Flow Instability: Transition and Non Linearity

Presentations

• Characterisation of streak dynamics in Couette-Poiseuille flow using orthogonal wavelet decomposition.

  ORAL

  Nov. 25, 2025, 8:00 AM – Nov. 25, 2025, 8:13 AM

  Publication: 1) published paper: "Wavelet Analysis of Simulated Tropical Convective Cloud Systems. Part I: Basic Analysis", Journal of the Atmospheric Science, J.-I. Yano, M.W. Moncrieff, X. Wu, M. Yamada<br>2) published paper: "Experimental measurements in plane Couette–Poiseuille flow - dynamics of the large- and small-scale flow", Journal of Fluid Mechanics, L. Klotz, A.M. Pavlenko, J.E. Wesfreid<br>3) planned paper: "Characterisation of streak dynamics in Couette-Poiseuille flow using orthogonal wavelet decomposition.", L. Klotz, J.-I. Yano

  Presenters

  • Lukasz Klotz

    Warsaw University of Technology

  Authors

  • Lukasz Klotz

    Warsaw University of Technology

  • Jun-Ichi Yano

    CNRM, Météo France/CNRS

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• Transition to turbulence in curved pipes: Interplay of subcritical and supercritical instability

  ORAL

  Nov. 25, 2025, 8:13 AM – Nov. 25, 2025, 8:26 AM

  Presenters

  • Stefano Brizzolara

    Princeton University

  Authors

  • Stefano Brizzolara

    Princeton University

  • Ritwik Das

    Institute of Science and Technology Austria

  • Björn Hof

    Institute of Science and Technology Austria

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• Disturbance-based criterion for analyzing the stability of shear flows utilizing input-output analysis and the small gain theorem

  ORAL

  Nov. 25, 2025, 8:26 AM – Nov. 25, 2025, 8:39 AM

  Presenters

  • Ofek Frank-Shapir

    Technion - Israel Institute of Technology

  Authors

  • Igal Gluzman

    Technion - Israel Institute of Technology

  • Ofek Frank-Shapir

    Technion - Israel Institute of Technology

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• Finite-amplitude effects in laminar-turbulent transition of viscoelastic channel flows

  ORAL

  Nov. 25, 2025, 8:39 AM – Nov. 25, 2025, 8:52 AM

  Presenters

  • Alexia Martinez Ibarra

    University of Nebraska - Lincoln

  Authors

  • Alexia Martinez Ibarra

    University of Nebraska - Lincoln

  • Jae Sung Park

    University of Nebraska - Lincoln

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• Instability and Transition in Spherical Couette Flow with Varying Rotation Ratios in a Narrow Gap

  ORAL

  Nov. 25, 2025, 8:52 AM – Nov. 25, 2025, 9:05 AM

  Presenters

  • Anjali Pramod

    Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Coimbatore

  Authors

  • Anjali Pramod

    Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Coimbatore

  • Ananthu J P

    Department of Mechanical Engineering, Indian Institute of Technology Gandhinagar

  • Vinod Narayanan

    Indian Institue of Technology Gandhinagar, Department of Mechanical Engineering, Indian Institute of Technology Gandhinagar

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• Nonlinear input-output analysis of transitional shear flows using small-signal finite-gain Lp stability

  ORAL

  Nov. 25, 2025, 9:05 AM – Nov. 25, 2025, 9:18 AM

  Publication: https://doi.org/10.48550/arXiv.2506.08129

  Presenters

  • Zhengyang Wei

    University of Connecticut

  Authors

  • Zhengyang Wei

    University of Connecticut

  • Chang Liu

    University of Connecticut

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• Boundary layer transition over rotating blades

  ORAL

  Nov. 25, 2025, 9:18 AM – Nov. 25, 2025, 9:31 AM

  Publication: Viktoriya Giryanskaya, Nathan Lorah, James Coder, "Global Linear Stability Analysis of the Flow over Rotating Blades", Vertical Flight Society 81st Annual Forum and Technology Display, May 2025

  Presenters

  • Viktoriya Giryanskaya

    Penn State University

  Authors

  • Viktoriya Giryanskaya

    Penn State University

  • James G Coder

    Penn State University

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• Identifying efficient routes to laminarization: an optimization approach

  ORAL

  Nov. 25, 2025, 9:31 AM – Nov. 25, 2025, 9:44 AM

  Presenters

  • Jake Buzhardt

    University of Wisconsin - Madison

  Authors

  • Jake Buzhardt

    University of Wisconsin - Madison

  • Michael David Graham

    University of Wisconsin - Madison

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• Instability in a Spatially-Periodic Channel: Aspect-Ratio Dependence

  ORAL

  Nov. 25, 2025, 9:44 AM – Nov. 25, 2025, 9:57 AM

  Presenters

  • Marc Antoni Guasch

    Georgia Institute of Technology

  Authors

  • Marc Antoni Guasch

    Georgia Institute of Technology

  • Brendan McCluskey

    Princeton University

  • Alex J Warhover

    Georgia Institute of Technology

  • Parisa Mirbod

    University of Illinois at Chicago, Department of Mechanical and Industrial Engineering, University of Illinois Chicago

  • Roman O Grigoriev

    Georgia Institute of Technology

  • Ari N Glezer

    Georgia Institute of Technology

  • Michael F Schatz

    Georgia Institute of Technology

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• On the effects of active flow control on exact coherent states in channel flow

  ORAL

  Nov. 25, 2025, 9:57 AM – Nov. 25, 2025, 10:10 AM

  Presenters

  • Cesar A Leos

    University of Nebraska - Lincoln

  Authors

  • Cesar A Leos

    University of Nebraska - Lincoln

  • Jae Sung Park

    University of Nebraska - Lincoln

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