News

The paper ‘Bifurcation Dynamics of a Particle-Encapsulating Droplet in Shear Flow’ by Lailai Zhu and François Gallaire has been published in Physical Review Letters. The research numerically investigates the dynamics of a model system (in creeping flow) mimicking nucleated cells and double-emulsions, etc.

Watch Assoc. Prof. Philipp Schlatter’s interview at The Platform for Advanced Scientific Computing (PASC) conference.

Assoc. Prof. Mihai Mihaescu has been elected as Associate Editor for a new ASME Journal: ASME Journal of Engineering and Science in Medical Diagnostics and Therapy.

FLOW PhD student Jacopo Canton won the "GKN aerospace award in mechanics" at the 25th Svenska Mekanikdagarna in the historical university town of Uppsala.

The Swedish technical newspaper, NyTeknik, has dedicated an article to the research of Docent Christophe Duwig. The topic is new technologies for harvesting waste heat and pressure in a Fuel Cell based power-train. The academic focus is on complex thermodynamic effects in fluid flows with expansion.

The paper ‘Ultrastrong and Bioactive Nanostructured Bio-Based Composites’ by Nitesh Mittal, Ronnie Jansson, Mona Widhe, Tobias Benselfelt, Karl Håkansson, Fredrik Lundell, My Hedhammar and Daniel Söderberg has been published in ACS Nano, the second highest ranked journal in the area of Nanotechnology and top ten in the area of Material Science. The research is a collaboration between scientists from Linné FLOW Centre, Wallenberg Wood Science Center, the School of Biotechnology at KTH and RISE (Research Institutes of Sweden).

Our colleagues Prof. Alfredsson and Dr. Segalini have edited a theme issue of prestigious Philosophical Transactions of the Royal Society A on 'Wind Farms in Complex Terrain'.

A consortium with PI Tino Weinkauf (KTH CSC) and co-applicants Ingrid Hotz (Linköping University), Erwin Laure (KTH), Rodrigo Caballero and Gunilla Svensson (MISU) and FLOW reseracher Philipp Schlatter have been awarded a grant of 26Mkr for 5 years by SSF (Stiftelsen för Strategisk Forskning) as part of their call for "Big data and computational science".

FLOW researchers in collaborations with colleagues at SeRC (Swedish e-SCience Research Centre) and WWSC (Wallenberg Wood Science Centre) have been awarded 24 MSek from the Swedish Research Council to build a new multidisciplinary research environment.

The paper 'Electrostatic cloaking of surface structure for dynamic wetting’ by Satoshi Nita, Minh Do-Quang, Jiayu Wang, Yu-Chung Chen, Yuji Suzuki, Gustav Amberg and Junichiro Shiomi has been published in prestigious Science Advances. The research is a collaboration between scientists from Linné FLOW Centre, University of Tokyo and Japan Science and Technology Agency.

Prof. Alessandro Talamelli has been elected as Editor of Experimental Thermal and Fluid Science.

In April, Prof. Rebecca Lingwood will be joining the Editorial Board of the prestigious Philosophical Transactions A.

Dr. Philipp Schlatter has been included in the Editorial Board of the International Journal of Heat and Fluid Flow. This journal, published by Elsevier, publishes research that primarily expands upon the interplay between fluid dynamic processes and convective heat transfer through the use of experiments and/or computer simulations.

Dr. Tomas Rosén’s studies into the dynamics of cellulose nanofibrils secured him this year’s Alf de Ruvo scholarship; established in memory of SCA employee Alf de Ruvo. His findings offer the potential to develop new ways of making cellulose materials that could, one day, replace fossil based material.

FLOW researchers Nitesh Mittal, Ayaka Kamada, Daniel Söderberg and Fredrik Lundell together with additional colleagues in a Swedish-German team of researchers has cleared up a key process for the artificial production of silk (pure protein filaments).

 

Our FLOW colleague Shervin Bagheri has been chosen as one of 20 future research leaders by the Foundation of Strategic Research (SSF).

 

Wallenberg Academy Fellows is a carreer programme that provides long-term funding for the most promising young researchers of all disciplines to develop their projects.

 

Romain Gojon's supersonic impinging jet simulation is featured on the front-page of JFM..

 

Shervin Bagheri received the prize of The best teaching effort at the Aeronautical and Vehicle Engineering program at KTH in 2016.

 

The program Swedish Endowed Professor Chair at ITA in the Honor of Peter Wallenberg Sr., which instituted Chairs at Aeronautics Institute of Technology (ITA) so that Swedish professors cooperated with Brazil, now proceeds with the addition of Prof Dan Henningson from KTH. Previously Prof Petter Krus from LiU has been appointed and Prof Tomas Grönstedt from Chalmers will follow.

