We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry under low Reynolds number flow conditions. By using several viscoelastic fluids, we investigate the effects of the microchannel bounding walls and of the polymer solution concentration on the flow patterns. We demonstrate that for concentrated polymer solutions, the flow undergoes a bifurcation above a critical Weissenberg number (Wi) in which the flow becomes asymmetric but remains steady. The appearance of this elastic instability depends on the channel aspect ratio, defined as the ratio between the depth and the width of the channels. At high aspect ratios, when bounding wall effects are reduced, two types of elastic instabilities were obser...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
Many artificial and natural fluids contain macromolecules, particles or droplets that impart complex...
Flow around a cylinder is a classical problem in fluid dynamics and also one of the benchmarks for t...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
In this work we demonstrate numerically, using a 3D finite-volume method, that viscoelastic flow in ...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
Interior stagnation point flows of viscoelastic liquids arise in a wide variety of applications incl...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
Many artificial and natural fluids contain macromolecules, particles or droplets that impart complex...
Flow around a cylinder is a classical problem in fluid dynamics and also one of the benchmarks for t...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
We present an experimental investigation of viscoelastic fluid flow in a cross-slot microgeometry un...
In this work we demonstrate numerically, using a 3D finite-volume method, that viscoelastic flow in ...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
This paper, which has two Haverford student co-authors, shows novel instabilities of polymer solutio...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
Interior stagnation point flows of viscoelastic liquids arise in a wide variety of applications incl...
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) ...
Many artificial and natural fluids contain macromolecules, particles or droplets that impart complex...
Flow around a cylinder is a classical problem in fluid dynamics and also one of the benchmarks for t...