Evolution mechanisms of synthetic streamwise vortices in turbulent boundary layers (YSA)

Weiqi Sun¹, Jimmy Philip¹, Wolfgang Schröder², Joseph Klewicki¹

1: University of Melbourne; 2: RWTH Aachen University

Natural convection turbulent boundary layer along a melting vertical ice face

Jimmy Philip¹, Pamoda Herath¹, Saurabh Pathak², Bishakhdatta Gayen^1,3,4, Joseph Klewicki¹

1: The Department of Mechanical Engineering, The University of Melbourne; 2: Department of Material Sciences and Engineering, Seoul National University, South Korea; 3: Australian Centre for Excellence in Antarctic Science, The University of Melbourne; 4: CAOS, Indian Institute of Science

Mean Impulse Response in a Turbulent Channel Flow (YSA)

Federica Gattere¹, Andrea Codrignani², Davide Gatti², Maurizio Quadrio¹

1: Department of Aerospace Sciences and Technologies, Politecnico di Milano, Milan, Italy; 2: Institute of Fluid Dynamics, Karlsruhe Institute of Technology, Karlsruhe, Germany

Origin of the Turbulence Structure in Adverse Pressure-Gradient Flows

T.-W. Lee¹, J.E. Park²

1: Arizona State University; 2: Arizona State University

Artificially thickened boundary layer turbulence by leading-edge tripping device

Zhanqi Tang, Nan Jiang

Department of Mechanics, Tianjin University, 300350 Tianjin, China

Drag of heterogeneous rough surfaces in internal flows

Bettina Frohnapfel, Carola Schmidt, Jonathan Neuhauser, Davide Gatti

Institute of Fluid Mechanics, Karlsruhe Institute of Technology

Effect of deceleration on a laminar separation bubble on an SD7003 airfoil

Wolfgang Dierl¹, Rainer Hain¹, Serhiy Yarusevych², Christian J. Kähler¹

1: University of the Bundeswehr Munich; 2: University of Waterloo

Energy-transfer mechanisms behind the outer peak in streamwise-Reynolds-stress profiles of turbulent boundary layers

Rahul Deshpande¹, Ricardo Vinuesa²

1: Dept. Mechanical Engr., University of Melbourne, Parkville, VIC 3010, Australia; 2: FLOW, Engr. Mechanics, KTH Royal Institute of Technology, Stockholm, 10044, Sweden

PIV experiment of the turbulent boundary layer over a superhydrophobic surface

Yufei Wang, Nan Jiang, Yufei Wang

Tianjin University

DNS of flow past a normal plate with staggered perforations (YSA)

CHITUMALLA MANOJ KUMAR, ABHINAV SINGH, VAGESH D. NARASIMHAMURTHY

IIT Madras

Exploring flow dynamics behind novel-shape bluff bodies - LES investigation (YSA)

Lena Caban¹, Agnieszka Wawrzak¹, Artur Tyliszczak¹, Dominique Thévenin²

1: Czestochowa University of Technology; 2: Otto von Guericke University Magdeburg

Turbulent channel flows over transversely isotropic porous substrates: A homogenization-based numerical investigation

Essam Nabil Ahmed, Alessandro Bottaro

DICCA, Università degli Studi di Genova, via Montallegro 1, 16145 Genova, Italy

Linear system identification on time-varying base flows: experiments in cavity flows

Colin Leclercq¹, Hadrien Labit¹, William Schlyder¹, Onofrio Semeraro², François Lusseyran²

1: DAAA, ONERA, Institut Polytechnique de Paris, 8 rue des Vertugadins, Meudon, France.; 2: LISN, Campus Universitaire, Rue Raimond Castaing bâtiment 650, 91190 Gif-sur-Yvette, France.

Compressibility Effects on Drag Reduction in Turbulent Boundary Layers by Spanwise Traveling Waves

Xiao Shao¹, Matthias Meinke¹, Wolfgang Schröder^1,2

1: RWTH Aachen University, Chair of Fluid Mechanics and Institute of Aerodynamics, Wüllnerstrasse 5a, 52062 Aachen, Germany; 2: RWTH Aachen University, JARA Center for Simulation and Data Science, Seffenter Weg 23, 52074 Aachen, Germany

Experimental analysis of turbulent flow separation control using wall corrugation under different flow history

Artur Dróżdż¹, Vasyl Sokolenko², Witold Elsner³

1: Czestochowa University of Technology; 2: Czestochowa University of Technology; 3: Czestochowa University of Technology

Impact of Preconditioning on Turbulent Flow Characteristics in Smooth and Rough Pipes – an Investigation through Experiments and High-Fidelity Simulations

