[kabil]

Hi

Currently i am working on making a udf for effective diffussivity of different species for a droplet.
There are three species indices "isp , isp1 and isp2" found in "user_spray_evap.c"
what is the difference between them ??

[SauravMitra]

Hi Kabil,

There is no great significance with "isp", "isp1" and "isp2" specifically.

Their utility can be appreciated if you access species in nested loops. So for example, if you have a double nested loop, you can use "isp" in the parent loop for the species and "isp1" for species in the child loop. You might find this double-nested loop useful in your species diffusivity calculation. For a triple-nested loop, you can invoke "isp2" to access species.

These indices can be used interchangeably, and have no specific reference to parcel, gas or composite species.

Thanks
Saurav