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

Who can write the binary diffusion coefficient ??

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 9, 2002, 04:22
Default Who can write the binary diffusion coefficient ??
  #1
Hsin-Ping
Guest
 
Posts: n/a
Dear friend Who can assist me to write the Binary diffusion coefficient ?? Today ,Five species (includes H2,O2,H2O,N2,CO2)be existed inside the my model. but, i never write any UDF about binary diffusion coefficient . so, you can help me to write a simple program about this problem ... ************* you can refer to this book Book Name is Transport Phenomena Author : Bird ,R., Stewart , W., Lighfoot , E., Year : 1966 ****************** P*Dij(x,y)/[(Pc-i*Pc-j)**(1/3)*(Tc-i*Tc-j)**(5/12)*(1/Mi+1/Mj)**1/2] == 3.64*10**(-8)*[Tcell/(Tc-i*Tc-j)**(1/2)]**2.334

Tc-i critical temperature of cell of species i Tc-j critical temperature of cell of species j Pc-i critical pressure of cell of species i Pc-j critical pressure of cell of species j Mi molecular weight of the species i Mj molecular weight of the species j P total pressure Tcell temperature of cell

************************** Best regard

Hsin-Ping
  Reply With Quote

Old   April 15, 2002, 02:22
Default binary diffusion coefficient
  #2
kevin
Guest
 
Posts: n/a
Dear friend Who can assist me to write the Binary diffusion coefficient ?? Today ,Five species (includes H2,O2,H2O,N2,CO2)be existed inside the my model. but, i never write any UDF about binary diffusion coefficient . so, you can help me to write a simple program about this problem ... ************* you can refer to this book Book Name is Transport Phenomena Author : Bird ,R., Stewart , W., Lighfoot , E., Year : 1966 ****************** P*Dij(x,y)/[(Pc-i*Pc-j)**(1/3)*(Tc-i*Tc-j)**(5/12)*(1/Mi+1/Mj)**1/2] == 3.64*10**(-8)*[Tcell/(Tc-i*Tc-j)**(1/2)]**2.334

Tc-i critical temperature of cell of species i Tc-j critical temperature of cell of species j Pc-i critical pressure of cell of species i Pc-j critical pressure of cell of species j Mi molecular weight of the species i Mj molecular weight of the species j P total pressure Tcell temperature of cell

************************** Best regard

Hsin-Ping

  Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
Binary Diffusion Coefficient Frank CFX 3 July 1, 2012 13:11
binary diffusion coefficient / kevin FLUENT 3 July 1, 2012 13:07
mesh file for flow over a circular cylinder Ardalan Main CFD Forum 6 April 17, 2010 23:40
binary diffusion coefficient kevin-change FLUENT 2 October 1, 2002 06:02


All times are GMT -4. The time now is 14:22.