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Blend Tool Design using CFD

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A method to utilize computational fluid dynamics (CFD) as a modeling tool to predict the mixing blend tool dynamics is presented. Blender and various tool geometries have been analyzed and computational grids have been created using commercially available CFD software. Simulations have been performed at various rotational tool speeds, treating the toner particle in air as a pseudo-homogenous single phase fluid while utilizing the K-ω turbulence model for the strongly swirling flow pattern. In addition to flow observations, the total moment of the tool surfaces and tool wall shear stress have also been measured as critical blending parameters. The tool area weighted average shear stress and integral tool shear stress have been found to respond to the various tool configuration simulated, suggesting that certain tool configurations have an increased blending functional efficiency for additive distribution and attachment.
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Document Type: Research Article

Publication date: 2008-01-01

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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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