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No species released when using Transport of Species model

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Hi,

I am trying to add some tracer to the bulk flow. In Study 1, I am running a Steady air flow, and then in Study 2, I add a tracer to the flow. The tracer is released from a point (a source using weak contribution ) and concentration changes with time with a Gaussian Pulse (gp1). To set up this problem, I am pretty much following the steps taken in the Turbulent_mixing.mph in the Model Library model. Although the solution does not diverge, but I am not getting any released tracer in the domain.

I would appreciate it if someone could look at the attached file and let me know what has caused zero tracer release.

Mazyar

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