Hof Group

Nonlinear Dynamics and Turbulence

Most fluid flows of practical interest are turbulent, yet our understanding of this phenomenon is very limited. The Hof group seeks to gain insight into the nature of turbulence and the dynamics of complex fluids.

Flows in oceans, around vehicles, and through pipelines are all highly turbulent. Turbulence governs friction losses and transport and mixing properties. Despite its ubiquity, insights into the nature of turbulence are very limited. To obtain a fundamental understanding of the origin and the principles underlying this phenomenon, the Hof group investigates turbulence when it first arises from smooth, laminar flow. The group combines detailed laboratory experiments with highly resolved computer simulations, and applies methods from nonlinear dynamics and statistical physics, enabling them to decipher key aspects of the transition from smooth to turbulent flow, and identify universal features shared with disordered systems in other areas of physics. Some of these insights can be used to control turbulent flow, and the group actively develops such methods. In addition, the group investigates instabilities in fluids with more complex properties, such as dense suspensions of particles, polymer solutions and blood flow.

Group Leader


On this site:


Team

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Nishchal Agrawal

PhD Student

+43 2243 9000 7624

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Nazmi Budanur

Postdoc

+43 2243 9000 2122

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Mike Hennessey-Wesen

PhD Student


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Lukasz Klotz

Postdoc

+43 2243 9000 2121

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Jose Lopez Alonso

Postdoc

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Elena Marensi

Postdoc


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Chaitanya Paranjape

Postdoc

+43 2243 9000 4747

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Michael Riedl

PhD Student

+43 2243 9000 2122

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Davide Scarselli

Postdoc

+43 2243 9000 7632


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Shayan Shamipour

PhD Student

+43 2243 9000 4781

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Sarath Suresh

PhD Student

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Balachandra Suri

Postdoc

+43 2243 9000 2083


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Atul Varshney

Postdoc

+43 2243 9000 2083

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Mukund Vasudevan

Laboratory Technician

+43 2243 9000 7624

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Yi Zhuang

Postdoc


Current Projects

Revisiting the turbulence problem using statistical mechanics | Transition from laminar to turbulent flow | Dynamics of complex fluids | Control of fully turbulent flows | Cytoplasmic streaming | Instabilities in cardiovascular flows


Publications

Yalniz G, Budanur NB. 2020. Inferring symbolic dynamics of chaotic flows from persistence. Chaos. 30(3), 033109. View

Budanur NB, Marensi E, Willis AP, Hof B. 2020. Upper edge of chaos and the energetics of transition in pipe flow. Physical Review Fluids. 5(2), 023903. View

Lopez Alonso JM, Feldmann D, Rampp M, Vela-Martín A, Shi L, Avila M. 2020. nsCouette – A high-performance code for direct numerical simulations of turbulent Taylor–Couette flow. SoftwareX. 11, 100395. View

Scarselli D. 2020. New approaches to reduce friction in turbulent pipe flow, IST Austria, 174p. View

Dos Santos Caldas PR, Lopez Pelegrin MD, Pearce DJG, Budanur NB, Brugués J, Loose M. 2019. Cooperative ordering of treadmilling filaments in cytoskeletal networks of FtsZ and its crosslinker ZapA. Nature Communications. 10, 5744. View

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Career

since 2013 Professor, IST Austria
2007 – 2013 Research Group Leader, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
2005 – 2007 Lecturer, University of Manchester, UK
2003 – 2005 Research Associate, Delft University of Technology, The Netherlands
2001 PhD, University of Manchester, UK


Selected Distinctions

2019 Simons Foundation Grant
2017 Fellow, American Physical Society (APS)
2012 ERC Consolidator Grant
2011 Dr. Meyer Struckmann Science Prize
2005 RCUK Fellowship


Additional Information

ERC Starting/Consolidator Grant website



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