Experimental investigation of a transitional boundary layer over an axisymmetric body of revolution subject to free stream turbulence (YSA)

Yaoyao Liu¹, Chong Pan^1,2

1: Fluid Mechanics Key Laboratory of Ministry of Education, Institute of Fluid Mechanics, Beihang University, Beijing 100191 China; 2: Aircraft and Propulsion Laboratory, Ningbo Institute of Technology, Beihang University, Ningbo 315100 China

Investigation of the relation between spanwise periodic structures and low-frequency breathing of a turbulent separation bubble using resolvent analysis and SPOD (YSA)

Lukas M. Fuchs¹, Jakob G.R. von Saldern¹, Ben Steinfurth², Julien Weiss², Kilian Oberleithner¹

1: Laboratory for Flow Instabilities and Dynamics, Institute of Fluid Dynamics and Technical Acoustics, Technical University Berlin; 2: Institute of Aerodynamics, Technical University Berlin

Noise sustained versus self-sustained structures in rotor-stator flow (YSA)

Artur Gesla^1,3, Laurent Martin Witkowski², Yohann Duguet³, Patrick Le Quéré³

1: Sorbonne Université, F-75005 Paris, France; 2: Universite Claude Bernard Lyon 1, CNRS, Ecole Centrale de Lyon, INSA Lyon, LMFA, UMR5509, 69622 Villeurbanne, France; 3: LISN-CNRS, Université Paris-Saclay, F-91400 Orsay, France

Constructing conditional Lyapunov functions for fluid dynamic systems

Péter Tamás Nagy

Budapest University of Technology and Economics

Contact Line Dynamics Effect on the Stability of Gravity-Driven Liquid Films with Spanwise Confinement

Hammam Mohamed, Jörn Sesterhenn

Universität Bayreuth

Discontinuous transition to shear flow turbulence

Bowen Yang¹, Yi Zhuang¹, Vasudevan Mukund¹, Elena Marensi², Björn Hof¹

1: Institute of Science and Technology Austria, Am Campus 1, 3400 Klosterneuburg, Austria; 2: Department of Mechanical Engineering, The University of Sheffield, Mappin Street, S1 3JD Sheffield, UK

Does rare, noise-induced, bypass transition in plane Couette flow bypass instantons ?

Joran Rolland

Laboratoire de Mécanique des Fluide de Lille, Ecole Centrale de Lille

Dynamics of turbulent structures in Couette-Poiseuille flow

Benoît Semin, Tao Liu, Ramiro Godoy-Diana, Jose Eduardo Wesfreid

Laboratoire PMMH, CNRS, ESPCI Paris, Université PSL, Sorbonne Université, Université Paris Cité, 7 quai saint-Bernard, 75005 Paris, France

Large Reynolds number asymptotic analysis of the pulsating planar Poiseuille flow

Gaétan Andriano^1,2, Pierre-Yves Passaggia¹, Christian Caillol¹, Pascal Higelin¹, Fabien Harambat², Sébastien Houille²

1: Univ. of Orléans, INSA-CVL, PRISME, EA 4229, 45072, Orléans, France; 2: Advanced Research Department, Technology Office, STELLANTIS, 78955, Carrières-sous-Poissy, France

Dynamical systems analysis of turbulent stripes

Dwight Barkley¹, Jonathan Billet², Santiago Benavides³, Laurette Tuckerman⁴

1: University of Warwick; 2: Ecole Normale Supérieure Paris; 3: Universidad Politécnica de Madrid; 4: CNRS, ESPCI Paris

What does the transition to turbulence in shear flows tell us about the buckling of elastic slender structures (YSA)

Tian Yang, Tobias M. Schneider

Emergent Complexity in Physical Systems Laboratory (ECPS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

Variational computation of invariant solutions in wall-bounded chaotic flows (YSA)

Omid Ashtari, Tobias M Schneider

Ecole Polytechnique Federale de Lausanne (EPFL)

Effects of heavy and light particles on Rayleigh-Benard instability

Saad Raza, Silvia C. Hirata, Enrico Calzavarini

Universit ́e de Lille, Unit ́e de M ́ecanique de Lille - J. Boussinesq, UML ULR 7512, F 59000 Lille, France

Effects of streamwise-grooved spanwise-periodic surface roughness arrays on boundary-layer instability

Jianing Zheng¹, Xuesong Wu²

1: Department of Mechanics, Tianjin University, Tianjin 300072, PR China; 2: Department of Mathematics, Imperial College London, 180 Queen’s Gate, London SW7 2AZ, UK

