Browse by Subject "Turbulent flow"

  • Bagchi, Prosenjit; Balachandar, S. (American Institute of Physics, 2003-11)
    A direct numerical simulation ~DNS! is used to study the effect of a freestream isotropic turbulent flow on the drag and lift forces on a spherical particle. The particle diameter is about 1.5–10 times the Kolmogorov ...

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  • Palmer, Jessica A. (2010-05-18)
    High-resolution particle-image velocimetry (PIV) experiments have been conducted over a fixed-bed to examine the effects of interacting barchan dunes on the flow structure. The barchan dune models were based upon an idealized ...

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  • 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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  • Bagchi, Prosenjit; Balachandar, S. (Cambridge University Press, 2004)
    The interaction of an isolated spherical particle with an isotropic turbulent flow is considered using direct numerical simulations (DNS). The particle Reynolds number is varied from about 50 to 600 and the particle ...

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  • Jones, Barclay G.; Beoletto, James A.; Meek, Charcles C.; Ostensen, Raymond J.; Robin, Ronald (University of Illinois at Urbana-Champaign. Water Resources Center, 1971-03)
    Modifications to an existing experimental system have been made and have been demonstrated to provide the required resolution and variable parameterization necessary for a detailed study of dilute particle suspensions in ...

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  • Jones, Barclay G.; Meek, Charles C. (University of Illinois at Urbana-Champaign. Water Resources Center, 1972-09)
    This work was concerned with an improved and more practical understanding of particle motion in a turbulent fluid field. It is felt that such an increased understanding has been achieved both in an analytical and in an ...

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  • Jones, Barclay G.; Howard, Neil M.; Meek, Charles C.; Tomkins, James (University of Illinois at Urbana-Champaign. Water Resources Center, 1974-12)
    Understanding the basic mechanisms and predicting the behavior of particles suspended in turbulent fluid flow are essential to environmental conservation and to multiphase system design. Air and water pollution, sedimentation ...

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  • Jones, Barclay G.; Gronager, John E. (University of Illinois at Urbana-Champaign. Water Resources Center, 1980-03)
    Increased utilization of non-dilute, solid-fluid suspensions in transporting materials and in estimating the distribution of particles from atmospheric fallout, demands that the basic fluid-particle interactions be thoroughly ...

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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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