CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Main CFD Forum

varying the viscosity of the fluid in a Lattice-Boltzmann simulation

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 29, 2019, 06:50
Unhappy varying the viscosity of the fluid in a Lattice-Boltzmann simulation
  #1
New Member
 
Rioual
Join Date: Apr 2019
Location: Paris
Posts: 1
Rep Power: 0
frioual is on a distinguished road
Send a message via AIM to frioual Send a message via MSN to frioual Send a message via Yahoo to frioual
Hello,

I am quite new using Lattice-Boltzmann methods for solving fluid dynamics
(I am using LB3D).
I would like to vary the dynamic viscosity of my fluid. In LB simulations, kinematic viscosity is directly connected to the relaxation time scale chosen
normally as a constant equal to 1.
The density of fluid is introduced through a parameter amass_r corresponding (as presented) to the mass of fluid and its value is usually chosen as equal to 1.
What is the connection between this parameter amass_r and the physical
mass density of the fluid ?
How can I practically vary the dynamic viscosity of my fluid with LB methods ??

Thank you very much for your answers,

Best wishes

Fr.
frioual is offline   Reply With Quote

Reply

Tags
fluid viscosity, lattice-boltzmann

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
Temporal and Spatial Varying Data for pre-simulation and actual simulation ssmeherk OpenFOAM Running, Solving & CFD 0 April 24, 2018 09:34
Difficulty in calculating angular velocity of Savonius turbine simulation alfaruk CFX 14 March 17, 2017 07:08
Wrong multiphase flow at rotating interface Sanyo CFX 14 February 7, 2017 18:19
Wrong flow in ratating domain problem Sanyo CFX 17 August 15, 2015 07:20
variable density in single fluid simulation not running with total energy viking CFX 2 September 18, 2012 21:19


All times are GMT -4. The time now is 11:53.