Aquatic Sciences Meeting, Albuquerque 2001

SS08 Processes at the Benthic Interface (Environmental Connections)

Date: Wednesday, February 14, 2001, Time: 9:45:00 AM

Location: Ruidoso/Pecos

Khalili, A, , Max Planck Institute for Marine Microbiology, Bremen, Germany, arzhang@khayam.mpi-bremen.de

MODELING OF FLOW INTERACTIONS AT BENTHIC INTERFACES

Studying the physics of flow through seabeds and the interaction between the seawater and porewater is essential for understanding many problems in marine microbiology. In these environments, velocity of the fluid is often a function of time and space, and the sediment porosity and permeability may also change spatially. In addition, it is not always easy to carry-out in-situ velocity measurements and flow visualizations. Under these circumstances, a hydrodynamic flow model can be of great help. In the present study, the author has developed a single-domain approach to calculate the flow exchange processes at a benthic interface. A single set of differential equations is used to describe the flow in the sediment and the overlying fluid layer. To validate the results of the numerical simulations, experimental flow visualizations and measurements were conducted with particle image velocimetry (PIV) and positron emission tomography (PET). The theoretical and experimental results were found to be in good agreement.

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Aquatic Sciences Meeting, Albuquerque 2001

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