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Naslov:A novel pseudo-rigid body approach to the non-linear dynamics of soft micro-particles in dilute viscous flow
Avtorji:ID Wedel, Jana (Avtor)
ID Hriberšek, Matjaž (Avtor)
ID Ravnik, Jure (Avtor)
ID Steinmann, Paul (Avtor)
Datoteke:.pdf 1-s2.0-S0021999124006259-main.pdf (2,18 MB)
MD5: 2B3E6D557B10E6DA5B01A33851400FDE
 
URL https://www.sciencedirect.com/science/article/pii/S0021999124006259?via%3Dihub
 
Jezik:Angleški jezik
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:We propose a novel, demonstrably effective, utmost versatile and computationally highly efficient pseudo-rigid body approach for tracking the barycenter and shape dynamics of soft, i.e. nonlinearly deformable micro-particles dilutely suspended in viscous flow. Pseudo-rigid bodies are characterized by affine deformation and thus represent a first-order extension to the kinematics of rigid bodies. Soft particles in viscous flow are ubiquitous in nature and sciences, prominent examples, among others, are cells, vesicles or bacteria. Typically, soft particles deform severely due to the mechanical loads exerted by the fluid flow. Since the shape dynamics of a soft particle - a terminology that shall here also include its orientation dynamics - also affects its barycenter dynamics, the resulting particle trajectory as a consequence is markedly altered as compared to a rigid particle. Here, we consider soft micro-particles of initially spherical shape that affinely deform into an ellipsoidal shape. These kinematic conditions are commensurate with i) the affine deformation assumption inherent to a pseudo-rigid body and ii) the celebrated Jeffery-Roscoe model for the traction exerted on an ellipsoidal particle due to creeping flow conditions around the particle. Without loss of generality, we here focus on non-linear hyperelastic particles for the sake of demonstration. Our novel numerical approach proves to accurately capture the particular deformation pattern of soft particles in viscous flow, such as for example tank-treading, thereby being completely general regarding the flow conditions at the macro-scale and, as an option, the constitutive behavior of the particle. Moreover, our computational method is highly efficient and allows straightforward integration into established Lagrangian tracking algorithms as employed for the point-particle approach to track rigid particles in dilute viscous flow.
Ključne besede:soft particles, pseudo-rigid bodies, Barycenter and shape dynamics, Lagrangian particle tracking
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Poslano v recenzijo:13.08.2024
Datum sprejetja članka:23.08.2024
Datum objave:09.09.2024
Založnik:Elsevier
Leto izida:2024
Št. strani:24 str.
Številčenje:Vol. 519, [article no.] 113377
PID:20.500.12556/DKUM-90755 Novo okno
UDK:532:519.6
COBISS.SI-ID:208073731 Novo okno
DOI:10.1016/j.jcp.2024.113377 Novo okno
ISSN pri članku:1090-2716
Datum objave v DKUM:19.09.2024
Število ogledov:0
Število prenosov:13
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
WEDEL, Jana, HRIBERŠEK, Matjaž, RAVNIK, Jure in STEINMANN, Paul, 2024, A novel pseudo-rigid body approach to the non-linear dynamics of soft micro-particles in dilute viscous flow. Journal of computational physics [na spletu]. 2024. Vol. 519, no. 113377. [Dostopano 14 marec 2025]. DOI 10.1016/j.jcp.2024.113377. Pridobljeno s: https://dk.um.si/IzpisGradiva.php?lang=slv&id=90755
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Gradivo je del revije

Naslov:Journal of computational physics
Skrajšan naslov:J. comput. phys.
Založnik:Academic Press, Elsevier
ISSN:1090-2716
COBISS.SI-ID:18272039 Novo okno

Gradivo je financirano iz projekta

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P2-0196-2020
Naslov:Raziskave v energetskem, procesnem in okoljskem inženirstvu

Licence

Licenca:CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc/4.0/deed.sl
Opis:Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:mehki delci, psevdotogo telo, baricenter, dinamika obliike, Lagrangevo sledenje delcev


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