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8120 results in Fluid dynamics and solid mechanics

Page 20 of 406

Quantum Turbulence
  • Carlo F. Barenghi, Ladislav Skrbek, Katepalli R. Sreenivasan
  • Published online:
    28 September 2023
    Print publication:
    19 October 2023
  • Turbulence plays a crucial role in contexts ranging from galaxy formation to heavy atomic nuclei, from jet engines to arterial blood flow, challenging engineers, physicists, and mathematicians. Recently, turbulence of quantum fluids displaying superfluidity has emerged as an exciting area of interdisciplinary research that spans fluid dynamics, low-temperature physics, and Bose-Einstein condensation. The first book on quantum turbulence, this work describes state-of-the-art results and techniques, stressing analogies and differences with classical turbulence. The authors focus in particular on low temperature phases of liquid helium, drawing on evidence from recent experiments, theory, and numerical simulations. Written by leading figures in the field, this is a go-to reference for students and researchers at all levels.

  • ANZ VOLUME 65 ISSUE 1-2 COVER AND FRONT MATTER

  • Journal:
    The ANZIAM Journal / Volume 65 / Issue 1-2 / January 2023
    Published online by Cambridge University Press:
    26 September 2023, pp. f1-f2
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  • EDITORIAL: SPECIAL ISSUE IN HONOUR OF PROFESSOR GRAEME HOCKING

  • ANDREW P. BASSOM, MICHAEL H. MEYLAN
  • Journal:
    The ANZIAM Journal / Volume 65 / Issue 1-2 / January 2023
    Published online by Cambridge University Press:
    26 September 2023, pp. 1-2
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  • ANZ VOLUME 65 ISSUE 1-2 COVER AND BACK MATTER

  • Journal:
    The ANZIAM Journal / Volume 65 / Issue 1-2 / January 2023
    Published online by Cambridge University Press:
    26 September 2023, pp. b1-b8
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  • ANZ VOLUME 64 ISSUE 4 COVER AND BACK MATTER

  • Journal:
    The ANZIAM Journal / Volume 64 / Issue 4 / October 2022
    Published online by Cambridge University Press:
    07 September 2023, pp. b1-b5
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  • ANZ VOLUME 64 ISSUE 4 COVER AND FRONT MATTER

  • Journal:
    The ANZIAM Journal / Volume 64 / Issue 4 / October 2022
    Published online by Cambridge University Press:
    07 September 2023, pp. f1-f2
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  • WALL STABILIZATION IN MINES BY SPRAY-ON LINERS

  • Part of
  • D. P. MASON, N. D. FOWKES, R. M. YEMATA, C. A ONYEAGOZIRI, H. YILMAZ
  • Journal:
    The ANZIAM Journal / Volume 65 / Issue 1-2 / January 2023
    Published online by Cambridge University Press:
    31 August 2023, pp. 55-78

  • Thin spray-on liners (TSLs) have been found to be effective for structurally supporting the walls of mining tunnels and thus reducing the occurrence of rock bursts, an effect primarily due to the penetration of cracks by the liner. Surface tension effects are thus important. However, TSLs are also used to simply stabilize rock surfaces, for example, to prevent rock fall, and in this context crack penetration is desirable but not necessary, and the tensile and shearing strength and adhesive properties of the liner determine its effectiveness. We examine the effectiveness of nonpenetrating TSLs in a global lined tunnel and in a local rock support context. In the tunnel context, we examine the effect of the liner on the stress distribution in a tunnel subjected to a geological or mining event. We show that the liner has little effect on stresses in the surrounding rock and that tensile stresses in the rock surface are transmitted across the liner, so that failure is likely to be due to liner rupture or detachment from the surface. In the local rock support context, loose rock movements are shown to be better achieved using a liner with small Young’s modulus, but high rupture strength.

  • NUMERICAL ANALYSIS OF APPARATUS-INDUCED DISPERSION FOR DENSITY-DEPENDENT SOLUTE TRANSPORT IN POROUS MEDIA

  • Part of
  • H. ZHANG, D. A. BARRY, B. SEYMOUR, G. HOCKING
  • Journal:
    The ANZIAM Journal / Volume 65 / Issue 1-2 / January 2023
    Published online by Cambridge University Press:
    31 August 2023, pp. 178-194
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  • The effects of apparatus-induced dispersion on nonuniform, density-dependent flow in a cylindrical soil column were investigated using a finite-element model. To validate the model, the results with an analytical solution and laboratory column test data were analysed. The model simulations confirmed that flow nonuniformities induced by the apparatus are dissipated within the column when the distance to the apparatus outlet exceeds $3R/2$, where R represents the radius of the cylindrical column. Furthermore, the simulations revealed that convergent flow in the vicinity of the outlet introduces additional hydrodynamic dispersion in the soil column apparatus. However, this effect is minimal in the region where the column height exceeds $3R/2$. Additionally, it is found that an increase in the solution density gradient during the solute breakthrough period led to a decrease in flow velocity, which stabilized the flow and ultimately reduced dispersive mixing. Overall, this study provides insights into the behaviour of apparatus-induced dispersion in nonuniform, density-dependent flow within a cylindrical soil column, shedding light on the dynamics and mitigation of flow nonuniformities and dispersive mixing phenomena.

Page 20 of 406