Name
Abstract | ||
|---|---|---|
In this work, we describe a simulation framework for fluid movement in a corrugated sawtooth channel whose walls are undergoing periodic repeated oscillations. The sawtooth geometry of the channel walls creates a fluid ratchet by generating an anisotropy in the fluid impedance. The simulations are developed using an immersed boundary method, and we present numerical results for both Newtonian and non-Newtonian fluids. These results are in agreement with physical studies of ratchets in the literature and with general flow behaviors expected for non-Newtonian fluids. In particular, we find enhanced mean flow rates for non-Newtonian fluids up to a critical value of the Weissenberg number. Existence of such a critical value has been shown for non-Newtonian flows in other environments, but has not been explored computationally for fluid ratchets. We also provide results which highlight the difference in movement of ratcheted non-Newtonian versus Newtonian fluids. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.1016/j.matcom.2021.04.021 | Mathematics and Computers in Simulation |
Keywords | DocType | Volume |
Ratchet,Viscoelsatic,Immersed boundary | Journal | 188 |
ISSN | Citations | PageRank |
0378-4754 | 0 | 0.34 |
References | Authors | |
0 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| J.C. Chrispell | 1 | 0 | 0.34 |
| E.W. Jenkins | 2 | 0 | 0.34 |
| P. Westerbaan | 3 | 0 | 0.34 |