Learning Forum

[not.lah.enough]

Hi there,

I am simulating a water spray to absorb ammonia in contaminated air using DPM injection. Absorption of ammonia into the injected particle (water droplet), as well as exothermic (heat-producing) water and ammonia reaction, are the governing phenomena in the DPM model. However, I've run into the following problems (also summarized in the screenshot below):

1. Water liquid can only be represented in an Inert particle, while the condition to be simulated is otherwise (absorption-reaction). Conversely, the multicomponent particle setting doesn't seem to offer Water Liquid as any options.
2. In the Multicomponent Particle type, the species absorption option isn't available, the only one is "evaporation" (does this also represent absorption?)
3. The Reaction function is still not activated, despite the species reaction being already activated.

Moreover, the water droplets from the spray can be saturated after a certain uptake of ammonia vapor, and the saturated concentration depends on temperature. How does this need to be included in the model? Thanks!

 

[not.lah.enough]

It's been almost a week and no response from anyone. Please let me know what information missing to understand or help me solving the problem. Once again, thanks!