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IUTAM Symposium on Computational Approaches to Multiphase Flow pp 119–129Cite as

Fluctuating Immersed Material (FIMAT) Dynamics for the Direct Simulation of the Brownian Motion of Particles

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Part of the book series: Fluid Mechanics and Its Applications ((FMIA,volume 81))

Abstract

In the paper a Direct Numerical Simulation (DNS) scheme, named Fluctuating Immersed MATerial (FIMAT) dynamics, for the Brownian motion of particles is presented. In this approach the thermal fluctuations are included in the fluid equations via random stress terms. Solving the fluctuating hydrodynamic equations coupled with the particle equations of motion results in the Brownian motion of the particles. There is no need to add a random force term in the particle equations. The particles acquire random motion through the hydrodynamic force acting on its surface from the surrounding fluctuating fluid. The random stresses in the fluid equations are easy to calculate unlike the random terms in the conventional Brownian Dynamics (BD) type approaches.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA

    Yong Chen, Nitin Sharma & Neelesh A. Patankar

Authors
  1. Yong Chen
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  2. Nitin Sharma
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  3. Neelesh A. Patankar
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Editor information

Editors and Affiliations

  1. University of Florida, Gainesville, Florida, USA

    S. Balachandar

  2. The Johns Hopkins University, Baltimore, Maryland, USA

    A. Prosperetti

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© 2006 Springer

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Chen, Y., Sharma, N., Patankar, N.A. (2006). Fluctuating Immersed Material (FIMAT) Dynamics for the Direct Simulation of the Brownian Motion of Particles. In: Balachandar, S., Prosperetti, A. (eds) IUTAM Symposium on Computational Approaches to Multiphase Flow. Fluid Mechanics and Its Applications, vol 81. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4977-3_13

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  • DOI: https://doi.org/10.1007/1-4020-4977-3_13

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-1-4020-4976-7

  • Online ISBN: 978-1-4020-4977-4

  • eBook Packages: EngineeringEngineering (R0)

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