Smoothed-Particle Hydrodynamic Simulations of Viscous Fluid Flow
Abstract: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.
Document Type: Research Article
Publication date: January 1, 2010
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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