In this numerical and theoretical work, we study the turbulent channel flow of Newtonian and elastoviscoplastic fluids. The coherent structures in these flows are identified by means of …
In this work we study the influence of fluid viscoelasticity on the performance of lubricated contacts in the presence of cavitation. Several studies of viscoelastic lubricants have been …
H Ahmed, L Biancofiore - Journal of Non-Newtonian Fluid Mechanics, 2021 - Elsevier
Lubricants can exhibit significant viscoelastic effects due to the addition of high molecular weight polymers. The overall behavior of the mixture is vastly different from a simpler …
Lubrication is essential to minimize wear and friction between contacting surfaces in relative motion. Oil based lubricants are often enhanced via polymer additives to minimize self …
A Shahmardi, S Zade, MN Ardekani… - Journal of Fluid …, 2019 - cambridge.org
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, a …
Direct numerical simulations are carried out to study the effect of finite Weissenberg number up to. The incompressible flow equations are coupled with the evolution equation for the …
The flow of three non-Newtonian fluids, comprising polymer and surfactant additives, in a periodically constricted tube (PCT) are experimentally compared. The radius of the tube …
H Teng, N Liu, X Lu, B Khomami - Journal of Fluid Mechanics, 2018 - cambridge.org
Drag reduction (DR) in plane Couette flow (PCF) induced by the addition of flexible polymers has been studied via direct numerical simulation (DNS). The similarities and …
Interface-resolved direct numerical simulations are performed to examine the combined effects of soluble surfactant and viscoelasticity on the structure of a bubbly turbulent channel …