# LBM units

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Search this Thread Display Modes
 November 21, 2018, 16:33 LBM units #1 New Member   Med oumza Join Date: Nov 2015 Posts: 4 Rep Power: 10 Dear everyone; I am using the LBM as a CFD approach for simulating the nanofluids behaviour. My question is about the lattice units to use in the method, i.e, how to convert the physical units to the lattice ones? Let me explain more my require. To simulate a nanofluid flow using LBM one must set the the nanofluid (water+nanoparticles, exp. water+Cu) parameters by setting those of solid particles Cu) and Base fluid (water). So, my problem is how to set the lattices values of nanofluid? For example : rho_nf= (1.0-phi)*rho_f+phi*rho_p % density of nanofluid (nf), \phi is the % of nanoparticles(p) My first question: If I fix the fluid density rho_f=1, i.e the conversion factor equal their real value, how I can set the particle density? both densities have the same conversion factor? Same question for beta_nf=((1.0-phi)*rho_f*beta_f+phi*rho_p*beta_p)/rho_nf % \beta isthe thermal expansion coefficient Cp_nf=((1.0-phi)*(rho_f*Cp_f)+phi*(rho_p*Cp_p))/rho_nf % Cp is the specific heat My second question: How I can obtain the conversion factor for Cp, K(Thermal conductivity) and \beta and others Thank you in advance for your help Yours sincerely

 Tags lbm, nanofluid, units

 Thread Tools Search this Thread Search this Thread: Advanced Search Display Modes Linear Mode

 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 OffTrackbacks are Off Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post johanz OpenFOAM Pre-Processing 2 December 16, 2018 10:08 ronithstanly Main CFD Forum 1 May 29, 2018 07:43 pharg_yrartibra Main CFD Forum 2 November 25, 2013 10:52 megacrout OpenFOAM 4 July 19, 2011 08:04 SoobY ANSYS Meshing & Geometry 2 January 10, 2011 03:58

All times are GMT -4. The time now is 16:36.

 Contact Us - CFD Online - Privacy Statement - Top