when an energy balance doesn't

This is just a funny quirk that came up recently in some simulations that caused some consternation before the problem was nailed down. The root is one of those little details that you ignore until it turns into a big detail.

So, I have this big flowsheet in VMGSim, a …

tags: VMGSim, thermodynamics,

Distillation towers in VMGSim

I've been spending my days noodling around in VMGSim recently, and I figured now was the time to talk about how I get my towers to converge. Some of my peers have a hell of a time getting their towers to converge, and I think it boils down to a …

tags: VMGSim, distillation, thermodynamics,

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