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Smoothed-Particle Hydrodynamic Simulations of Viscous Fluid Flow

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The “Xerox Particle Simulation Environment” (XPSE) computer codes have been extended to enable three-dimensional fluid-flow simulations based on the Smoothed-Particle Hydrodynamic (SPH) technique. Individual ink drops (e.g., from an inkjet print head) or molten toner particles are discretized into several thousand small fluid elements. Each element samples localized material properties, such as volume mass density and temperature, averaged over a small region of space. Forces are computed on each element, which are then moved in accordance with the laws of Newtonian mechanics. The result is a time-dependent three-dimensional simulation of fluid flow including free-surface effects, self-consistent temperature and viscosity, and diffusion into porous media (e.g., paper). Multiple material types, such as different colored inks or toners, can be handled within the same simulation. Examples are drawn from early numerical experiments relating to the microscopic flow of gel-like materials.
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Document Type: Research Article

Publication date: 2010-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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