How to handle reactive trace substances?
Timo Koch @timok: An idea was that
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Fluidsystem specify numTraceComponents
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sum x_i = 1 (i = main components, excluding trace components)
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x_trace = mass_trace / mass_phase(excluding trace mass)
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Trace compoments get their own advection diffusion equation that is not considered by replaceCompIdx / total mass balance
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Tracer have no influence on molar mass, density, viscosity, ... any other fluid phase property
Would be nice: mechanism to attach a list of tracer to the fluid system at compile time and access it at runtime.