Particle pairs and trains in inertial microfluidics
| dc.contributor.author | Schaaf, Christian | |
| dc.contributor.author | Stark, Holger | |
| dc.date.accessioned | 2021-03-15T11:15:53Z | |
| dc.date.available | 2021-03-15T11:15:53Z | |
| dc.date.issued | 2020-08-04 | |
| dc.description.abstract | Staggered and linear multi-particle trains constitute characteristic structures in inertial microfluidics. Using lattice-Boltzmann simulations, we investigate their properties and stability, when flowing through microfluidic channels. We confirm the stability of cross-streamline pairs by showing how they contract or expand to their equilibrium axial distance. In contrast, same-streamline pairs quickly expand to a characteristic separation but even at long times slowly drift apart. We reproduce the distribution of particle distances with its characteristic peak as measured in experiments. Staggered multi-particle trains initialized with an axial particle spacing larger than the equilibrium distance contract non-uniformly due to collective drag reduction. Linear particle trains, similar to pairs, rapidly expand toward a value about twice the equilibrium distance of staggered trains and then very slowly drift apart non-uniformly. Again, we reproduce the statistics of particle distances and the characteristic peak observed in experiments. Finally, we thoroughly analyze the damped displacement pulse traveling as a microfluidic phonon through a staggered train and show how a defect strongly damps its propagation. | en |
| dc.description.sponsorship | TU Berlin, Open-Access-Mittel – 2020 | en |
| dc.identifier.eissn | 1292-895X | |
| dc.identifier.issn | 1292-8941 | |
| dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/12840 | |
| dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-11640 | |
| dc.language.iso | en | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject.ddc | 530 Physik | en |
| dc.subject.other | flowing matter | en |
| dc.subject.other | nonlinear physics | en |
| dc.subject.other | mesoscale modeling | en |
| dc.subject.other | particle pairs | en |
| dc.subject.other | microfluidics | en |
| dc.title | Particle pairs and trains in inertial microfluidics | en |
| dc.type | Article | en |
| dc.type.version | publishedVersion | en |
| dcterms.bibliographicCitation.articlenumber | 50 | en |
| dcterms.bibliographicCitation.doi | 10.1140/epje/i2020-11975-6 | en |
| dcterms.bibliographicCitation.issue | 8 | en |
| dcterms.bibliographicCitation.journaltitle | The European Physical Journal E | en |
| dcterms.bibliographicCitation.originalpublishername | SpringerNature | en |
| dcterms.bibliographicCitation.originalpublisherplace | London [u.a.] | en |
| dcterms.bibliographicCitation.volume | 43 | en |
| tub.accessrights.dnb | free | en |
| tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Theoretische Physik::FG Statistische Physik weicher Materie und biologischer Systeme | de |
| tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
| tub.affiliation.group | FG Statistische Physik weicher Materie und biologischer Systeme | de |
| tub.affiliation.institute | Inst. Theoretische Physik | de |
| tub.publisher.universityorinstitution | Technische Universität Berlin | en |
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