Zobrazeno 1 - 10
of 259
pro vyhledávání: '"Haward, Simon"'
Many environmental, energy, and industrial processes involve the flow of polymer solutions in three-dimensional (3D) porous media where fluid is confined to navigate through complex pore space geometries. As polymers are transported through the tortu
Externí odkaz:
http://arxiv.org/abs/2412.03510
Elastoviscoplastic (EVP) fluids, which exhibit both solid-like and liquid-like behavior depending on the applied stress, are critical in industrial processes involving complex geometries such as porous media and wavy channels. In this study, we inves
Externí odkaz:
http://arxiv.org/abs/2409.15935
The thinning of liquid bridges under capillary stress occurs in widespread processes like jetting, dripping, and spraying, and creates a strong extensional flow capable of stretching dissolved polymers. If the elastic stress exceeds the viscous stres
Externí odkaz:
http://arxiv.org/abs/2407.00919
In this study, we delve into the intricacies of elastoviscoplastic (EVP) fluids, particularly focusing on how polymer additives influence their extensional behavior. Our findings reveal that polymer additives significantly alter the extensional prope
Externí odkaz:
http://arxiv.org/abs/2406.06001
Measurements of the capillary-driven thinning and breakup of fluid filaments are widely used to extract extensional rheological properties of complex materials. For viscoelastic (e.g., polymeric) fluids, the determination of the longest relaxation ti
Externí odkaz:
http://arxiv.org/abs/2403.04103
Autor:
Calabrese, Vincenzo, Santos, Tatiana Porto, Lopez, Carlos G., Lettinga, Minne Paul, Haward, Simon J., Shen, Amy Q.
Polymers and rod-like colloids (PaRC) adopt a favorable orientation under sufficiently strong flows. However, how the flow kinematics affect the alignment of such nanostructures according to their extensibility remains unclear. By analysing the shear
Externí odkaz:
http://arxiv.org/abs/2311.13093
In Part I of this paper [Haward et al. submitted (2023)], we presented a new three-dimensional microfluidic device (the optimized uniaxial and biaxial extensional rheometer, OUBER) for generating near-homogeneous uniaxial and biaxial elongational flo
Externí odkaz:
http://arxiv.org/abs/2302.12411
Autor:
Haward, Simon J., Pimenta, Francisco, Varchanis, Stylianos, Carlson, Daniel W., Toda-Peters, Kazumi, Alves, Manuel A., Shen, Amy Q.
We present a numerical optimization of a "6-arm cross-slot" device, yielding several three-dimensional shapes of fluidic channels designed to impose close approximations to ideal uniaxial (or biaxial) stagnation point extensional flow under the const
Externí odkaz:
http://arxiv.org/abs/2302.10401
In a viscoelastic flow over a microfluidic canopy of polymeric pillars, we report the spontaneous emergence of waves in the form of propagating regions of low flow velocity compared to the surrounding flow. The occurrence of the wave is chaotic and s
Externí odkaz:
http://arxiv.org/abs/2208.07651
Understanding the hydrodynamic alignment of colloidal rods in polymer solutions is pivotal for manufacturing structurally ordered materials. How polymer crowding influences the flow-induced alignment of suspended colloidal rods remains unclear when r
Externí odkaz:
http://arxiv.org/abs/2205.03994