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27002 access since 10 Aug 2009, 3 online now

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Welcome to KAPSEL Homepage †

An Open Software for Direct Numerical Simulations of Particle Dispersions

____Electro-Hydrodynamics________________Rheology________________________Micro-Fluidics

What is KAPSEL? †

• KAPSEL means Kyoto Advanced Particle Simulator for Electro-hydrodynamics based on a direct numerical simulation method for colloidal dispersions called SPM (Smoothed Profile Method). KAPSEL is designed to simulate dynamics of solid particles dispersed in simple and complex fluids. KAPSEL enables us to simulate complex rheological properties of colloidal dispersions, electrophoresis of charged colloids, etc.

• KAPSEL-2 is the latest version of KAPSEL. It can introduce thermal fluctuations to the system and also perform rheology simulations under steady or oscillatory shear flow, which has a zigzag-profile being fully compatible with usual periodic boundary condition. Computational efficiency is also much improved from the original version so that one can simulate larger systems.
  

• KAPSEL is a software free to use. To download and use KAPSEL, one must register for a member of KAPSEL-BBS and read the "License agreement of KAPSEL".

NEWS †

• KAPSEL-2
  • [19 Aug 2009] Click here to see sedimentation of 100,000 particles with HI.

• [19 Aug 2009] KAPSEL-2.00 release

• [04 Aug 2009] KAPSEL-2.beta pre-release

• [10 Aug 2009] KAPSEL Homepage renewal open.

• KAPSEL
  • [19 Jan 2007] English manual (for KAPSEL version 1) published on-line.

• [31 May 2006] KAPSEL released.

Related Papers †

• Simulation method & algorithm
  • Yasuya Nakayama, Kang Kim and Ryoichi Yamamoto, "Simulating (electro) hydrodynamic effects in colloidal dispersions: smoothed profile method",
    Eur. Phys. J. E, 26, 361-368 (2008).

• T. Iwashita, Y. Nakayama, and R. Yamamoto, "A numerical model for Brownian particles fluctuating in incompressible fluids",
  J. Phys. Soc. Jpn., 77, 074007, (2008).

• X. Luoa, M. R. Maxeya, and G. E. Karniadakis, "Smoothed Profile Method for Particulate Flows: Error Analysis and Simulations",
  Journal of Computational Physics, 228, 1750-1769 (2009).

• Diffusion in incompressible fluid
  • T. Iwashita and R. Yamamoto, "Short-time motion of Brownian particles in a shear flow",
    Phys. Rev. E, 79, 031401 (2009).

• Electrophoresis
  • K. Kim, Y. Nakayama, and R. Yamamoto, "Direct Numerical Simulations of Electrophoresis of Charged Colloids",
    Phys. Rev. Lett., 96, 208306 (2006).

• Colloids in liquid crystal
  • R. Yamamoto, "Simulating particle dispersions in nematic liquid-crystal solvents",
    Phys. Rev. Lett., 87, 075502 (2001).