45 citations · 318 across the 20 of their papers we have counts for
20 papers
Sub-Yield Dynamics in Yield-Stress Materials
Alice Woodbridge, Kasra Amini, Fredrik Lundell +4
The mechanical response of yield-stress materials below the yield point remains a subject of debate. Two of the most widely used constitutive models for these materials offer funda…
Breaking the Reptation Trap: Escape Dynamics of Semi-Flexible Polymers in Crowded Networks
Ahmad Reza Motezakker, Andrés Córdoba, Tomas Rosén +2
Semi-flexible polymers in crowded environments exhibit complex dynamics that play a crucial role in various biological and material design processes. Based on the classic reptation…
Experimental Investigation on Particle-Laden Flows of Viscoelastic Fluids in Micro-Channels Using Optical Coherence Tomography
Kasra Amini, Gustaf Martensson, Outi Tammisola +1
Considering the nonlinear response of non-Newtonian fluids to the local shear exerted on the bulks of fluid, the initially quasi-uniform distribution of the particles might be subj…
Droplet impact on asymmetric hydrophobic microstructures
Susumu Yada, Ugis Lacis, Wouter van der Wijngaart +3
Textured hydrophobic surfaces that repel liquid droplets unidirectionally are found in nature such as butterfly wings and ryegrass leaves and are also essential in technological pr…
Formation of colloidal threads in geometrically varying flow-focusing channels
V. Krishne Gowda, Cecilia Rydefalk, L. Daniel Söderberg +1
When two miscible fluids are brought into contact with each other, the concentration gradients induce stresses. These are referred to as Korteweg stresses and are analogous to inte…
Parabolic velocity profile causes drift of inertial prolate spheroids -- but gravity is stronger
Joar Bagge, Tomas Rosén, Fredrik Lundell +1
Motion of elongated particles in shear is studied. In applications where particles are much heavier than the carrying fluid, e.g. aerosols, the influence of particle inertia domina…
Droplet impact on surfaces with asymmetric microscopic features
Susumu Yada, Blandine Allais, Wouter van der Wijngaart +3
The impact of liquid drops on a rigid surface is central in cleaning, cooling and coating processes in both nature and industrial applications. However, it is not clear how details…
Droplet leaping governs microstructured surface wetting
Susumu Yada, Shervin Bagheri, Jonas Hansson +4
Microstructured surfaces that control the direction of liquid transport are not only ubiquitous in nature, but they are also central to technological processes such as fog/water ha…
Finite-size spherical particles in a square duct flow of an elastoviscoplastic fluid: an experimental study
Sagar Zade, Tafadzwa John Shamu, Fredrik Lundell +1
The present experimental study addresses the flow of a Yield Stress Fluid with some elasticity (Carbopol gel) in a square duct. The behaviour of two fluids with lower and higher yi…
Effective interfacial tension in flow-focusing of colloidal dispersions: 3D numerical simulations and experiments
Krishne Gowda., Christophe Brouzet, Thibault Lefranc +2
An interface between two miscible fluids is transient, existing as a non-equilibrium state before complete molecular mixing is reached. However, during the existence of such an int…
Characterizing the Orientational and Network Dynamics of Polydisperse Nanofibres at the Nanoscale
Christophe Brouzet, Nitesh Mittal, Fredrik Lundell +1
Polydisperse fibre networks are the basis of many natural and man-made architectures, ranging from high-performance bio-based materials to components of living cells and tissues. T…
Turbulence modulation by finite-size spherical particles in Newtonian and viscoelastic fluids
Sagar Zade, Fredrik Lundell, Luca Brandt
We experimentally investigate the influence of finite-size spherical particles in turbulent flows of a Newtonian and a drag reducing viscoelastic fluid at varying particle volume f…
Buoyant finite-size particles in turbulent duct flow
Sagar Zade, Walter Fornari, Fredrik Lundell +1
Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV) have been employed to investigate the dynamics of finite-size spherical particles, slightly heavier than th…
Turbulent duct flow with polymers
Armin Shahmardi, Sagar Zade, Mehdi N. Ardekani +4
We have performed direct numerical simulation of the turbulent flow of a polymer solution in a square duct, with the FENE-P model used to simulate the presence of polymers. First,…
Experimental investigation of turbulent suspensions of spherical particles in a square duct
Sagar Zade, Pedro Costa, Walter Fornari +2
We report experimental observations of turbulent flow with spherical particles in a square duct. Three particle sizes namely: = 40, 16 and 9 ( being the duct full he…
Orientation and dynamics of stiff polymeric nanoparticles
Christophe Brouzet, Nitesh Mittal, L. Daniel Söderberg +1
Successful assembly of suspended nanoscale rod-like particles depends on fundamental phenomena controlling rotational and translational diffusion. Despite the significant developme…
Dynamic characterization of cellulose nanofibrils in sheared and extended semi-dilute dispersions
Tomas Rosén, Nitesh Mittal, Stephan V. Roth +3
New materials made through controlled assembly of dispersed cellulose nanofibrils (CNF) has the potential to develop into biobased competitors to some of the highest performing mat…
Evaluating alignment of elongated nanoparticles in cylindrical geometries through small angle X-ray scattering experiments
Tomas Rosén, Christophe Brouzet, Stephan V. Roth +2
The increased availability and brilliance of new X-ray facilities have in the recent years opened up the possibility to characterize the motion of dispersed nanoparticles in variou…
Experimental study of a three dimensional cylinder-filament system
Nicolas Brosse, Carl Finmo, Fredrik Lundell +1
This experimental study reports on the behavior of a filament attached to the rear of a three- dimensional cylinder. The axis of the cylinder is placed normal to a uniform incoming…
The role of inertia for the rotation of a nearly spherical particle in a general linear flow
F. Candelier, J. Einarsson, F. Lundell +2
We analyse the angular dynamics of a neutrally buoyant nearly spherical particle immersed in a steady general linear flow. The hydrodynamic torque acting on the particle is obtaine…