Browse Published Papers - Theoretical and Applied Mechanics (TAM) by Author "Gioia, Gustavo"

  • Gioia, Gustavo; Bombardelli, Fabian A. (American Physical Society, 2005)
    In many applications a sustained, localized turbulent flow scours a cohesionless granular bed to form a pothole. Here we use similarity methods to derive a theoretical formula for the equilibrium depth of the pothole. ...

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  • Hill, Kimberly M.; Gioia, Gustavo; Amaravadi, Deepak R. (American Physical Society, 2004-11)
    We model the radial segregation patterns that form in a thin rotating drum partially filled with beads of two sizes. We predict that the waviness (or amplitude-to-wavelength ratio, denoted w) of a pattern should be subjected ...

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  • Hill, Kimberly M.; Gioia, Gustavo; Tota, Vinay V. (American Physical Society, 2003)
    We show that the structure of a dense, free-surface boundary layer granular flow is similar to the structure of a laminar liquid flow: There is a strong component of order (stratification parallel to the mean flow) ...

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  • Gioia, Gustavo; Chakraborty, Pinaki (American Physical Society, 2006)
    The classical experiments on turbulent friction in rough pipes were performed by Nikuradse in the 1930s. Seventy years later, they continue to defy theory. Here we model Nikuradse’s experiments using the phenomenological ...

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  • Gioia, Gustavo; Cuitiño, Alberto M.; Zheng, S.; Uribe, T. (American Physical Society, 2002)
    When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressure is applied to these aggregates, they densify by particle rearrangement. Here we introduce experimental and ...

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