A combined DSMC/meshless technique for multiscale analysis of microfluidic filters

Ozgur Aktas, Narayana R Aluru

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A multiscale method that couples a meshless Stokes solver and a DSMC simulator is reported. The method is based on overlapped Schwarz alternating method with Dirichlet-Dirichlet type boundary conditions for domain decomposition and meshless interpolation between sub-domains. The overlap can be zero for the case of Stokes-DSMC coupling. Agreement between the coupled simulation and DSMC results is demonstrated and dependence of convergence of the coupled method on the overlap, particle weight and number of DSMC time steps between coupling iterations is investigated. It is shown that within the range of parameters studied, convergence does not depend on the length of overlap and is not effected by the increased noise in DSMC estimates. The number of time steps simulated in each DSMC iteration should be selected so that the total simulated time till convergence is close to the time constant of the DSMC subdomain.

Original languageEnglish (US)
Title of host publication2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001
EditorsM. Laudon, B. Romanowicz
Pages177-180
Number of pages4
StatePublished - 2001
Event2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001 - Hilton Head Island, SC, United States
Duration: Mar 19 2001Mar 21 2001

Other

Other2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001
CountryUnited States
CityHilton Head Island, SC
Period3/19/013/21/01

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Keywords

  • Domain decomposition
  • Meshlesh methods
  • Microfluidics
  • Multiscale methods

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Aktas, O., & Aluru, N. R. (2001). A combined DSMC/meshless technique for multiscale analysis of microfluidic filters. In M. Laudon, & B. Romanowicz (Eds.), 2001 International Conference on Modeling and Simulation of Microsystems - MSM 2001 (pp. 177-180)