 

Our FLOW colleague Assoc. Prof. Sara Zahedi won one of the ten Prizes of the European Mathematical Society (EMS) for young researchers. The prize was awarded to Sara at the 7th European Congress of Mathematics held in Berlin, July 18-22, 2016.

 

The paper Flow structures around a high-speed train extracted using Proper Orthogonal Decomposition and Dynamic Mode Decomposition (Computers and Fluids, Volume 57, Issue , March 2012, Pages 87-97) by FLOW researchers Tomas W. Muld, Gunilla Efraimsson and Dan S. Henningson is now on the list of most cited papers since 2011 in Computers and Fluids.

 

Our FLOW colleague Prof. Dan Henningson has received a prestigious ERC Advanced Grant of about 2,0M€.

 

Daniel Söderberg has received the Ekman medal from SPCI (Svenska Pappers- och Cellulosaingengörsföreningen).

 

Raphael Ebenhoch,  who did his M.Sc. thesis at the Fluid Physics Laboratory, KTH Mechanics has been awarded second place and 10 kSEK in the Vattenfall Energy Award 2015 competition.

 

New Centre for Sustainable Aviation has been created at KTH -SCI, with Prof. Mats Åbom as director.

Associate Professor Fredrik Lundell, a lecturer at the department of Mechanics, has been awarded a prize from Lars-Erik Thunholm's Foundation for the Promotion of Scientific Research.

FLOW graduate student Iman Lashgari has been awarded the Euromech Young Scientists Prize at ETC15 which was held in Delft, August 25-28, 2015.

 

The paper 'Non-Newtonian perspectives on pulsatile blood-analog flows in a 180° curved artery model’ by S. van Wyk, L. Prahl Wittberg, K. V. Bulusu, L. Fuchs, and M. W. Plesniak has been publisehd as Featured Article in Physics of Fluids.

 

Vineeth Nair, FLOW post-doctoral fellow at the Aeronautical and Vehicle Engineering department has been short-listed for the Innovative Student Projects Award  by  the Indian National Academy of Engineering (INAE).

 

Fredrik Lundell guest at Swedish Radio program 'Morgonpasset'.

 

Shervin Bagheri has received the big Göran Gustafsson prize of 2.5 million SEK.

Prof. Lingwood has recently been elected a Fellow of the Royal Aeronautical Society and will move to Queen Mary University of London, as QMUL’s Vice-Principal

On March 14 the CICLoPE (Centre for International Cooperation in Long Pipe Experiments) was officially opened. The inauguration event attracted attention of the Italian TV, which reported the event in the program Leonardo.

 

Prof. Dan Henningson, Director of Swedish e-Science Researc Centre (SeRC) interviewd in Swedish news papers.

 

The article 'Turbulent channel ow of dense suspensions of neutrally buoyant spheres' by F. Picano, W.-P. Breugem and L. Brandt has been featured in a Focus on Fluids paper in J. of Fluid Mechanics.

Prof. G. Efraimsson KTH Focal Point for Airbus Group University Partner Programme.

Our colleague Fredrik Lundell has started blogging in Curie, a webb newspaper published by the Swedish Research Council (VR).

Our colleague Prof. Gustav Amberg has been appointed as one of ten Editors of Microfluidics and Nanofluidics which is published by Springer.

The article 'Drop deformation and breakup’ by T. Kékesi, G. Amberg and L. Prahl Wittberg is the 4th most downloaded paper from International Journal of Multiphase Flow.

The Royal Swedish Academy of Engineering Sciences (IVA) at its recent gathering elected seven new members among them our colleague Prof. Henrik Alfredsson.

A large number of FLOW researchers have received funding from Swedish Research Council(VR).

This year's final of da Vinci competition was hold on October 15 at CORIA, Rouen, France. Lailai Zhu was among the five finalists who presented their research to the jury in last round of the competition.

FLOW researchers have proposed an advance in cell sorting technology that could lead to lower costs, increased accuracy and quicker analysis of biomarkers for such illnesses as cancer and malaria.

KTH and collaborators investing 170 million SEK in a new computer which will be the fastest supercomputer in Sweden.

Our colleagues have tested the new World Cup match ball. Listen to their conclusions on Swedish Radio P4.

