Related Experiment Video
Updated: Mar 26, 2026

Image-based Lagrangian Particle Tracking in Bed-load Experiments
Published on: July 20, 2017
[Mass Transport in Porous Sediments During a Turbulent Disturbance]
Abstract:
To examine mass transport in porous sediments during a turbulent flow, we established a simple sediment re-suspension device, made use of different sizes of sands as homogeneous sediments, and we injected 500 μg x cm(-3) soluble Rhodamine B into different parts of the sediment as the mass tracer, to observe mass transport during the turbulent condition. The research showed that in porous sediments, pore-water pressure difference would be generated because of the sediments' distinctive porosity and permeability, and further led to the convective flow and mass transport in porous media. Moreover, such mass transport was directly influenced by its burial depth and particle size of the sediment. While in homogeneous sediments, mass transport was strongly influenced in vertical direction under 200 r x min(-1) disturbance, and when moderately increased the size of porous particles under the same turbulent condition, such convection of pore-water would relatively enhance.
More Related Videos
11:51Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
12:32Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales
Published on: November 25, 2020
Related Concept Videos
Turbulent Flow
Deep Sea Microbial Ecology
Carrier Transport
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Marine Microbial Ecology
Transport Number