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Birth and growth of a granular jet

Royer, John R ; Corwin, Eric I ; Conyers, Bryan ; Flior, Andrew ; Rivers, Mark L ; Eng, Peter J ; Jaeger, Heinrich M

Physical review. E, Statistical, nonlinear, and soft matter physics, July 2008, Vol.78(1 Pt 1), pp.011305 [Tạp chí có phản biện]

ISSN: 1539-3755 ; PMID: 18763946 Version:1

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  • Nhan đề:
    Birth and growth of a granular jet
  • Tác giả: Royer, John R ; Corwin, Eric I ; Conyers, Bryan ; Flior, Andrew ; Rivers, Mark L ; Eng, Peter J ; Jaeger, Heinrich M
  • Chủ đề: Engineeringgranular Materials ; Solids Flow ; Impact Shock ; Permeability ; Sand ; Jets ; X-Ray Radiography ; Gases ; Compressible Flow ; Incompressible Flow
  • Là 1 phần của: Physical review. E, Statistical, nonlinear, and soft matter physics, July 2008, Vol.78(1 Pt 1), pp.011305
  • Mô tả: The interaction between fine grains and the surrounding interstitial gas in a granular bed can lead to qualitatively new phenomena not captured in a simple, single-fluid model of granular flows. This is demonstrated by the granular jet formed by the impact of a solid sphere into a bed of loose, fine sand. Unlike jets formed by impact in fluids, this jet is actually composed of two separate components, an initial thin jet formed by the collapse of the cavity left by the impacting object stacked on top of a second, thicker jet which depends strongly on the ambient gas pressure. This complex structure is the result of an interplay between ambient gas, bed particles, and impacting sphere. Here we present the results of systematic experiments that combine measurements of the jet above the surface varying the release height, sphere diameter, container size, and bed material with x-ray radiography below the surface to connect the changing response of the bed to the changing structure of the jet....
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1539-3755 ; PMID: 18763946 Version:1

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