134 citations · 477 across the 12 of their papers we have counts for
14 papers
Elastoviscoplastic fluid flow past a circular cylinder
S. Parvar, K. T. Iqbal, M. N. Ardekani +2
The combined effect of fluid elasticity and yield-stress on the flow past a circular cylinder is studied by two-dimensional direct numerical simulation. We analyze the effects of y…
Orientation instability of settling spheroids in a linearly density stratified fluid
Rishabh V. More, Mehdi N. Ardekani, Luca Brandt +1
Much work has been done to understand the settling dynamics of spherical particles in a homogeneous and a stratified fluid. However, the effects of shape anisotropy on the settling…
Regimes of heat transfer in particle suspensions
Ali Yousefi, Mehdi Niazi Ardekani, Francesco Picano +1
We present results of interface-resolved simulations of heat transfer in suspensions of finite-size neutrally-buoyant spherical particles for solid volume fractions up to 35% and b…
The effect of elastic walls on suspension flow
Marco Edoardo Rosti, Mehdi Niazi Ardekani, Luca Brandt
We study suspensions of rigid particles in a plane Couette flow with deformable elastic walls. We find that, in the limit of vanishing inertia, the elastic walls induce shear thinn…
Turbulent channel flow of finite-size spherical particles with viscous hyper-elastic walls
M. N. Ardekani, M. E. Rosti, L. Brandt
We study single-phase and particulate turbulent channel flows, bounded by two incompressible hyper-elastic walls. Different wall elasticities are considered with and without a 10%…
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,…
Turbulence modulation in channel flow of finite-size spheroidal particles
M. Niazi Ardekani, L. Brandt
We study the effect of particle shape on the turbulence in suspensions of spheroidal particles at volume fraction and show how the near-wall particle dynamics deeply chan…
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…
Clustering and increased settling speed of oblate particles at finite Reynolds number
Walter Fornari, Mehdi Niazi Ardekani, Luca Brandt
We study the settling of rigid oblates in quiescent fluid using interface-resolved Direct Numerical Simulations. In particular, an immersed boundary method is used to account for t…
Inertial migration of spherical and oblate particles in straight ducts
Iman Lashgari, Mehdi Niazi Ardekani, Indradumna Banerjee +2
We study numerically the inertial migration of a single rigid sphere and an oblate spheroid in straight square and rectangular ducts. A highly accurate interface-resolved numerical…
Sedimentation of elongated non-motile prolate spheroids in homogenous isotropic turbulence
M. Niazi Ardekani, G. Sardina, L. Brandt +3
Phytoplankton are the foundation of aquatic food webs. Through photosynthesis, phytoplankton draw down CO2 at magnitudes equivalent to forests and other terrestrial plants and conv…
Heat transfer in laminar Couette flow laden with rigid spherical particles
Mehdi Niazi Ardekani, Omid Abouali, Francesco Picano +1
We study heat transfer in plane Couette flow laden with rigid spherical particles by means of direct numerical simulations using a direct-forcing immersed boundary method to accoun…
Drag reduction in turbulent channel flow laden with finite-size oblate spheroids
M. Niazi Ardekani, P. Costa, W. -P. Breugem +2
We study suspensions of oblate rigid particles in a viscous fluid for different values of the particle volume fractions. Direct numerical simulations have been performed using a di…
Numerical Study of the Sedimentation of Spheroidal Particles
Mehdi Niazi Ardekani, Pedro Costa, Wim-Paul Breugem +1
The gravity-driven motion of rigid particles in a viscous fluid is relevant in many natural and industrial processes, yet this has mainly been investigated for spherical particles.…