Sina Nozarian, Pourya Forooghi, Mahdi Abkar

Department of Mechanical and Production Engineering, Aarhus University, Aarhus N, 8200, Denmark

LES Analysis of Turbulence Generated by Active Grid: Effect of Winglet Shape and Motion Protocol

Alper Akardere, Aziz Mert Karul, Özgür Ertunç

Özyeğin University

Oscillation control for turbulent drag reduction

Marius Ruby, Holger Foysi

University of Siegen, Chair of Fluid Dynamics

Pressure Gradient Effects on the Riblet Performance at Cruising Speed of Transonic Aircraft

Kento Kaneko¹, Akira Oyama², Aiko Yakeno³

1: The University of Tokyo; 2: JAXA; 3: Tohoku University

Separation control of a NACA 4412 with 25° sweep at high Reynolds numbers using pulsed-jet actuators

Pierre-Yves PASSAGGIA¹, Stéphane LOYER¹, Azeddine Kourta¹, Lucien Baldas², Stéphane Orieux², Phassawat Leelaburanathanakul², Guillermo Lopez-Quesada², Christine Christine Barrot-Lattes², Nicolas Mazellier¹

1: University of Orléans, INSA-CVL, PRISME, EA 4229, 45072 Orléans, France; 2: Institut Clément Ader (ICA), Université de Toulouse, CNRS, INSA, ISAE-SUPAERO, Mines-Albi, UPS, Toulouse, France

Two-point correlation analysis of large-scale structure in a turbulent channel flow installed with the flexible thin film

Shinya Nagino¹, Hiroya Mamori², Shumpei Hara¹

1: Doshisha University; 2: The University of Electro-Communications

Experimental flow control of a turbulent separated flow using sweeping jet actuators (YSA)

Mathieu Tocquer, Cédric Raibaudo, Azeddine Kourta

University of Orleans, INSA-CVL, PRISME EA 4229, 8 rue Léonard de Vinci, F45072 Orléans, France

Optimal control of the flow past a cylinder with compliant splitter plate using piezoelectric actuators (YSA)

Simone Cruciani^1,2, Franco Auteri¹, Michel Fournié²

1: Dipartimento di Scienze e Tecnologie Aerospaziali, Politecnico di Milano, via La Masa 34, 20156 Milano, Italy; 2: Institut Supérieur de l’Aéronautique et de l’Espace, 10 avenue Édouard-Belin, 31055 Toulouse, France

Control of the late stages of laminar-turbulent transition using Deep Reinforcement Learning

Juan Guzman-Inigo

City, University of London

Optimal Control in porous flow system. Application for Urban Heat Island Intensity Mitigation

Waleed Mouhali¹, Nacer Sellila², Mohammed Louaked³, Houari Mechkour⁴

1: ECE, Lyrids; 2: Université Gustave Eiffel; 3: Université de Caen, Laboratoire de Mathématiques Nicolas Oresme; 4: ECE, Lyrids

Turbulence control on plane Couette flow using reduced-order models (YSA)

Igor Maia, André Cavalieri

Instituto Tecnológico de Aeronáutica

Mechanisms for generating streaks and hairpin vortices in laminar boundary layer flow over a single dimple recessed in a flat plate

Jianxun Zhu, Cai Tian, Lars Erik Holmedal

Department of Marine Technology, Norwegian University of Science and Technology

Active drag reduction of a sphere using smart morphable surface

Anchal Sareen^1,2, Rodrigo Vilumbrales-Garcia¹, Putu Brahmanda Sudarsana²

1: Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI, USA; 2: Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA

Marangoni wakes in a viscous fluid

Thomas Bickel¹, François Detcheverry²

1: University of Bordeaux, CNRS, Laboratoire Ondes et Matière d'Aquitaine; 2: University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière

Orbiting droplets on a soap film

Benjamin Reichert¹, Jean-Paul Martischang¹, Alexis Duchesne¹, Germain Rousseaux², Michael Baudoin¹

1: Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, F59000 Lille, France; 2: Institut Pprime (UPR 3346), CNRS, Université de Poitiers, ISAE ENSMA, Poitiers, France

Oscillating Contact Lines

Pierre-Brice Bintein¹, Arnaud Grados¹, François Gallaire², Laurent Limat¹, Philippe Brunet¹

1: Laboratoire Matière et Systèmes Complexes, Université Paris Cité, CNRS; 2: LFMI-STI-IGM, EPFL, Lausanne

Puffing Water Bells Generated by Liquid Jet Impingement on a Vial: A Novel Experimental Approach

