116 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- RWTH Aachen UniversityDE44 papers
- Frumkin Institute of Physical Chemistry and ElectrochemistryRU28 papers
- Lomonosov Moscow State UniversityRU27 papers
- Russian Academy of SciencesRU14 papers
- Central Aerohydrodynamic InstituteRU8 papers
- Johannes Gutenberg University MainzDE7 papers
- Eindhoven University of TechnologyNL4 papers
- Centre National de la Recherche ScientifiqueFR3 papers
- Forschungszentrum JülichDE3 papers
- Heinrich Heine University DüsseldorfDE3 papers
- University College DublinIE3 papers
- Helmholtz Institute Erlangen-NürnbergDE2 papers
22 papers · 1 filter
A mini-module with built-in spacers for high-throughput ultrafiltration
Kristina Baitalow, Denis Wypysek, Martin Leuthold +3
Ultrafiltration membrane modules suffer from a permeate flow decrease arising during filtration and caused by concentration polarization and fouling in, e.g., fermentation broth pu…
How does porosity heterogeneity affect the transport properties of multibore filtration membranes?
Denis Wypysek, Deniz Rall, Tobias Neef +3
The prediction of pressure and flow distributions inside porous membranes is important if the geometry deviates from single-bore tubular geometries. This task remains challenging,…
Direct 3D observation and unraveling of electroconvection phenomena during concentration polarization at ion-exchange membranes
Felix Stockmeier, Michael Schatz, Malte Habermann +3
A decade ago, two-dimensional microscopic flow visualization proved the theoretically predicted existence of electroconvection roles as well as their decisive role in destabilizing…
Achieving large zeta-potentials with charged porous surfaces
Olga I. Vinogradova, Elena F. Silkina, Naren Bag +1
We discuss an electro-osmotic flow near charged porous coatings of a finite hydrodynamic permeability, impregnated with an outer electrolyte solution. It is shown that their electr…
Flow-driven collapse of lubricant-infused surfaces
Evgeny S. Asmolov, Tatiana V. Nizkaya, Olga I. Vinogradova
Lubricant-infused surfaces in an outer liquid flow generally reduce viscous drag. However, owing to the meniscus deformation, the infused state could collapse. Here we discuss the…
Enhanced slip properties of lubricant-infused grooves
Evgeny S. Asmolov, Tatiana V. Nizkaya, Olga I. Vinogradova
We ascertain the enhanced slip properties for a liquid flow over lubricant-infused unidirectional surfaces. This situation reflects many practical settings involving liquid flows p…
Fouling mitigation in tubular membranes by 3D-printed turbulence promoters
Sarah Armbruster, Oskar Cheong, Jonas Lölsberg +3
Despite intensive research, fouling remains a severe problem in membrane filtration. It is often controlled by applying turbulent flow which requires a higher energy consumption. S…
Sinusoidal shaped hollow fibers for enhanced mass transfer
Tobias Luelf, Maik Tepper, Hans Breisig +1
Inducing secondary flows and vortices is known to enhance mass transport. They can be imposed by structured flow channels for instance. In particular, these vortices reduce fouling…
Boundary conditions at the gas sectors of superhydrophobic grooves
Alexander L. Dubov, Tatiana V. Nizkaya, Evgeny S. Asmolov +1
The hydrodynamics of liquid flowing past gas sectors of unidirectional superhydrophobic surfaces is revisited. Attention is focussed on the local slip boundary condition at the liq…
Inertial focusing of finite-size particles in microchannels
Evgeny S. Asmolov, Alexander L. Dubov, Tatiana V. Nizkaya +2
At finite Reynolds numbers, Re, particles migrate across laminar flow streamlines to their equilibrium positions in microchannels. This migration is attributed to a lift force, and…
Advective superdiffusion in superhydrophobic microchannels
Tatiana V. Nizkaya, Evgeny S. Asmolov, Olga I. Vinogradova
We consider pressure-driven flows in wide microchannels, and discuss how a transverse shear, generated by misaligned superhydrophobic walls, impacts cross-sectional spreading of Br…
Electro-hydrodynamics near Hydrophobic Surfaces
S. R. Maduar, A. V. Belyaev, V. Lobaskin +1
We show that an electro-osmotic flow near the slippery hydrophobic surface depends strongly on the mobility of surface charges, which are balanced by counter-ions of the electrosta…
Flows and mixing in channels with misaligned superhydrophobic walls
Tatiana V. Nizkaya, Evgeny S. Asmolov, Jiajia Zhou +2
Aligned superhydrophobic surfaces with the same texture orientation reduce drag in the channel and generate secondary flows transverse to the direction of the applied pressure grad…
Lattice-Boltzmann simulations of the drag force on a sphere approaching a superhydrophobic striped plane
Alexander L. Dubov, Sebastian Schmieschek, Evgeny S. Asmolov +2
By means of lattice-Boltzmann simulations the drag force on a sphere of radius R approaching a superhydrophobic striped wall has been investigated as a function of arbitrary separa…
'Gas cushion' model and hydrodynamic boundary conditions for superhydrophobic textures
Tatiana V. Nizkaya, Evgeny S. Asmolov, Olga I. Vinogradova
Superhydrophobic Cassie textures with trapped gas bubbles reduce drag, by generating large effective slip, which is important for a variety of applications that involve a manipulat…
Effective slippage on superhydrophobic trapezoidal grooves
Jiajia Zhou, Evgeny S. Asmolov, Friederike Schmid +1
We study the effective slippage on superhydrophobic grooves with trapezoidal cross-sections of various geometries (including the limiting cases of triangles and rectangular stripes…
Flow in channels with superhydrophobic trapezoidal textures
Tatiana V. Nizkaya, Evgeny S. Asmolov, Olga I. Vinogradova
Superhydrophobic one-dimensional surfaces reduce drag and generate transverse hydrodynamic phenomena by combining hydrophobicity and roughness to trap gas bubbles in microscopic te…
Effective slip-length tensor for a flow over weakly slipping stripes
Evgeny S. Asmolov, Jiajia Zhou, Friederike Schmid +1
We discuss the flow past a flat heterogeneous solid surface decorated by slipping stripes. The spatially varying slip length, , is assumed to be small compared to the scale o…
Anisotropic flow in striped superhydrophobic channels
Jiajia Zhou, Aleksey V. Belyaev, Friederike Schmid +1
We report results of dissipative particle dynamics simulations and develop a semi-analytical theory of an anisotropic flow in a parallel-plate channel with two superhydrophobic str…
Effective hydrodynamic boundary conditions for microtextured surfaces
Anne Mongruel, Thibault Chastel, Evgeny S. Asmolov +1
We report measurements of the hydrodynamic drag force acting on a smooth sphere falling down under gravity to a plane decorated with microscopic periodic grooves. Both surfaces are…
Effective slip boundary conditions for arbitrary one-dimensional surfaces
Evgeny S. Asmolov, Olga I. Vinogradova
In many applications it is advantageous to construct effective slip boundary conditions, which could fully characterize flow over patterned surfaces. Here we focus on laminar shear…
Tensorial slip of super-hydrophobic channels
Sebastian Schmieschek, Aleksey V. Belyaev, Jens Harting +1
We describe a generalization of the tensorial slip boundary condition, originally justified for a thick (compared to texture period) channel, to any channel thickness. The eigenval…