CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Sediment entrainment

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   January 25, 2017, 07:35
Default Sediment entrainment
New Member
Malķ Grave
Join Date: Jan 2017
Posts: 1
Rep Power: 0
malugrave is on a distinguished road
Hi everyone,
I am trying to implement entrainment rate of sediments and bed load transport in a code developed by my research group. The code calculates the Navier-Stokes equations in the dimensionless form. My question is about the sediment concentration that appears with the entrainment rate. I donít know how to convert these values evaluated by the program (volumetric concentration) in values with dimension like a lot of papers present (kg/m≥). Actually, I canít understand very well what means this volumetric concentration. Besides the empirical entrainment rate is dimensionless and we have to multiply this value by the sediment settling velocity. Since the settling velocity depends on the fluid viscosity, the entrainment rate is highly dependent on the viscosity as well. Sometimes we change the viscosity in a way to decrease the Reynolds number (I believe everyone has already done this in your researches), and I donít know if I can do this in this case.
To clarify, I've tried to reproduce the net entrainment test case showed in page 4 of this paper:
I don't use exactly the same formulation, I am just trying to reproduce the test.

Has someone already worked with entrainment of sediments?
Thanks in advance.
malugrave is offline   Reply With Quote


entrainment, sediment concentration, sediment scour, sediment transport model

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Air entrainment model setup for spillway oajor FLOW-3D 4 November 17, 2016 12:02
sediment scour pyxbird FLOW-3D 27 March 5, 2016 13:38
Problem with suspended sediment concentration (scour model) chripasch FLOW-3D 1 November 17, 2014 12:00
Sediment Scour model mshotm2000 FLOW-3D 1 February 6, 2014 20:30
Sediment Modeling M.Rafiei FLOW-3D 1 April 25, 2013 06:03

All times are GMT -4. The time now is 09:06.