Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Turbulence Modulation"”.
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Multiscale environmental flow dynamics: particle settling, turbulence modulation, and tornadic vortices
… and initial arrangement. The second study probes turbulence modulation in wall‑bounded flows laden with dilute polymeric and clay suspensions. Even trace concentrations of Xanthan gum or Laponite attenuate high‑wavenumber fluctuations and substantially reduce wall shear stress. The clay suspension …
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Turbulence Modulation of Polydisperse Particles in a Square Particle-Laden Jet: Numerical Investigation
… of this study is to numerically investigate the turbulence modulation of polydisperse particles in a square particle-laden jet. Turbulence modulation describes the effects of fluctuating velocity and intensity when the particles and continuous fluid interact in a turbulent flow field. The rate at …
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Bridging gaps between numerical and physical modeling of aquatic vegetation: experimental bias, near-bed hydrodynamics, and sediment-induced turbulence modulation
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Interaction Between a Spherical Particle and Wall -Bounded Flows at Finite Reynolds Number
… center can be considered as nearly isotropic turbulence. We compare the computed forces with the standard force formulations and analyze possible mechanisms for their deviations. Further, we analyze the back effects that the particle imposes on the turbulence field---in particular, the wake …
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Operation Mode Transitions in a Heaterless Hollow Cathode
… to the plume mode instability and ion acoustic turbulence modulation.
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Multiphase Flow Dynamics in Confined Domains—A DNS Study of Bubbly, Thermal and Riblet-Induced Turbulence
… fundamental mechanisms governing heat transfer, turbulence modulation, and instability-driven transition. By systematically studying three canonical configurations—liquid–liquid emulsions in Rayleigh–Bénard convection, buoyancy-driven bubbly flows in vertical channels, and channel flows over …
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Particle Dynamics in Inhomogeneous Flow at Moderate to High Reynolds Number
… migration in a vortex. (d) Particle-turbulence interaction: We perform DNS of a particle subjected to an isotropic turbulent flow. We explore different estimates of the mean and instantaneous drag and compare them with the DNS results. The mean and instantaneous wake structure, wake …
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Computational fluid dynamics (CFD) modelling of critical velocity for sand transport flow regimes in multiphase pipe bends.
… method in a CFD code software. The liquid phase turbulence has been modelled using a two-equation k - epsilon turbulence model, which contains additional terms to account for the effects of the solid-particles phase on the multiphase turbulence structure. The developed CFD numerical framework has …
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NUMERICAL ANALYSIS OF TURBULENT GAS-SOLID FLOWS IN A ROUGH HORIZONTAL CHANNEL USING THE EULERIAN TWO-FLUID MODEL
… energized the particles present in the flow via turbulence modulation. Wall roughness alters the particle-wall interactions. The particle-wall interactions were characterized using the boundary conditions of Johnson and Jackson (1987), which defined the specularity coefficient. The second study …