Hydrodynamic alignment and assembly of nanofibrils resulting in strong cellulose filaments
Nature Communications 5:4018
Karl M. O. Håkansson, Andreas Fall, Fredrik Lundell, Shun Yu, Christina Krywka, Stephan V. Roth, Gonzalo Santoro, Mathias Kvick, Lisa Prahl-Wittberg, Lars Wågberg & L. Daniel Söderberg

Researchers at Linné FLOW Centre at KTH Royal Institute of Technology are notching up further successes and have recently received a number of prestigious grants. One of the goals is to be first in the world performing direct numerical simulation of  the complex air currents surrounding an entire aircraft wing.

Recurrent Bursts via Linear Processes in Turbulent Environments
Phys. Rev. Lett. 112, 144502 (2014)
Geert Brethouwer,Philipp Schlatter,Yohann Duguet, Dan S. Henningson and Arne V. Johansson

After four decades at KTH, physics professor Henrik Alfredsson goes to Scania to work with engineers in the workshop. The goal of this project is to build a long-term research collaboration on energy-efficient engines.

Prof. Jens Fransson and his colleagues has received a grant for Odqvist laboratory for experimental MUlti-SCaLE mechanics – MUSCLE.

In the new KTH & Co IMPACT magazine, FLOW research is featured as one of about 20 cases where KTH describes is best research that has a clear societal impact.

The research project, named TRITOS: TRansItions and Turbulence Of complex Suspensions, is devoted to the study of semi-dilute and dense suspensions of rigid and deformable particles in inertial flows.

The presentation “Bridging Chemical Dosage, Mixing Quality and Variability in Paper Sheets” by Paul Krochak, Bo Norman, Giuseppe Carmine Fasci, and Lisa Prahl Wittberg, was named the winner of the Jasper Mardon Memorial Prize recognizing the Best Papermaking Technology Paper presented at PaperCon 2013.

Prof. Henrik Alfredsson has been elected as member of editorial board for Philosophical Transactions A of the Royal Society for a three-years period (2014-2016).

See Fredrik Lundell explaining physics of vortices in the popular TV program 'Hjärnkontoret':
http://www.svt.se/barnkanalen/hjarnkontoret/se-program/12-11-18-45 (from the 14th minute).

Wallenberg Academy Fellows, the career programme for young researchers launched by the Knut and Alice Wallenberg Foundation in 2012, provides long-term funding for young, promising Swedish and foreign researchers from all academic fields.
CICLoPE (Centre for International Cooperation in Long Pipe Experiments) is an international cooperation between several research institutions intended to conceive new infrastructures for the study of high-Reynolds number turbulence. The first of these infrastructures is the Long Pipe, which is basically a large-scale wind-tunnel designed to generate a naturally developed turbulent pipe flow that allows fully-resolved measurement of wall-turbulence at high-Reynolds number.

The Council of the American Physical Society at its September 2013 meeting acted favorbaly on Prof. Johansson's nomination for Fellowship in the Society upon the recommendation of the the Division of Fluid Dynamics.

Shear Thickening in Non-Brownian Suspensions: An Excluded Volume Effect
Phys. Rev. Lett. 111, 098302 (2013)
Francesco Picano, Wim-Paul Breugem, Dhrubaditya Mitra, and Luca Brandt

Turbulent boundary layers over flat plates and rotating disks—The legacy of von Kármán: A Stockholm perspective
July–August 2013
P.H. Alfredsson | S. Imayama | R.J. Lingwood | R. Örlü | A. Segalini

Mats Åbom has been elected as vice-president in the European Acoustics Association (EAA) and will among other things be responsible from the European side for organising the joint European and American Acoustical Society conference in Boston 2017. For more info see here.

At a ceremony at the Royal Castle on February 7 the King handed out the King's medal of 8th size in the band of 'Serafimerorden' to Arne Johansson. Also the queen was present and handed out the diploma.

The Seraphim Medal (1748) is presented for outstanding services of a humanitarian nature or of general benefit to society.

The motivation read: 'For significant contributions to the Swedish scientific research and the Swedish academia.'

The paper 'Oblique Laminar-turbulent Interfaces in Plane Shear Flows' by Duguet & Schlatter, has been published in  Physical Review Letters (link).

Abstract:

Numerical prediction of flows, including prediction of weather is increasingly important. At the ECMWF where our former board member Erland Källén is research director they were, due to their advanced model, able to make early predictions of the storm Sandy. It is an example of the social and economic importance of our applications within FLOW.

http://www.usatoday.com/story/opinion/2012/10/30/sandy-forecasting-ecmwf-gfs/1670035/

The paper 'Spontaneous symmetry breaking of a hinged flapping filament generates lift' by Bagheri, Mazzino & Bottaro, has been published in  Physical Review Letters (link).

