Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Stochastic semi-Lagrangian micro-macro calculations of liquid crystalline solutions in complex flows
Year:2010
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
A general method for the simulation of complex flows of liquid crystalline polymers (LCPs) using a stochastic semi-Lagrangian micro¿macro method is introduced. The macroscopic part uses a spatial-temporal second order accurate semi-Lagrangian algorithm, where ideas from the finite element and natural element methods are mixed in order to compute average quantities. The microscopic part employs a stochastic interpretation of the Doi¿Hess LCP model, which is discretized with a second order Richardson extrapolated Euler¿Maruyama scheme. The new method is validated and tested using the benchmark problem of flow between rotating eccentric cylinders. In a decoupled analysis, a discussion on the sensibility of the scalar order parameter to the macroscopic flowis offered. For the coupled situation, the proposed method predicts disclinations at certain regions of the geometry, as well as an accentuated abatement of the flow as the strength of the micro¿macro interaction increases. Further examples are provided at different Peclet and concentration numbers to gain insight on the behavior of complex flows of LCPs in the eccentric cylinder geometry. The generality and robustness of the method, as well as its accurate prediction of LCP behavior under complex flows are main features of the implementation.
International
Si
JCR
Si
Title
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
ISBN
0377-0257
Impact factor JCR
2
Impact info
Volume
165
doi:10.1016/j.jnnfm.2009.11.002
Journal number
5-6
From page
185
To page
195
Month
MARZO
Ranking
Participants
  • Autor: Juan Luis Prieto Ortiz (UPM)
  • Autor: Patrick Ilg (ETH Zürich)
  • Autor: Rodolfo Bermejo Bermejo (UPM)
  • Autor: Manuel Laso Carbajo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Mecánica de fluidos aplicada a la Ingeniería Industrial
  • Departamento: Matemática Aplicada a la Ingeniería Industrial
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)