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epri-dev / SCICHEM

This repository utilizes Git LFS to serve large files - please follow the README-Download-Instructions.txt file in order to access these files. This is a version of the SCIPUFF puff model with chemistry. It allows for the simulation of power plant plumes as a series of puffs that are transported in the atmosphere while undergoing chemical transformation.
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Questions about the SCICHEM model's simulation of multiple sources #12

Closed stwcn1 closed 1 month ago

stwcn1 commented 2 months ago

Hello, I'd like to ask you a few questions about the SCICHEM model's simulation of multiple sources.Could you please provide some assistance. Your assistance would be greatly appreciated.Thank you very much.

  1. If I input multiple pollution sources in the SCN file, will the different sources interact with each other during the simulation process?
  2. Does SCICHEM handle multi-source simulations through linear addition, meaning that the result of a single simulation with multiple pollution sources is equal to the sum of the results of individual simulations for each source? I conducted the following experiment: First, I ran a simulation with two pollution sources simultaneously and calculated the pollutant contribution concentration at a specific receptor point. Then, I simulated each source separately and summed their contributions to the same receptor point. The results of the two methods were quite similar. However, when I input a large number of pollution sources with high emission rates, the difference in contribution concentration between the two methods became significant.
DougHenn1 commented 1 month ago

Different sources will interact, so the results with multiple sources in one calculation may differ from simply summing contributions from calculations with individual sources. Of course, it depends on the proximity of the sources and other factors.