The Council of the American Physical Society at its September 2012 meeting acted favorbaly on Prof. Alfredsson's nomination for Fellowship in the Society upon the recommendation of the the Division of Fluid Dynamics.

"For the development of innovative, creative and rigorous experimental methods leading to seminal contributions to our understanding of instabilities, transitional and turbulent flows."

The Council of the American Physical Society at its September 2012 meeting acted favorbaly on Prof. Henningson's nomination for Fellowship in the Society upon the recommendation of the the Division of Fluid Dynamics.

The article Assessment of direct numerical simulation data of turbulent boundary layers by P. Schlatter & R. Örlü has been ranked as the third most-downloaded JFM paper all time (up to August 2012).  


See the whole list here.

 

Revival of classical vortex generators now for transition delay
Shahab Shahinfar, Sohrab S. Sattarzadeh, Jens H. M. Fransson, and Alessandro Talamelli (link)

Lundell
The Åforsk price for eminent contributions to engineering education 2012 has been awarded to Fredrik Lundell.

More info (in Swedish) is found here.

Former FLOW researcher Takahiro TSUKAHARA has received a Young Scientist Award from JSME (the Japan Society of Mechanical Engineers). The award is given for his work on the rotating plane Couette flow at Department of Mechanics.

The paper 'Self-sustained localized structures in a boundary-layer flow' by Y. Duguet, P. Schlatter, D.S. Henningson and B. Eckhardt, has been published in  Physical Review Letters (link).

Abstract:

The paper 'A new way to describe the transition characteristics of a rotating-disk boundary-layer flow' by Shintaro Imayama, P. Henrik Alfredsson, and R. J. Lingwood has been the 2nd most downloaded Physics of Fluids paper during March 2012 (link).

Abstract:

During the latest FLOW board meeting held on March 26, it was decided to fund the following PhD projects through FLOW core funding:

  • Acoustic particle separation and sorting in gases (Etienne Robert),
  • Modeling the interaction of viscous fluids and elastic structures (Shervin Bagheri & Anna-Karin Tornberg).

These projects were chosen among 8 proposals of high scientific quality.

The Swedish Research Council are presently carrying out the midterm evaluation of the first 20 Linné centres, of which FLOW is one. On February 7 we had a visit by the expert panel for engineering sciences complemented by one "generalist", Neil Geddes (from the e-science area). The expert panel consisted of Prof H. Salemink, TU Delft (chairman), Prof. S. Bader, Argonne National Lab. USA, Prof. T. Basar, Univ. of Illinois, Prof. M. Miles, Univ. of Bristol and Prof. N. Adams, TU München (fluid dynamics expert).

The FLOW graduate school together with the Centre for Academic English at Stockholm University organizes a workshop on "Writing for International Publication". Details about the course content are found in here.

The workshop will take place outside Stockholm, Skepparholmen on April 16-17, lunch to lunch.

Jenny Brandefeldt who now has a research associate position at FLOW (at the department of mechanics) has accepted an offer from SKB (Swedish Nuclear Fuel and Waste Management Company) for a permanent position there. We congratulate Jenny to this prestigious offer. Jenny will keep the contact with the department and from January 1, she will be here 20 % of full time to continue the supervision of Marit Berger and and other duties. We also hope that this will mean new possibilities for increased contacts and research collaboration with SKB.

Andreas Vallgren, Enrico Deusebio and Erik Lindborg hypothesize that the observed wave number spectra of kinetic and potential energy in the atmosphere can be explained by assuming that there are two related cascade processes emanating from the same large-scale energy source, a downscale cascade of potential enstrophy, giving rise to the k-3 spectrum at synoptic scales and a downscale energy cascade giving rise to the k-5/3 spectrum at mesoscales.

Fredrik Lundell, associate professor at KTH Mechanics, has been awarded the annual "Teacher of the year" award at KTH. In particular, he gets the price for his efforts of implementing peer instruction in basic courses at KTH. The price is awarded in the City Hall December 14 and consists of a diploma and a scholarship of 25 000 SEK. The full motivation (in Swedish) is found here

At the Annual formal gathering of the Royal Swedish Academy of Sciences (KVA), in presence of the king, one of FLOW's researchers, Anna-Karin Tornberg, received the diploma as a newly elected member of the KVA. She is now the youngest member of the academy. In addition, Anna-Karin is the first woman ever that has been elected to the mathematics class in KVA.

For the first time we have found the optimal route to turbulence, and the localized disturbance to a laminar flow that takes that route. We have used optimal control theory to optimize the route to the statistically steady turbulent state characterized by the largest entropy production.

Nonequilibrium Thermodynamics and the Optimal Path to Turbulence in Shear Flows