Javed Mohd, Amar Yadav, Debopam Das

Indian Institute of Technology Kanpur, Kanpur, U.P. - 208016, India

Radiation Pressure of Capillary Waves Makes for Effective Surface Tension

Steffen Bisswanger, Henning Bonart, Pyi Thein Khaing, Steffen Hardt

TU Darmstadt, Fachgebiet Nano- und Mikrofluidik

Surface-tension effects on gas bubbles rising in a vertical ethanol-jet in a water column

Tobias Baier¹, Steffen Bißwanger¹, Sebastian Dehe², Steffen Hardt¹

1: Technische Universität Darmstadt, Fachgebiet Nano- und Mikrofluidik, Darmstadt, Germany; 2: SLAC National Accelerator Laboratory, Menlo Park, California, US

Surfactant exchanges between deformed soap films

Théo Lenavetier, Emmanuel Schaub, Isabelle Cantat

Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251, F- 35000 Rennes, France

Evaluation of hot-wire measurement accuracy in turbulent boundary layers under strong adverse pressure gradient conditions

Mathias Romańczyk, Artur Dróżdż, Witold Elsner

Czestochowa University of Technology, Department of Thermal Machinery, Aleja Armii Krajowej 21, 42-200 Czestochowa, Poland

Turbulent flow across axisymmetric expansion in round pipes

Jibu Tom Jose, Gal Friedmann, Dvir Feld, Omri Ram

Technion - Israel Institute of Technology, Haifa Israel 3200003

LES and RANS simulations of non-isothermal flows in corrugated channels

Nicolas Montiel¹, Rémi Zamansky¹, Pierre Horgue¹, Julien Sebilleau¹, Mathieu Courtial², Benoît Sénéchal²

1: Institute of Fluid Mechanics of Toulouse (IMFT), CNRS-INPT-UPS, Toulouse, France; 2: AlfaLaval Packinox, Chalon-sur-Saône, France

Local-energy-flux vectors in uniform and banded turbulence for model Waleffe flow

Masanori TAKAOKA

Doshisha University

Transition to the ultimate regime in axially grooved Taylor-Couette turbulence

Kazuhiko Suga, Kohei Takeda, Yusuke Kuwata, Masayuki Kaneda

Department of Mechanical Engineering, Osaka Metropolitan University, Japan

Uniform Momentum Zones in Accelerating Turbulent Pipe Flow.

Isuru Chinthana Gunaratne¹, Byron Guerrero², Martin Francis Lambert³, Rey Cheng Chin⁴

1: School of Electrical and Mechanical Engineering, University of Adelaide, Adelaide, South Australia 5005.; 2: School of Electrical and Mechanical Engineering, University of Adelaide, Adelaide, South Australia 5005.; 3: School of Civil, Environmental and Mining Engineering, University of Adelaide, Adelaide, South Australia 5005.; 4: School of Electrical and Mechanical Engineering, University of Adelaide, Adelaide, South Australia 5005.

Numerical study of the flow in cylindrical sonic nozzles by means of two RANS turbulence models

Sebastian Weiss^1,3, Bodo Mickan¹, Jiri Polansky², Kilian Oberleithner³, Markus Bär¹, Sonja Schmelter¹

1: Physikalisch-Technische Bundesanstalt (PTB); 2: MECAS ESI, part of ESI Group; 3: Technische Universität Berlin

Coherent structures responsible for aero-optic distortions in attached and detached flow simulations.

Kévin Doria^1,2, Colin Leclercq¹, Romain Paris¹, Éric Garnier¹

1: ONERA, DAAA, Institut Polytechnique de Paris, 8 rue des Vertugadins, 92190 Meudon, France; 2: Thales LAS France, 2 Avenue Gay Lussac, 78990 Élancourt, France

Conjugate heat transfer in turbulent liquid metal flows in pipes

Jonathan Neuhauser¹, Jonathan Schmitt¹, Davide Gatti¹, Luca Marocco², Bettina Frohnapfel¹

1: Institute of Fluid Mechanics, Karlsruhe Institute of Technology, Kaiserstr. 10, 76131 Karlsruhe, Germany; 2: Department of Energy, Politecnico di Milano, via Lambruschini 4, Milan 20156, Italy

Contribution of near-wall streaks to Reynolds stress components and budgets of turbulent kinetic energy

Amir Shahirpour, Jörn Sesterhenn

Universität Bayreuth

Direct numerical simulation of small-scale roughness in stably stratified turbulent Ekman flow

Jonathan Kostelecky^1,2, Cedrick Ansorge¹

1: Institute of Meteorology, Freie Universität Berlin, Berlin, Germany.; 2: Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany.

