Work

Flow dynamics of a dandelion pappus: A linear stability approach

Year: 2019

Type: article

Abstract: A dandelion pappus is modelled as a porous disk. A stability analysis finds that if the disk is sufficiently porous the steady wake is stable and consists in a separated recirculating vortex ring, which allows a long-distance dispersal of the dandelion seeds.

Source: Physical Review Fluids

DOI: 10.1103/physrevfluids.4.071901

Authors: P. G. Ledda, L. Siconolfi, F. Viola, S. Camarri, F. Gallaire

Institutions: École Polytechnique Fédérale de Lausanne, Max Planck University of Twente Center for Complex Fluid Dynamics, University of Twente, University of Pisa

Language: English

Topic: Fluid Dynamics and Turbulent Flows

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Awards: Vortices, instabilities and turbulence in the heart: an accurate electro-fluid-structure model, Transient instabilities of coating flows on curved substrates