Adding emissions and sedimentation

[spco]

hello，how to add emissions? for example, I want to add vehicle HONO emission in the model. however, HONO emission from the vehicle is thought to occupy 0.3-0.8% if the NOX emission. so I need to add NOX emission to the model.

in addition, I want to add the sedimentation process for some gases. How can I do that?

Originally posted by @xcy12 in #304 (comment)

[spco]

@rs028 - you're the chemist! Could you answer this? I'm happy to pitch in with the specifics if you're able to explain what the above means to a non-chemist?

[rs028]

At this stage, the easiest way is to simulate these processes as if they were chemical reactions. The Facsimile format allows to have reactions without products or reactants. For example :

% e : = A ;

Where e is the emission rate in s-1.

Similarly for deposition:

% d : A = ;

Where d is the deposition rate. If needed, the boundary layer height is an environment variable which can be used to calculate d. For example:

% v/BLHEIGHT : A = ;

Where v is the deposition velocity.

If you add "reactions" like these at the bottom of the fac file, you should be able to parameterize these processes.

[xcy12]

That's very great! I will try this method.
Thanks very much for your kind help! @spco @rs028

[xcy12]

I have tried this method and it works! Thanks a lot! @spco @rs028