Evolution of a single stationary globally unstable instability in shock-wave-boundary-layer interaction at Mach 6

Ziming Song, Jiaao Hao

Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University

Excitation of low-frequency Kelvin–Helmholtz modes by modulated large-scale vortical structures on a planar mixing layer

Zhongyu Zhang¹, Xuesong Wu^2,3

1: Laboratory for High-speed Aerodynamics, School of Mechanical Engineering, Tianjin University, Nankai, Tianjin 300072, P.R. China; 2: Department of Mathematics, Imperial College London, 180 Queen’s Gate, London SW7 2AZ, U.K.; 3: School of Mechanical Engineering, Nantong University, Nantong 226019, P.R. China

Thermoelectric instability of a dielectric fluid in a Taylor-Couette system with different configurations.

Mohammed Hussein Hamede¹, Jonas Roller², Antoine Meyer³, Vincent Heuveline², Christoph Egbers¹

1: Department of Aerodynamics and Fluid Mechanics, BTU Cottbus-Senftenberg, Cottbus, (Germany); 2: Engineering Mathematics and Computing Lab, Heidelberg University, Heidelberg (Germany); 3: LOMC, UMR 6294, CNRS - Universit´e Le Havre Normandie, Le Havre (France)

Time-periodic bursting cycles on the edge to turbulence in open and closed duct flows (YSA)

Markus Scherer¹, Markus Uhlmann¹, Genta Kawahara²

1: Institute for Water and Environment, Numerical Fluid Mechanics Group, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany; 2: Graduate School of Engineering Science, Osaka University, 560-8531 Osaka, Japan

The influence of aortic wall geometry and leaflet fluttering on three-dimensional laminar-turbulent transition mechanisms past bioprosthetic aortic valves (YSA)

Karoline-Marie Bornemann, Dominik Obrist

ARTORG Center for Biomedical Engineering Research, University of Bern, Freiburgstrasse 3, 3010 Bern, Switzerland

Sonic bloom: how flowers may arise from acoustic streaming jets

Valéry Botton¹, Bjarne Vincent^1,2, Sophie Miralles¹, Abhishek Kumar², Daniel Henry¹, Alban Pothérat²

1: INSA Lyon, CNRS, Ecole Centrale de Lyon, Universite Claude Bernard Lyon 1, Laboratoire de Mécanique des Fluides et d’Acoustique, UMR5509, 69621, Villeurbanne France; 2: Fluid and Complex Systems Research Centre, Coventry University, Coventry CV15FB, UK

Exploring Non-Parallel Terms effects in Jet-Plate Interaction: Insights from Local Instability Theory and Wavepacket Analysis

Mateus Peixoto Avanci¹, Jean-Christophe Robinet¹, Peter Jordan², Jérôme Huber³, Filipe Ramos Amaral², Gregoire Pont⁴

1: Arts et Metiers Institute of Technology, DynFluid Laboratory, Paris, France; 2: Poitiers University, CNRS PPrime Institute, Poitiers, France; 3: Aeroacoustic sources, Airbus Operations SAS, Toulouse, France; 4: Modelling and Simulation, Airbus, Toulouse, France

FEM simulation of Taylor-Couette flows under dielectrophoretic force

Jonas Roller¹, Mohammed Hussein Hamede², Antoine Meyer³, Christoph Egbers², Vincent Heuveline¹

1: Engineering Mathematics and Computing Lab, Heidelberg University, Heidelberg (Germany); 2: Department of Aerodynamics and Fluid Mechanics, BTU Cottbus-Senftenberg, Cottbus (Germany); 3: LOMC, UMR 6294, CNRS - Universite Le Havre Normandie, Le Havre (France)

Ghosts underlying coherent flow structures

Tobias M Schneider¹, Zheng Zheng¹, Pierre Beck¹, Omid Ashtari¹, Jeremy P Parker²

1: Emergent Complexity in Physical Systems (ECPS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; 2: Division of Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom

Global instability of shear layers produced by surface roughness

Jonathan James Healey¹, Matthew Turner²

1: Keele University, UK; 2: University of Surrey, UK

Nonlinear dynamics of steady oblique rolls in rotating magnetoconvection (YSA)

Lekha Sharma¹, Pinaki Pal², Manojit Ghosh³

1: Department of Physics, Indian Institute of Technology, Kanpur 208016, India; 2: Department of Mathematics, National Institute of Technology, Durgapur 713209, India; 3: ‡ Engineering Mechanics Unit, Jawaharlal Nehru Centre For Advanced Scientific Research, Jakkur P.O., Bangalore 560064, India

