72 citations · 158 across the 11 of their papers we have counts for
13 papers · 1 filter
DeboRheo v2.0: Improved Robustness for Geometrical VOF Simulations of Viscoelastic Two-Phase Flows
Daulet Izbassarov, Matthias Niethammer, Rahul Subburaj +5
We present DeboRheo v2.0, an unstructured, geometrically unsplit Volume-of-Fluid framework implemented in OpenFOAM for viscoelastic two-phase flows. Version 2.0 improves numerical…
Elastic turbulence in straight confined geometries
Giulio Foggi Rota, Daulet Izbassarov, Aditya Tekriwal +1
Elastic turbulence (ET) in straight geometries has been extensively studied in idealised configurations such as periodic shear and planar channel flow, yet experiments are typicall…
accLB: A High-Performance Lattice Boltzmann Code for Multiphase Turbulence on Multi-Gpu Architectures
Marco Lauricella, Aritra Mukherjee, Luca Brandt +3
In this work, we present accLB, a high-performance Fortran-based lattice Boltzmann (LB) solver tailored to multiphase turbulent flows on multi-GPU architectures. The code couples a…
Bubbles-induced transition to elasto-inertial turbulence
Hafiz Usman Naseer, Daulet Izbassarov, Marco Edoardo Rosti +1
Interface-resolved direct numerical simulations are performed to investigate bubble-induced transition from laminar to elasto-inertial turbulent (EIT) state in a pressure-driven vi…
Dynamics of bubble migration in a square channel flow of a viscoelastic fluid
Hafiz Usman Naseer, Daulet Izbassarov, Zaheer Ahmed +1
Cross-stream migration of a deformable bubble is investigated computationally in a pressure-driven channel flow of a viscoelastic fluid via interface-resolved simulations. The flow…
Turbulence impacts synthetic methanol production in a square duct flow: a direct numerical simulation (DNS) study
Marko Korhonen, Daulet Izbassarov, Judit Nyári +2
Improving the synthetic methanol production efficiency is essential for adopting carbon-neutral methanol technologies. In the present computational fluid dynamics (CFD) study, we i…
Effects of elastoviscoplastic properties of mucus on airway closure in healthy and pathological conditions
O. Erken, B. Fazla, F. Romanò +3
Airway mucus is a complex material with both viscoelastic and viscoplastic properties that vary with healthy and pathological lung conditions. In this study, the effects of these c…
Dynamics of an elastoviscoplastic droplet in a Newtonian medium under shear flow
Daulet Izbassarov, Outi Tammisola
The dynamics of a single elastoviscoplastic (EVP) drop immersed in plane shear flow of a Newtonian fluid is studied by 3D direct numerical simulations using a finite-difference and…
Polymer drag reduction in surfactant-contaminated turbulent bubbly channel flows
Daulet Izbassarov, Zaheer Ahmed, Pedro Costa +3
Polymer additives are commonly utilized to manipulate bubbly flows in various applications. Here, we investigate the effects of clean and contaminated bubbles driven upwards (upflo…
Turbulent bubbly channel flows: Effects of soluble surfactant and viscoelasticity
Zaheer Ahmed, Daulet Izbassarov, Pedro Costa +2
Interface-resolved direct numerical simulations are performed to examine the combined effects of soluble surfactant and viscoelasticity on the structure of a bubbly turbulent chann…
The effect of droplet coalescence on drag in turbulent channel flows
Ianto Cannon, Daulet Izbassarov, Outi Tammisola +2
We study the effect of droplet coalescence on turbulent wall-bounded flows, by means of direct numerical simulations. In particular, the volume-of-fluid and front-tracking methods…
Turbulent channel flow of an elastoviscoplastic fluid
Marco Edoardo Rosti, Daulet Izbassarov, Outi Tammisola +2
We present numerical simulations of laminar and turbulent channel flow of an elastoviscoplastic fluid. The non-Newtonian flow is simulated by solving the full incompressible Navier…
Computational modeling of multiphase viscoelastic and elastoviscoplastic flows
Daulet Izbassarov, Marco E. Rosti, M. Niazi Ardekani +4
In this paper, a three-dimensional numerical solver is developed for suspensions of rigid and soft particles and droplets in viscoelastic and elastoviscoplastic (EVP) fluids. The p…