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Title: Oscillatory erosion and transport flume with superimposed unidirectional flow

Abstract

A method and apparatus for measuring erosion rates of sediments and at high shear stresses due to complex wave action with, or without, a superimposed unidirectional current. Water is forced in a channel past an exposed sediment core sample, which erodes sediments when a critical shear stress has been exceeded. The height of the core sample is adjusted during testing so that the sediment surface remains level with the bottom of the channel as the sediments erode. Complex wave action is simulated by driving tandom piston/cylinder mechanisms with computer-controlled stepper motors. Unidirectional flow, forced by a head difference between two open tanks attached to each end of the channel, may be superimposed on to the complex wave action. Sediment traps may be used to collect bedload sediments. The total erosion rate equals the change in height of the sediment core sample divided by a fixed period of time.

Inventors:
;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174689
Patent Number(s):
6679105
Application Number:
10/376,193
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 47 OTHER INSTRUMENTATION

Citation Formats

Jepsen, Richard A., and Roberts, Jesse D. Oscillatory erosion and transport flume with superimposed unidirectional flow. United States: N. p., 2004. Web.
Jepsen, Richard A., & Roberts, Jesse D. Oscillatory erosion and transport flume with superimposed unidirectional flow. United States.
Jepsen, Richard A., and Roberts, Jesse D. Tue . "Oscillatory erosion and transport flume with superimposed unidirectional flow". United States. https://www.osti.gov/servlets/purl/1174689.
@article{osti_1174689,
title = {Oscillatory erosion and transport flume with superimposed unidirectional flow},
author = {Jepsen, Richard A. and Roberts, Jesse D.},
abstractNote = {A method and apparatus for measuring erosion rates of sediments and at high shear stresses due to complex wave action with, or without, a superimposed unidirectional current. Water is forced in a channel past an exposed sediment core sample, which erodes sediments when a critical shear stress has been exceeded. The height of the core sample is adjusted during testing so that the sediment surface remains level with the bottom of the channel as the sediments erode. Complex wave action is simulated by driving tandom piston/cylinder mechanisms with computer-controlled stepper motors. Unidirectional flow, forced by a head difference between two open tanks attached to each end of the channel, may be superimposed on to the complex wave action. Sediment traps may be used to collect bedload sediments. The total erosion rate equals the change in height of the sediment core sample divided by a fixed period of time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {1}
}

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Works referenced in this record:

Effects of Bulk Density on Sediment Erosion Rates
book, January 1997


Measurements of Erosion of Undisturbed Bottom Sediments with Depth
journal, June 1996