Onset of absolute instability on a pitching airfoil using the Optimally Time-Dependent modes (YSA)

J. Simon Kern¹, Prabal S. Negi^1,2, Ardeshir Hanifi¹, Dan S. Henningson¹

1: KTH Royal Institute of Technology, Stockholm, Sweden; 2: Nordita, Stockholm University, Stockholm, Sweden

Guessing and gluing long periodic orbits in hyperchaos

Pierre Beck¹, Jeremy P. Parker², Tobias M. Schneider¹

1: École Polytechnique Fédérale de Lausanne; 2: Division of Mathematics, University of Dundee

Interface stability of flows in porous media and its applications

Thi Thai Le¹, Thorsten Koch^1,2

1: Zuse Institute Berlin; 2: Technical University Berlin

Linear and nonlinear aerodynamic Bloch waves in periodic arrays of cylinders.

Olivier Marquet

ONERA

Linear inception of patterns from turbulence in plane channel flow

Nicola Ciola^1,2, Pietro De Palma¹, Stefania Cherubini¹, Jean-Christophe Robinet², Yohann Duguet³

1: DMMM, Politecnico di Bari, Via Re David 200, 70125 Bari, Italy; 2: DynFluid, Arts et Métiers Paris /CNAM, 151 Bd de l’Hôpital, 75013 Paris, France; 3: LISN-CNRS, Université Paris-Saclay, 507 Rue du Belvédère, 91405 Orsay, France

Linear stability of a falling film down a heated moving plate

Arnab Choudhury

Indian Institute of Technology Delhi

Meshless - linear stability analysis for computations of flow instabilities in Couette flow within elliptical enclosure

Akash Unnikrishnan¹, Vinod Narayanan¹, Surya Pratap Vanka²

1: Indian Institute of Technology Gandhinagar; 2: University of Illinois at Urbana-Champaign

On the role of eddy viscosity in resolvent analysis of turbulent jets

Jakob G.R. von Saldern¹, Oliver T. Schmidt², Peter Jordan³, Kilian Oberleithner¹

1: Techische Universität Berlin; 2: University of California, San Diego; 3: CNRS / Université de Poitiers

New 3D Oblique Modes – Extension of Squire’s Theorem for Spatial Instabilities

Kilian Wilhelm¹, Martin Oberlack^1,2, Simon Görtz^1,2, Lara De Broeck^1,2, Yongqi Wang¹, Alparslan Yalcin¹, Jonathan Laux¹

1: Technische Universität Darmstadt, Chair of Fluid Dynamics, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany; 2: Technische Universität Darmstadt, Center for Computational Engineering, Dolivostraße 15, 64293 Darmstadt, Germany

DNS of K-type transition in a flat-plate boundary layer with supercritical fluid (YSA)

Pietro Carlo Boldini¹, Benjamin Bugeat², Jurriaan Peeters¹, Markus Kloker³, Rene Pecnik¹

1: Delft University of Technology; 2: University of Leicester; 3: University of Stuttgart

Noise-induced transitions after a steady symmetry-breaking bifurcation: the case of the sudden expansion

Yves-Marie Ducimetière, Edouard Boujo, Francois Gallaire

Laboratory of Fluid Mechanics and Instabilities, ́Ecole Polytechnique F ́ed ́erale de Lausanne, Lausanne CH-1015, Switzerland

Numerical investigation of Richtmyer-Meshkov instability in shocked fluid layer with particles

LINFEI LI¹, TAI JIN², LIYONG ZOU³, KUN LUO¹, JIANREN FAN¹

1: State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, People’s Republic of China; 2: School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, People’s Republic of China; 3: Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900,People’s Republic of China

Numerical Study of Slip Effects on Supersonic Boundary-Layer Receptivity to Freestream Acoustic Disturbances

Chenyue Wang, Jihui Ou, Jie Chen

Tianjin University

On linear stability of planar compression ramp flows

Vassilis Theofilis¹, Nicolas Cerulus², Ricardo Santos³, Helio Quintanilha Jr⁴, Leonardo SB Alves³

1: Technion - Israel Institute of Technology; 2: University of Liverpool, UK; 3: Universidade Federal Fluminense, Brazil; 4: Deloitte Berlin, Germany

Onset of Turbulence in Pulsatile Pipe Flow with a Physiological Waveform

Bastian Bäuerlein^1,2,3, Larissa Richter^1,2,3, Daniel Morón³, Marc Avila³, Kerstin Avila^1,2,3

