Adjustable shear stress erosion and transport flume

Patent · Tue Jan 01 00:00:00 EST 2002

OSTI ID:874938

Roberts, Jesse D ^[1]; Jepsen, Richard A ^[1]

---

1. Carlsbad, NM

A method and apparatus for measuring the total erosion rate and downstream transport of suspended and bedload sediments using an adjustable shear stress erosion and transport (ASSET) flume with a variable-depth sediment core sample. Water is forced past a variable-depth sediment core sample in a closed channel, eroding sediments, and introducing suspended and bedload sediments into the flow stream. The core sample is continuously pushed into the flow stream, while keeping the surface level with the bottom of the channel. Eroded bedload sediments are transported downstream and then gravitationally separated from the flow stream into one or more quiescent traps. The captured bedload sediments (particles and aggregates) are weighed and compared to the total mass of sediment eroded, and also to the concentration of sediments suspended in the flow stream.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): US 6494084
• OSTI ID: 874938
• Country of Publication: United States
• Language: English

Related Subjects

adjustable
shear
stress
erosion
transport
flume
method
apparatus
measuring
total
rate
downstream
suspended
bedload
sediments
asset
variable-depth
sediment
core
sample
water
forced
past
closed
channel
eroding
introducing
flow
stream
continuously
pushed
keeping
surface
level
bottom
eroded
transported
gravitationally
separated
quiescent
traps
captured
particles
aggregates
weighed
compared
mass
concentration
core sample
shear stress
/73/