Shear-weakening of the transitional regime for granular flow

  title={Shear-weakening of the transitional regime for granular flow},
  author={Kevin Lu and E. Brodsky and H. Kavehpour},
  journal={Journal of Fluid Mechanics},
  • Kevin Lu, E. Brodsky, H. Kavehpour
  • Published 2007
  • Materials Science
  • Journal of Fluid Mechanics
  • (Received 6 September 2006 and in revised form 11 May 2007) This paper experimentally investigates the rheology of dense granular flow through its solid-like to fluid-like transition. Between the well-established flow regimes ‐ quasi-static and grain-inertial ‐ the physical description of the transition remains elusive. Our experiment uses a top-rotating torsional shear cell capable of ±1µm accuracy in height and 5 decades (10 "3 " 100rads "1 ) in rotation rate. The data on beach sand shows… CONTINUE READING
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