1: Institute of Physics, University of Oldenburg, Ammerländer Heerstrasse. 114-118, 26129 Oldenburg, Germany; 2: ForWind - Center for Wind Energy Research, Küpkersweg 70, 26129 Oldenburg, Germany; 3: Center of Applied Space Technology and Microgravity (ZARM), University of Bremen, Am Fallturm 2, 28359 Bremen, Germany

Prediction of linear spatial non-modal growth with bi-orthogonal local analysis

Duncan Marius Ohno, Michael Karp

Technion – Israel Institute of Technology

Primary Instability in the Wake of Polygonal Cylinders

Adam Marshall, Lian Gan, David Sims-Williams

Durham University

Proliferation of localized turbulence in pipe flow

Anton Svirsky¹, Tobias Grafke², Anna Frishman¹

1: Technion Israel Institute of Technology, 32000 Haifa, Israel; 2: University of Warwick, Coventry CV4 7AL, United Kingdom

Numerical study on the nonwetting ability of trapezoid topography

Zhicheng YUAN¹, Jingjing LIU², Yong WANG²

1: Tongji university; 2: Shangqiu Polytechnic

On acoustic wave propagation in bubbly gelatin

Mingyuan Nie, Fabian Reuter, Saber Izak Ghasemian, Yuzhe Fan, Claus-Dieter Ohl

Department Soft Matter, Institute for Physics (IfP), Faculty of Natural Sciences (FNW), Otto-von-Guericke-Universit ̈at Magdeburg, Germany

Path of a deformable bubble rising near a vertical wall: highly inertial regimes

Pengyu Shi¹, Jie Zhang², Jacques Magnaudet¹

1: Université de Toulouse; INPT, UPS; IMFT (Institut de Mécanique des Fluides de Toulouse), F-31400 Toulouse, France; 2: State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, 710049 Xi’an, China

Coalescence-driven detachment of sub-millimeter bubbles on solid surfaces – a numerical study

Michele Cattani, Ehsan Mahravan, Pourya Forooghi

Department of Mechanical and Production Engineering, Aarhus University, 8000 Aarhus C, Denmark

Rayleigh-Plateau instability driven by thermal fluctuations and the effect of surfactants

Luís H. Carnevale¹, Piotr Deuar¹, Zhizhao Che², Panagiotis E. Theodorakis¹

1: Institute of Physics, Polish Academy of Sciences, Warsaw, Poland; 2: State Key Laboratory of Engines, Tianjin University, Tianjin, China

Role of bulk viscosity on Richtmyear-Meshkov instability induced by polygonal interfaces

Satyvir Singh, Manuel Torrilhon

Applied and Computational Mathematics (ACoM), RWTH Aachen University, Germany

Secondary instability of supersonic Gortler vortices excited by free-stream vortical disturbances

Dongdong Xu, Pierre Ricco

The University of Sheffield

Sensitivity of flows over three-dimensional swept wings at low Reynolds number

Anton Burtsev¹, Vojtech Pezlar², Vassilios Theofilis³

1: University of Texas at Austin; 2: Czech Technical University in Prague; 3: Technion - Israel Institute of Technology

Shear Instabilities Triggered by Autocatalytic Fronts Travelling in Viscosity Stratified Channel Flows

Surya Narayan Maharana¹, Manoranjan Mishra², Laurence Rongy¹, Anne De Wit¹

1: Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP 231, 1050 Brussels, Belgium; 2: Indian Institute of Technology Ropar, Department of Mathematics, 140001 Punjab, India

Stability and dynamics of the laminar flow past 3D rectangular prisms

Edouard Boujo¹, Alessandro Chiarini²

1: Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland; 2: Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan

Stability of ablation flows in inertial-confinement fusion : Receptivity

Jean-Gabriel Thiriet^1,2, Jean-Marie Clarisse¹, Arnaud Couairon²

1: CEA,DAM, DIF, F-91297 Arpajon, France; 2: CPHT, CNRS, École Polytechnique, Institut Polytechnique de Paris, F-91128 Palaiseau, France

The viscoelastic flow around a confined cylinder: 3D linear stability analysis and transient simulations

John Tsamopoulos, Alexandros Spyridakis, Pantelis Moschopoulos, Yannis Dimakopoulos

University of Patras

Stabilization mechanisms of various methods on the traveling crossflow instability in hypersonic boundary-layer flows

Jiachen Lu¹, Rui Zhao², Ken Chun Kit Uy¹, Chihyung Wen¹

1: Department of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China; 2: School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Statistics of the lifetime of localized turbulence in channel flow

