 |
 |
 |
|
|
|
[Sponsors] | ||||
November 29, 1999, 17:57
|
Diffusion Coefficients
|
#1 |
|
Guest
Posts: n/a
|
Hello Everyone:
I am working on a problem which involves pure mixing without anyone reaction. The fluids used are ethylene glycol and water. Can you anyone help me in estimating the value of the diffusion coefficient bewteen these two fluids? Thanks, Thomas |
|
|
||
|
November 30, 1999, 03:47
|
Re: Diffusion Coefficients
|
#2 |
|
Guest
Posts: n/a
|
yes...it's quite obvious when you think about it.
it's roughy 0.789. I worked it out.... |
|
|
|
||
|
November 30, 1999, 05:00
|
Re: Diffusion Coefficients
|
#3 |
|
Guest
Posts: n/a
|
Hi Nigel,
Can you please me know the procedure and formulas used to arrive at this value? Thanks, Thomas |
|
|
|
||
|
December 2, 1999, 06:01
|
Re: Diffusion Coefficients
|
#4 |
|
Guest
Posts: n/a
|
Dear Thomas
I do not have exact data but diffusion coefficients of solute in the water(solvent) is order of 10^(-5) sq.cm/sec. If your problrm is turbulent flow(usual case), approximate value might be O.K. because turbulent diffusion is predominat, maybe as large as 'order of 10^2 ~ 10^3' than molecular diffusion. Sincerely, Jinwook |
|
|
|
||
 |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Moving mesh | Niklas Wikstrom (Wikstrom) | OpenFOAM Running, Solving & CFD | 122 | June 15, 2014 06:20 |
| How can define different diffusion coefficients | FrankW | CFX | 1 | July 31, 2010 09:43 |
| implementation of diffusion coefficients and use of diffusion coefficients | stephan | OpenFOAM Running, Solving & CFD | 0 | February 28, 2010 14:30 |
| How to define the mass diffusion coefficients of species? | legendyxg | Fluent UDF and Scheme Programming | 1 | May 10, 2009 16:29 |
| Diffusion component at inlet | Balaji | FLUENT | 2 | August 8, 2005 07:37 |
Linear Mode
