[HTML][HTML] Turbulent drag reduction by polymer additives: Fundamentals and recent advances
L ** - Physics of Fluids, 2019 - pubs.aip.org
A small amount of polymer additives can cause substantial reduction in the energy
dissipation and friction loss of turbulent flow. The problem of polymer-induced drag …
dissipation and friction loss of turbulent flow. The problem of polymer-induced drag …
Research progress on the collaborative drag reduction effect of polymers and surfactants
Y Gu, S Yu, J Mou, D Wu, S Zheng - Materials, 2020 - mdpi.com
Polymer additives and surfactants as drag reduction agents have been widely used in the
field of fluid drag reduction. Polymer additives can reduce drag effectively with only a small …
field of fluid drag reduction. Polymer additives can reduce drag effectively with only a small …
Statistics and spectral analysis of turbulent duct flows with flexible and rigid polymer solutions
We present an experimental investigation of turbulent drag reduction with flexible and rigid
polymer solutions in a 2: 1 aspect ratio rectangular duct. The flexible polymer is partially …
polymer solutions in a 2: 1 aspect ratio rectangular duct. The flexible polymer is partially …
Turbulent drag reduction of viscoelastic wormlike micellar gels
Long-chained, viscoelastic surfactant solutions (VES) have been widely employed in the oil
and gas industry, particularly in hydraulic fracturing and gravel-packing operations, where …
and gas industry, particularly in hydraulic fracturing and gravel-packing operations, where …
A review of drag reduction by additives in curved pipes for single‐phase liquid and two‐phase flows
The effect of drag‐reducing agents (DRAs) on fluid flows in straight pipes has been well
documented. Key among these is the effect of DRAs on turbulence statistics (Reynolds …
documented. Key among these is the effect of DRAs on turbulence statistics (Reynolds …
Turbulence statistics and flow structure in fluid flow using particle image velocimetry technique: A review
Particle image velocimetry (PIV) measurement technique provides an excellent opportunity
for investigating instantaneous spatial structures which are not always possible with point …
for investigating instantaneous spatial structures which are not always possible with point …
Active and hibernating turbulence in drag-reducing plane Couette flows
In this paper we analyze the active and hibernating turbulence in drag-reducing plane
Couette flows using direct numerical simulations of the viscoelastic finitely extensible …
Couette flows using direct numerical simulations of the viscoelastic finitely extensible …
High-molecular-weight linear polymers improve microvascular perfusion after extracorporeal circulation
K Govender, C Walser… - Journal of Applied …, 2024 - journals.physiology.org
High-molecular-weight linear polymers (HMWLPs) have earned the name “drag-reducing
polymers” because of their ability to reduce drag in turbulent flows. Recently, these polymers …
polymers” because of their ability to reduce drag in turbulent flows. Recently, these polymers …
Modeling and numerical simulations of polymer degradation in a drag reducing plane Couette flow
Mechanical molecular scission is the main problem of polymeric drag reducers. The ability to
reduce the drag is notably decreased as the molecules break down step by step as time …
reduce the drag is notably decreased as the molecules break down step by step as time …
Common features between the Newtonian laminar–turbulent transition and the viscoelastic drag-reducing turbulence
The transition from laminar to turbulent flows has challenged the scientific community since
the seminal work of Reynolds (Phil. Trans. R. Soc. Lond. A, vol. 174, 1883, pp. 935–982) …
the seminal work of Reynolds (Phil. Trans. R. Soc. Lond. A, vol. 174, 1883, pp. 935–982) …