007/s00348-017-2363-5.
Our group welcomes Shashank Gupka who is starting a PhD funded by an "Emergence" grant from the University Grenoble-Alpes to experimentally study propagative phenomena in low Rm flows and MHD turbulence.
"Linear stability of confined flow around a 180 sharp bend" by A. Sapardi, W. Hussam, A. Pothérat and Sheard, G accepted for publication in the Journal of Fluid Mechanics. doi:10.1017/jfm.2017.266
Nathaniel Baker successfully defended his PhD entitled "The dynamics of partly 2D/partly 3D turbulence: an experimental and theoretical study in the Low-Rm MHD framework". Our warmest congratulations to him !
"Linear stability of horizontal, laminar fully developed, quasi-two-dimensional liquid metal duct flow under a transverse magnetic field and heated from below" by T. Vo, G. Sheard and A. Pothérat accepted for publication in Physical Review Fluids, doi:10.1103/PhysRevFluids.2.033902.
We welcome Dr Brahim Moudjed, who joins our team to work on the transition to turbulence in MHD Couette flows for two years.
Kélig Aujogue successfully defended his PhD entitled "Little Earth Experiment: a journey toward the Earth tangent cylinder". Our warmest congratulations to him !
The famous MIT technology review published an article entitled "How Geophysicists built a scaled model of Earth's core out of a sulfuric acid" (here), following our paper in Review of Scientific Instruments, doi:10.1063/1.4960124
"Little Earth Experiment: a device to model planetary cores" by K. Aujogue, A. Pothérat, Ian Bates, Francois Debray and B. Sreenivasan, accepted for publication in Review of Scientific Instruments, doi:10.1063/1.4960124.
Our group welcomes Sanjay Singh who is starting a 4 year PhD funded by the National Engineering Laboratory to experimentally study the transition to turbulence in particulate pipe flows.
Together with Laurent Davoust (Grenoble-INP) and Francois Debray (LNCMI/CNRS) I have been awarded a grant under the competitive "Emergence" scheme from Universite Grenoble-Alpes, to support experimental research on turbulence in extreme magnetic fields. The funding covers a PhD studentship for 3 years with equipment and travel.
I will hold Coventry University's Christmas lecture on December the 2nd on the theme "The Jeckyll and Hyde story of Turbulence". Places can be booked by email.
The announcement was made on the occasion of the 8th conference on Electomagnetic Processing of Materials held in Cannes, October 12th to 16th, by Dr Gunter Gerbeth, current Chairman of Hydromag. Hydromag is best known for its newsletters diffused to the international community of researchers working in the fields of Electromagnetic Processing and Magnetohydrodynamics.
Onset of plane magnetoconvection at low Ekman number by K. Aujogue, A. Pothérat and B. Sreenivasan, accepted for publication in Physics of Fluids. doi:10.1063/1.4934532
Our paper on the spatial evolution of quasi-2D vortex streets in MHD duct flows has been selected from recently
published Physics of Fluids papers for having made timely and diverse contributions to
the journal, for the second time this year.
PoF Research Highlights
pdf
The decay of wall-bounded MHD turbulence at Low-Rm by A. Pothérat and K. Kornet, accepted for publication in Journal of Fluid Mechanics. doi:10.1017/jfm.2015.572
Dimensionality, Secondary flows and Helicity in Low-Rm MHD vortices by N. Baker, A. Pothérat and L. Davoust, accepted for publication in Journal of Fluid Mechanics. doi.org/10.1017/jfm.2015.420
Our joint work with Collaborators from Monash University on the spatial evolution of quasi-2D vortex streets
in MHD duct flows is amongst papers selected from recently published Physics of Fluids papers for having
made timely and diverse contributions to the journal.
PoF Research Highlights
pdf
"A Method for Spectral DNS of Low-Rm MHD Channel flows based on the least dissipative modes" by K. Kornet and A. Pothérat accepted for publication in Journal of Computational Physics. doi:10.1016/j.jcp.2015.05.018
the Little Earth Experiment (LEE) was operated for the first time in a high magnetic field at CNRS Grenoble. During the coming year, LEE will explore the details of magnetoconvective patterns taking place in the core of the Earth, to understand how they determine the behaviour of the magnetic field our planet.
"Spatial evolution of a quasi-two-dimensional Karman vortex street subjected to a strong uniform magnetic field" by A. H. A. Hamid, W.K. Hussam, A. Pothérat and G.J. Sheard accepted for publication in Physics of fluids. pdf
Jon Brons starts a PhD in experimental fluid mechanics on the dimensionality of turbulence under the effect of background rotation. He will be supervised by Profs. Peter Thomas (University of Warwick) and Alban Pothérat. His work will be conducted on Warwick University's large rotating table to elucidate how rotating turbulence switches between two- and three-dimensional states.
Coventry University awarded us one of two equipment grants worth £50,000 to upgrade the FLOWCUBE facility. These funds will, in particular, finance the purchase of a multichannel Ultrasound Velocimeter to measure velocity increments along several directions simultaneously in turbulent liquid metals.
"Bounds on the attractor dimension for low-Rm magnetohydrodynamic channel flow with parallel magnetic field" by Rob Low and A Pothérat accepted for publication in the Physical Review E.
Anthony Rouquier starts a PhD in theoretical/numerical fluid mechanics on the transition to turbulence in particulate pipe flows, supervised by Chris Pringle and Alban Pothérat. His work will be sponsored for 4 years by the National Engineering Laboratory.
I am awarded the Wolfson Research Merit Award by the Royal Society. Jointly funded by the Wolfson Foundation and the Department for Business, Innovation and Skills (BIS), the scheme aims to provide universities with additional support to enable them to attract science talent from overseas and retain respected UK scientists of outstanding achievement and potential.
"Why, how and when MHD turbulence at low Rm becomes three-dimensional" by A. Potherat and R. Klein accepted for publication in the Journal of Fluid Mechanics
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