Baofang Song

Peking University

Subcritical instability of a premixed V-flame

Lutz Lesshafft¹, Chuhan Wang², Christopher M. Douglas³, Guan Yu⁴

1: LadHyX, CNRS, École Polytechnique, Institut Polytechnique de Paris; 2: Tsinghua University; 3: Duke University; 4: The Hong Kong Polytechnic University

Subcritical transition in Blasius boundary layer investigated using Optimally time-dependent modes

Yohann Duguet¹, Miguel Beneitez², Philipp Schlatter³, Dan S. Henningson⁴

1: LISN-CNRS, Université Paris-Saclay; 2: DAMTP Cambridge; 3: FAU Erlangen-Nürberg; 4: KTH Stockholm

The Effect of Distributed Roughness on the Transitional Separated Flow over a Flat Plate

Zifei Yin, Haocheng Wu

Shanghai Jiao Tong University

The interscale behaviour of uncertainty in three-dimensional Navier-Stokes turbulence

Jin GE, Joran Rolland, John-Christos Vassilicos

Univ. Lille, CNRS, ONERA, Arts et Métiers ParisTech, Centrale Lille, UMR 9014 - LMFL - Laboratoire de Mécanique des Fluides de Lille - Kampé de Feriet, F-59000 Lille, France

The memory of Rayleigh-Taylor turbulence

Sébastien Thevenin^1,2, Benoît-Joseph Gréa^1,2, Gilles Kluth^1,2, Balu Nadiga³

1: CEA, DAM, DIF, F-91297 Arpajon, France; 2: Université Paris-Saclay, CEA, Laboratoire Matière en Condition Extrême, 91680 Bruyères-le-Châtel, France; 3: Los Alamos National Laboratory, Los Alamos, NM, USA

The minimal seed for transition to convective turbulence in heated pipe flow

Shijun Chu¹, Ashley Willis¹, Elena Marensi²

1: School of Mathematics and Statistics, University of Sheffield, Sheffield S3 7RH, U; 2: Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD, UK

Confinement effect on air-bubble plumes in quiescent water under the jetting regime

Marie-Charlotte RENOULT, Rafael Alejandro HERRERA-LECLERC, Florian LESPINASSE, Jean-Bernard BLAISOT

INSA Rouen Normandie, Univ Rouen Normandie, CNRS, Normandie Univ, CORIA UMR 6614, F-76000 Rouen, France

Droplet impact dynamics: efficient modelling with depth-averaged form

Sergii Veremieiev

Department of Engineering, Durham University, Durham, DH1 3LE, UK

Experimental bifurcation analysis of a deformable bubble using control-based continuation.

Sammy Ayoubi¹, Joao Fontana¹, Anne Juel², Alice Thompson¹

1: Department of Mathematics, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK; 2: Department of Physics and Astronomy, School of Natural Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, UK

Towards a new closure model for linearized mean field analysis inspired by inherent Lie symmetries of the system

Sophie Julie Knechtel, Kilian Oberleithner

TU Berlin

Towards a novel transient-growth based statistical stability criterion for channel flow

Dario Simon Klingenberg^1,2

1: DAMTP, University of Cambridge; 2: ZARM, Universität Bremen

Transition in pipe flow in the presence of body forces

Björn Hof, Bowen Yang

IST Austria

Turbulent bands and stripes formation mechanisms in planar shear flows

Roger Ayats, Björn Hof

Institute of Science and Technology Austria (ISTA)

Turbulent transition of shear-thinning pipe flow

Baoying Wang, Björn Hof

Institute of Science and Technology Austria

Using periodic orbits to quantitatively describe three-dimensional transitional turbulent thermal convection

Zheng Zheng¹, Laurette Tuckerman², Tobias Schneider¹

1: Emergent Complexity in Physical Systems Laboratory (ECPS), Ecole Polytechnique Fédérale de Lausanne, CH 1015 Lausanne, Switzerland; 2: Physique et Mécanique des Milieux Hétérogènes (PMMH), CNRS, ESPCI Paris, PSL University, Sorbonne Université, Université de Paris, 75005 Paris, France

Weakly nonlinear study of a spontaneous symmetry breaking in a triple inlet channel.

Robin Debuysschère¹, Timothée Salamon², François Gallaire², Benoît Scheid¹

1: ULB, TIP lab; 2: EPFL, LFMI

Can topology help us enumerating all UPOs of a chaotic PDE?

Marie Abadie¹, Pierre Beck², Jeremy P. Parker³, Tobias M. Schneider²

1: University of Luxembourg, Department of Mathematics; 2: EPFL, Emergent Complexity in Physical Systems Laboratory; 3: University of Dundee, Division of Mathematics