Active learning based surrogate model for drag and heat transfer prediction in internal flows with eddy-promoters

Arjun John Kaithakkal, Yuri Koide, David Müller, Pascal Friederich, Alexander Stroh

Karlsruhe Institute of Technology

Boundary layer stabilization by Miniature Vortex Generators

András Szabó¹, Péter Tamás Nagy¹, Márton Kulcsár¹, Gilles de Baets², Maarten Vanierschot², György Paál¹

1: Dept. Of Hydrodynamic Systems, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3., 1111 Budapest, HUNGARY; 2: Dept. of Mechanical Engineering , KU Leuven, Celestijnenlaan 300, B-3001 Group T Leuven campus, Leuven, Heverlee, Belgium

Closed-loop control of finite amplitude perturbations: application to sub- and super-critical flow-bifurcations.

Mathieu Salmon¹, Colin Leclercq¹, Jean-Christophe Robinet², Denis Sipp¹

1: DAAA, ONERA, Institut Polytechnique de Paris, 8 rue des Vertugadins, 92190 Meudon, France; 2: DynFluid, Arts et Métiers, 151 boulevard de l'hôpital, 75013 Paris, France

Confluence of Wall Shear Stress and its Relation to Vorticity Surface Flux and Flow Separation

Markus Rütten

German Aerospace Center

Implicit large-eddy simulations of turbulent boundary layer over the discontinuous converging and diverging riblets

Hao Wang¹, Yitong Fan^1,2, Weipeng Li¹

1: Shanghai Jiao Tong University; 2: University of Melbourne

Using Dynamical Low-Rank Approximation to solve high-dimensional linear optimal feedback control problems

Jean-Christophe Loiseau, Simon Kern

Arts et Métiers Institute of Technology

Travelling Wave Pulsed Jet Actuation for More Efficient Flow Separation Control

Sam Land, Mark Jabbal, Stephen Ambrose

The University of Nottingham

Control of Cavity Oscillations in Transonic Flows using Periodic Microstructures

Harshit Bansal¹, M. Divakaran¹, E. Hemaprabha¹, S. K. Karthick², R. Sriram¹

1: Indian Institute of Technology Madras; 2: Indian Institute of Technology Hyderabad

Control of optimal instabilities in pulsating channel flow

Vinod Narayanan, Harvansh Dandelia

Indian Institute of Technology Gandhinagar, India

Experimental study of trailing vortices alleviation using axial synthetic jets

Manuel Garrido-Martin¹, Paloma Gutierrez-Castillo¹, Francisco J. Blanco-Rodríguez², Carlos del Pino¹

1: Universidad de Málaga, Institute for Mechatronics Engineering and Cyber-Physical Systems (IMECH.UMA), Campus de Teatinos, s/n, 29071 Málaga, Spain; 2: Área de Mecánica de Fluidos, Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Universidad de Sevilla, Avenida de los Descubrimientos s/n 41092, Sevilla, Spain

On the Behavior of a Slot Jet in a Crossflow

Dasha Gloutak

Spectral Energies, LLC

Passive control of laminar boundary-layer instabilities with phononic sub-surfaces

Nicolo Fabbiane¹, Olivier Marquet^2,3, Marie Couliou³

1: DAAA, ONERA, Institut Polytechnique de Paris, 92320 Châtillon, France; 2: DAAA, ONERA, Université Paris-Saclay, 92190 Meudon, France; 3: DAAA, ONERA, Institut Polytechnique de Paris, 92190 Meudon, France

Selective withdrawal and light fluid confinement in asymetric stratified flows

Poeiti Dorado^1,2, Pierre Carlotti¹, Olivier Vauquelin²

1: ARTELIA; 2: Aix Marseille Université, Laboratoire IUSTI

HydroGym: A Platform for Reinforcement Learning in Fluid Dynamics

Samuel Ahnert^1,2, Ludger Paehler³, Jared Callaham¹, Sajeda Mokbel^1,2, Nikolaus Adams³, Esther Lagemann², Christian Lagemann², Steven Brunton^1,2

1: University of Washington; 2: AI Institute in Dynamic Systems; 3: Technical University of Munich

Numerical analysis of the adverse pressure gradient flows over a two-dimensional wavy-wall

Witold Elsner, Piotr Kamiński, Artur Dróżdż, Paweł Niegodajew, Artur Tyliszczak

Częstochowa University of Technology

Numerical Investigation on Flow Control to Mitigate Cavitation on Hydrofoils

Adam Cox¹, Mathieu Sellier¹, Wei Hua Ho^2,3

1: University of Canterbury; 2: University of Cape Town; 3: University of the Witwatersrand