Physical Review Fluids

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Recent articles in Physical Review Fluids
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Self-propelled colloidal particle near a planar wall: A Brownian dynamics study

Mon, 01/29/2018 - 10:00

Author(s): Ali Mozaffari, Nima Sharifi-Mood, Joel Koplik, and Charles Maldarelli

The stability of the boundary-guided motion of a diffusiophoretically self-propelled locomotor along a planar wall to mechanical disturbances and Brownian forces is examined theoretically. The main goal is to understand the conditions under which this passively guided motion is stable.

[Phys. Rev. Fluids 3, 014104] Published Mon Jan 29, 2018

Cohesion and agglomeration of wet powders

Mon, 01/29/2018 - 10:00

Author(s): Pascal S. Raux and Anne-Laure Biance

The cohesion of a wet grain assembly is encountered in many situations, such as in the fabrication of sandcastles, the preparation of couscous, crumbles, or other granulated systems. Two simple experiments on model liquid/bead mixtures are performed to understand the behavior of such systems.

[Phys. Rev. Fluids 3, 014301] Published Mon Jan 29, 2018

Tracking coherent structures in massively-separated and turbulent flows

Mon, 01/29/2018 - 10:00

Author(s): Matthew Rockwood, Yangzi Huang, and Melissa Green

Coherent vortex structures are tracked in simulations of massively-separated and turbulent flows using Lagrangian saddles found as intersections of positive and negative finite-time Lyapunov exponent ridges. This allows vortices to be tracked objectively in time and space in a variety of flows.

[Phys. Rev. Fluids 3, 014702] Published Mon Jan 29, 2018