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

Search Results

Register Blogs Community New Posts Updated Threads Search

Showing results 1 to 9 of 9
Search took 0.00 seconds. Search: Posts Made By: flotus1
Forum: FLUENT November 5, 2012, 10:40
Replies: 20
Views: 11,968
Posted By flotus1
This is exactly the point when the whole thing...

This is exactly the point when the whole thing becomes comlicated:D

You will need a surrounding medium. And the simulation will be some kind of multiphase including melting, radiation...
In a...
Forum: FLUENT November 5, 2012, 08:29
Replies: 20
Views: 11,968
Posted By flotus1
I totally forgot... If you dont want to to...

I totally forgot...

If you dont want to to go too deep (no free surface analysis, no real melting process...), a thermal boundary condition will be enough. You can apply it to the whole surface...
Forum: FLUENT October 29, 2012, 11:18
Replies: 20
Views: 11,968
Posted By flotus1
The number of ordinates is controlled via the...

The number of ordinates is controlled via the Theta and Phi Divisions.

Could you post a more schematic image of your problem setup? I dont really understand what you want to simulate.
If you are...
Forum: FLUENT October 29, 2012, 10:55
Replies: 20
Views: 11,968
Posted By flotus1
As i mentioned above, using the DO model to...

As i mentioned above, using the DO model to simulate a sharply defined laser beam was more of a workaround. I doubt that it will yield quantitatively correct results the way I abused it.
If you want...
Forum: FLUENT July 7, 2012, 12:47
Replies: 20
Views: 11,968
Posted By flotus1
I already tried to increase the range between the...

I already tried to increase the range between the two temperatures. I think 1000K to 2000K was the widest range I checked. No converging solution, even when combined with an unreasonably small...
Forum: FLUENT July 6, 2012, 04:19
Replies: 20
Views: 11,968
Posted By flotus1
So here is the UDF for the time-dependent...

So here is the UDF for the time-dependent absorption coefficient:

DEFINE_PROPERTY(absorption_coeff_time,c,t) //time-dependent absorption coefficient
{
real abs_coeff;
real x[ND_ND]; ...
Forum: FLUENT July 4, 2012, 05:19
Replies: 20
Views: 11,968
Posted By flotus1
To clarify what I want to simulate, I ran a...

To clarify what I want to simulate, I ran a simulation where the absorption coefficient is a function of time.
As time progresses, the absorption coefficient is reduced starting from the top of the...
Forum: FLUENT July 3, 2012, 17:50
Replies: 20
Views: 11,968
Posted By flotus1
You are right, the cell temperature is also...

You are right, the cell temperature is also fluctuating (the absorption coefficient is a function of temperature). Actually, the cell temperature is limited to 1K by the solver as soon as the...
Forum: FLUENT July 3, 2012, 11:56
Replies: 20
Views: 11,968
Posted By flotus1
Problems with radiation (discrete ordinates model)

Hi guys I am stuck and I could really use some help.

I want to simulate material melted by a laser beam. For testing purposes, i set up a very simple 2-dimensional case.
...
Showing results 1 to 9 of 9

 
Forum Jump

All times are GMT -4. The time now is 00:13.

Contact Us - CFD Online - Privacy Statement - Top