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Flow and clay erosion data taken and processed at SAFL in a grid-turbulence tank Fall 2021-Spring 2022

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2021-11-04
2022-01-20

Date completed

2022-01-20

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Flow and clay erosion data taken and processed at SAFL in a grid-turbulence tank Fall 2021-Spring 2022

Published Date

2022-05-23

Author Contact

San Juan, Jorge E
jsanjuan@umn.edu

Type

Dataset

Abstract

Here we present a data set containing raw imaging and processed data of clay erosion and near-bed turbulence. This data set supports our study of the impact of salinity and consolidation on the microstructure and erosion threshold of cohesive sediments. The flow and erosion measurements were taken inside a grid-turbulence tank at the St. Anthony Falls Laboratory at the University of Minnesota Twin Cities. We set up the water salinity at a prescribed concentration in part-per-thousands and two clay consolidation conditions (unconsolidated and consolidated after 17 hours) for each experimental case. Here we incorporate detailed near-bed turbulence measurements to quantify the erosive effect of the turbulent water flow. We also include laponite (smectite clay)'s surface erosion from laser-induced fluorescence and image processing.

Description

The raw data consists of fluorescence-labeled clay's surface and raw confocal microscopy imaging of the clay dispersion (clay microstructures). The processed data includes: (i) spatial-averaged turbulent kinetic energy, (ii) Reynolds stresses, (iii) time series of image structural-similarity index for clay erosion. We release this data set to make it available for understanding, evaluating, and building upon our reported research.

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San Juan, Jorge E; Wei, William G; Yang, Judy Q. (2022). Flow and clay erosion data taken and processed at SAFL in a grid-turbulence tank Fall 2021-Spring 2022. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/vxrv-7e20.

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Description
Size
confocal_microscopy.zip
Confocal images of clay dispersions
(46.89 MB)

cons_0p010M_rep04.zip
Consolidated clay bed's surface images (4,817 files, 16 folders)
(3.35 GB)

uncons_0p010M_rep03.zip
Unconsolidated clay bed's surface images (4,818 files, 16 folders)
(3.56 GB)

mean_structural_similarity.zip
Mean structural similarity index (ssim)
(8.95 KB)

rpm-vs-kt.txt
Spatial-averaged turbulent kinetic energy (kt) produced near the bed of the turbulence tank
(392 B)

rpm-vs-uw.txt
Spatial-averaged Reynolds stress u'w' (u'w') produced near the bed of the turbulence tank
(388 B)

salinity-vs-kcrit_cons.txt
Critical turbulent kinetic energy (kcrit) for consolidated clay erosion
(265 B)

salinity-vs-kcrit_uncons.txt
Critical turbulent kinetic energy (kcrit) for unconsolidated clay erosion
(271 B)

salinity-vs-taucrit_cons.txt
Critical bed shear stress (taucrit) for consolidated clay erosion
(277 B)

salinity-vs-taucrit_uncons.txt
Critical bed shear stress (taucrit) for unconsolidated clay erosion
(283 B)

2d_turbulent_kinetic_energy.zip
2-dimensional turbulent kinetic energy field near the bed inside a grid-turbulence tank
(706.3 KB)

2d_Reynolds_stress_uw.zip
2-dimensional Reynolds stress field u'w' near the bed inside a grid-turbulence tank
(710.16 KB)

luminance_diff_cons_0p005M_rep03.txt
2-dimensional field of luminance difference between consolidated clay's surface initial condition and the its final eroded condition at ionic strength 0.005 M
(8.82 MB)

luminance_diff_cons_0p030M_rep02.txt
2-dimensional field of luminance difference between consolidated clay's surface initial condition and the its final eroded condition at ionic strength 0.030 M
(5.45 MB)

2022_Flow and Erosion Data_Readme.txt
Description of data
(19.44 KB)

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