Flow Instability: General Theory

Presentations

• Symmetries of the linearized Navier-Stokes equation and their impact on the eigenvalue spectrum of stability theory

  ORAL

  Nov. 24, 2025, 8:00 AM – Nov. 24, 2025, 8:13 AM

  Presenters

  • Martin Oberlack

    Technische Universitat Darmstadt

  Authors

  • Martin Oberlack

    Technische Universitat Darmstadt

  • Kilian Wilhelm

    Technische Universität Darmstadt

  • Simon Görtz

    Tu Darmstadt, Technische Universität Darmstadt

  • Johannes Heinrich Conrad

    TU Darmstadt, Technische Universität Darmstadt

  View abstract →

• Multiscale spatial quasilinear wake modeling

  ORAL

  Nov. 24, 2025, 8:13 AM – Nov. 24, 2025, 8:26 AM

  Presenters

  • Greg P Chini

    University of New Hampshire

  Authors

  • Greg P Chini

    University of New Hampshire

  • Remil Mushthaq

    University of New Hampshire

  • Narinder Singh

    University of New Hampshire

  View abstract →

• A dynamically-consistent framework for mean flow stability and resolvent analysis

  ORAL

  Nov. 24, 2025, 8:26 AM – Nov. 24, 2025, 8:39 AM

  Publication: A manuscript of the same name is planned for submission to PRF

  Presenters

  • Christopher M Douglas

    Duke University

  Authors

  • Christopher M Douglas

    Duke University

  View abstract →

• Statistical evolution of non-Gaussian initial disturbances under transient growth

  ORAL

  Nov. 24, 2025, 8:39 AM – Nov. 24, 2025, 8:52 AM

  Presenters

  • Saarthak Gupta

    University of Michigan

  Authors

  • Saarthak Gupta

    University of Michigan

  • James H Paulson

    University of Michigan

  • Peter Keaton Frame

    University of Michigan

  • Aaron S. Towne

    University of Michigan

  View abstract →

• Can minimal absorbing zones predict turbulent mean profiles?

  ORAL

  Nov. 24, 2025, 8:52 AM – Nov. 24, 2025, 9:05 AM

  Publication: A paper titled "Variational Determination of Minimal Absorbing Zones in Incompressible Shear Flows" will be submitted to the Journal of Fluid Mechanics and posted on arXiv shortly.

  Presenters

  • Péter T Nagy

    Budapest University of Technology and Economics

  Authors

  • Péter T Nagy

    Budapest University of Technology and Economics

  View abstract →

• Subcritical 3D modes employing Briggs’ method – exemplified using plane Couette flow

  ORAL

  Nov. 24, 2025, 9:05 AM – Nov. 24, 2025, 9:18 AM

  Publication: M. Oberlack, K. V. Wilhelm, S. Görtz, J. Conrad, A. Yalcin, L. De<br>Broeck, and Y. Wang: New subcritical oblique modes - on an extension of Squire's theorem for<br>spatio-temporally evolving modes, under review at PRF

  Presenters

  • Kilian Wilhelm

    Technische Universität Darmstadt

  Authors

  • Kilian Wilhelm

    Technische Universität Darmstadt

  • Johannes Heinrich Conrad

    TU Darmstadt, Technische Universität Darmstadt

  • Simon Görtz

    Tu Darmstadt, Technische Universität Darmstadt

  • Martin Oberlack

    Technische Universitat Darmstadt

  • Yongqi Wang

    Technische Universität Darmstadt

  View abstract →

• Absolute Instability of Variable-Viscosity Jets with Counter-current Shear Flow

  ORAL

  Nov. 24, 2025, 9:18 AM – Nov. 24, 2025, 9:31 AM

  Presenters

  • Chujun Fu

    University of Minnesota

  Authors

  • Chujun Fu

    University of Minnesota

  • Vinod Srinivasan

    University of Minnesota

  View abstract →

• Experiments on a jet in a crossow in the low-velocity-ratio regime

  ORAL

  Nov. 24, 2025, 9:31 AM – Nov. 24, 2025, 9:44 AM

  Publication: published paper: "Experiments on a jet in a crossow in the low-velocity-ratio regime", Journal of Fluid Mechanics<br>planned paper: "Experiments on the effect of jet diameter on hairpin shedding bifurcation", M. Miszczak, L. Klotz

  Presenters

  • Mikolaj Miszczak

    Warsaw University of Technology

  Authors

  • Lukasz Klotz

    Warsaw University of Technology

  • Mikolaj Miszczak

    Warsaw University of Technology

  View abstract →

• Bridging Lyapunov stability analysis and global linear stability analysis of the chaotic flow past two square cylinders

  ORAL

  Nov. 24, 2025, 9:44 AM – Nov. 24, 2025, 9:57 AM

  Presenters

  • Sidhartha Sahu

    Imperial College London

  Authors

  • Sidhartha Sahu

    Imperial College London

  • George Papadakis

    Imperial College London

  View abstract →

• Low Reynolds number modal stability analysis of the 6-1 prolate spheroid

  ORAL

  Nov. 24, 2025, 9:57 AM – Nov. 24, 2025, 10:10 AM

  Presenters

  • Andras Szabo

    University of Michigan

  Authors

  • Andras Szabo

    University of Michigan

  • Krishnan Mahesh

    University of Michigan, University of Minnesota

  View abstract →

• The linear stability of superposed inviscid and viscous stagnation-point flows

  ORAL

  Nov. 24, 2025, 10:10 AM – Nov. 24, 2025, 10:23 AM

  Presenters

  • Yifeng Mao

    University of California, San Diego

  Authors

  • Yifeng Mao

    University of California, San Diego

  • Stefan Gregory Llewellyn Smith

    University of California, San Diego

  View abstract →

• Strato-rotational instability in Rayleigh-stable regimes

  ORAL

  Nov. 24, 2025, 10:23 AM – Nov. 24, 2025, 10:36 AM

  Publication: [1] Park, Billant, Journal of Fluid Mechanics, 725, 262-280 (2013)<br>[2] Park, Journal of Fluid Mechanics, 1010, A3 (2025)

  Presenters

  • Junho Park

    Coventry University

  Authors

  • Junho Park

    Coventry University

  • Jacopo Gianfrani

    Coventry University, UK and Università degli Studi di Napoli Federico II, Italy

  • Abhishek Kumar

    Coventry University, UK

  View abstract →

• Numerical and experimental study of discrete trapped acoustic waves

  ORAL

  Nov. 24, 2025, 10:36 AM – Nov. 24, 2025, 10:49 AM

  Presenters

  • Brandon Chung Yuen Yeung

    University of California, San Diego

  Authors

  • Brandon Chung Yuen Yeung

    University of California, San Diego

  • Michael Stavropoulos

    Institut Pprime, CNRS-Université de Poitiers-ENSMA

  • Anton Lebedev

    Institut Pprime, CNRS-Université de Poitiers-ENSMA

  • Damien Eysseric

    Institut Pprime, CNRS-Université de Poitiers-ENSMA

  • Vincent Jaunet

    Institut Pprime, CNRS-Université de Poitiers-ENSMA

  • Peter Jordan

    Institut Pprime, CNRS-Université de Poitiers-ENSMA

  • Oliver T Schmidt

    University of California San Diego, University of California, San Diego

  View abstract →