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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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No more puffs at Time #7

Closed qingfengnanmeng closed 5 months ago

qingfengnanmeng commented 5 months ago

During my 744-hour SCICHEM simulation, an unexpected interruption occurred at the 600-hour mark with the message ''No more puffs at Time = 697.8 hrs''. Is this a normal occurrence, and what could be the underlying cause? d96535a6f6559db24cb7bcb15febb3e

DougHenn commented 5 months ago

That means all of the puffs have been transported out of the computational domain. SCICHEM will normally continue to run if there is an active source (which I assume is not the case since there apparently are no "new" puffs being created) or a source is set to start in the future. Otherwise, there is no reason to continue and SCICHEM stops. Without knowing your specific source definitions, I would say this is probably normal behavior.

qingfengnanmeng commented 5 months ago

It is a multi-component simulation, the scn file specifies an area source for continuous release, as shown in the figure. Why is it encountering a situation where there are no puffs? image

DougHenn commented 5 months ago

The duration of your release (TDUR) is 696 hours, so it seems plausible to me that there are no more puffs 1.8 hours later, depending on the size of the domain and wind speed.