High resolution simulations of particle-driven gravity currents

Eckart Meiburg*, F. Blanchette, M. Strauss, B. Kneller, M. E. Glinsky, F. Necker, C. Härtel, L. Kleiser

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

High-resolution simulations of particle-driven gravity currents are presented. The study concentrates on dilute flows with small density differences between particle-laden and clear fluid. Moreover, particles are considered which have negligible inertia, and which are much smaller than the smallest length scales of the buoyancy-induced fluid motion. The governing equations are integrated numerically with a high-order mixed spectral/spectral-element technique. In the analysis of the results, special emphasis is placed on the sedimentation and resuspension of the particles, and on their feedback on the flow dynamics. Resuspension is modeled as a diffusive flux of particles through the bottom boundary. The conditions under which turbidity currents may become self-sustaining through panicle entrainment are investigated as a function of slope angle, current and particle size, and particle concentration.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Pages381-390
Number of pages10
Volume261 FED
DOIs
Publication statusPublished - 1 Dec 2005
Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
Duration: 5 Nov 200511 Nov 2005

Conference

Conference2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
CountryUnited States
CityOrlando, FL
Period5/11/0511/11/05

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