5 papers · 1 filter
Asymptotic limits of the axisymmetric solution of the Brinkman equation for a point force near a no-slip wall
Abdallah Daddi-Moussa-Ider, Andrej Vilfan
We derive the far-field and near-field solutions for the Green's function of a point force acting perpendicular to a no-slip wall in a Brinkman fluid, focusing on the regime where…
Hydrodynamic flow field and frictional resistance coefficient of a disk rotating steadily in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Elsen Tjhung +1
We analyze the hydrodynamics of a rotating disk in a two-dimensional compressible fluid layer with odd viscosity. Unlike conventional fluids, odd viscosity introduces a radial flow…
On force balance in Brinkman fluids under confinement
Abdallah Daddi-Moussa-Ider, Andrej Vilfan
A point force acting on a Brinkman fluid in confinement is always counterbalanced by the force on the porous medium, the force on the walls and the stress at open boundaries. We di…
Analytical solution for the hydrodynamic resistance of a disk in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Andrej Vilfan, Yuto Hosaka
Chiral active fluids can exhibit odd viscosity, a property that breaks the time-reversal and parity symmetries. Here, we examine the hydrodynamic flows of a rigid disk moving in a…
Hydrodynamic efficiency limit on a Marangoni surfer
Abdallah Daddi-Moussa-Ider, Ramin Golestanian, Andrej Vilfan
A Marangoni surfer is an object embedded in a gas-liquid interface, propelled by gradients in surface tension. We derive an analytical theorem for the lower bound on the viscous di…