[Azanulbizar]

Hi,

I am wondering if anyone can explain to me how does the size distribution models work and what kind of input I have to put it?

In spray modelling, instead of using Rosin-Rammler, how does one use distribution models such as fixed, general, etc etc which is located in /src/lagrangian/distributionModel

If not mistaken, I got a feeling that they are based on some Cumulative Distribution Function or some probability function. If anyone can refer to me what to look up for, I would also deeply appreciate it.

Thank you very much.

[Chrisi1984]

Hi,

with "general" you can give a volume probabilty for the droplet size in form of a table:

sizeDistribution
{
type general;
generalDistribution
{
distribution
(
( 0.000075 2.752E-03 )
( 0.000125 1.000E-02 )
( 0.000175 1.331E-02 )
( 0.000225 1.642E-02 )
( 0.000275 2.058E-02 )
( 0.000325 2.535E-02 )
( 0.000375 3.005E-02 )
( 0.000425 3.416E-02 )
( 0.000475 3.737E-02 )
( 0.000525 3.967E-02 )
( 0.000575 4.104E-02 )
( 0.000625 4.166E-02 )
( 0.000675 4.157E-02 )
( 0.000725 4.100E-02 )
( 0.000775 3.990E-02 )
( 0.000825 3.866E-02 )
( 0.000875 3.699E-02 )
( 0.000925 3.531E-02 )
( 0.000975 3.358E-02 )
( 0.001025 3.160E-02 )
( 0.001075 2.979E-02 )
( 0.001125 2.800E-02 )
( 0.001175 2.616E-02 )
( 0.001225 2.441E-02 )
( 0.001275 2.276E-02 )
( 0.001325 2.119E-02 )
( 0.001375 1.968E-02 )
( 0.001425 1.825E-02 )
( 0.001475 1.691E-02 )
( 0.001525 1.565E-02 )
( 0.001575 1.449E-02 )
( 0.001625 1.342E-02 )
( 0.001675 1.239E-02 )
( 0.001725 1.142E-02 )
( 0.001775 1.052E-02 )
( 0.001825 9.688E-03 )
( 0.001875 9.023E-03 )
( 0.001925 8.307E-03 )
( 0.001975 7.638E-03 )
( 0.002025 7.016E-03 )
( 0.002075 6.440E-03 )
( 0.002125 5.912E-03 )
( 0.002175 5.551E-03 )
( 0.002225 5.116E-03 )
( 0.002275 4.700E-03 )
( 0.002325 4.312E-03 )
( 0.002375 3.954E-03 )
( 0.002425 3.625E-03 )
( 0.002475 3.324E-03 )
( 0.002525 3.153E-03 )
( 0.002575 2.937E-03 )
( 0.002625 2.706E-03 )
( 0.002675 2.490E-03 )
( 0.002725 2.291E-03 )
( 0.002775 2.108E-03 )
( 0.002825 1.940E-03 )
( 0.002875 1.789E-03 )

);

}
}

With "uniform" you define a constant droplet size for all your droplets.

Kind regards

Chrisi