Fluid Mixing from Viscous Fingering

Details Fluid Mixing from Viscous Fingering Fluid Mixing from Viscous Fingering

2010-10-19

arxiv.org/abs/1010.3780v3

Physical Review Letters, 106(19), 194502 (2011)

Physics

Fluid Dynamics

Fluid dynamics video is included

Scientific paper

10.1103/PhysRevLett.106.194502

Viscous fingering is a well-known hydrodynamic instability that sets in when a less viscous fluid displaces a more viscous fluid. When the two fluids are miscible, viscous fingering introduces disorder in the velocity field and exerts a fundamental control on the rate at which the fluids mix. We present a fluid dynamics video of the mixing process in a viscously unstable flow, generated from a high-resolution numerical simulation using a computational strategy that is stable for arbitrary viscosity ratios. We develop a two-equation dynamic model of concentration variance and mean dissipation rate to quantify the degree of mixing in such a displacement process. The model reproduces accurately the evolution of these two quantities as observed in high-resolution numerical simulations and captures the nontrivial interplay between channeling and creation of interfacial area as a result of viscous fingering.

Affiliated with

Also associated with

No associations

Rating

Fluid Mixing from Viscous Fingering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fluid Mixing from Viscous Fingering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid Mixing from Viscous Fingering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-268042