Resources

Author(s): Kazi Tassawar Iqbal, Daulet Izbassarov, Luca Brandt, and Outi Tammisola Dispersing a second phase throughout a carrier fluid significantly alters the system’s bulk rheology, a critical consideration for the transport and mixing of multiphase systems comprising elastoviscoplastic (EVP) carrier fluids ubiquitous in industrial processes. This work investigates the role of elasticity and yield stress of the carrier fluid on the bulk rheology...

Author(s): Laurent Talon and Dominique Salin We investigate the flow of discontinuous shear-thickening fluids with S-shaped rheology in confined and disordered geometries. We demonstrate that, due to the emergence of highly viscous structures, such fluids tend to limit the flow rate at a given pressure gradient. In channel geometries containing obstacles, these structures form in the most constricted regions. In porous media, they also occur in...

Author(s): Peter Frick, Andrei Sukhanovskii, Andrei Vasiliev, Sergey Filimonov, and Andrei Gavrilov Complex mutual interaction between two convective oscillators are studied. A variety of regular and irregular modes are found. The dynamics of large plates strongly depend on the depth of immersion and include convective pendulum mode with regular antiphase oscillations, irregular fluctuations, full stops and synchronized periodic movements. The...

Author(s): Gene Patrick S. Rible, Syed Jaffar Raza, Connor K. Traynor, Joshua T. Watkins, Hannah P. Sebek, Alexander R. Bottoms, Tadd T. Truscott, and Andrew K. Dickerson Our experiments bridge classic raindrop shape theory and the behavior of contaminated drops in atmospheric and industrial aerosols. With two cameras, we reconstruct the three-dimensional shape, orientation, and oscillation of levitated nanofluid drops. Low nanoparticle loading...

Author(s): Theo A. Lewy and Rich R. Kerswell Pressure-driven flow of a dilute polymer solution has been numerically observed to support elastic turbulence which is organized around the interactions of localized versions of two-dimensional arrowhead traveling waves. Here, we isolate these spanwise-localized arrowheads for the first time. We find symmetric and asymmetric states, and identify a process in which these localized states split to spawn...

Author(s): Ellen M. Jolley, Daniel J. Booth, and Thomas D. Montenegro-Johnson We consider hydrogel swelling while confined between two rigid walls in cases of (i) slip and (ii) no slip boundary conditions on the walls. Using the framework of large deformation poroelasticity, we find a fully nonlinear solution numerically in case (i) and a linear solution analytically in case (ii), and show that in case (ii) the hydrogel exerts substantially more...

Author(s): Aditya Ganesh, Dario Vincenzi, Ranganathan Prabhakar, and Jason R. Picardo Brownian dynamics simulations of a bead-spring chain in a turbulent flow show that hydrodynamic interactions (HI) modify the stretching of polymers, owing to hydrodynamic shielding and conformation-dependent drag. HI delays the turbulence-induced migration between coiled and stretched states and alters the distribution of extension. Stiff chains stretch more...