Understanding mass balance errors
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Recently I did an example of absorbing and stabilizing the system, harvesting little by little and improving together. There is circulating logistics in the system. The initial convergence tolerance is set to 0.01. Check the results after convergence. The mass balance data shows that the total feed is not equal to the total product, with an error of about 1.5%. Enter the tolerance setting and reduce it to 0.001, with an error of nearly 1.3%. ； Finally, the circulating logistics is interrupted, the composition and flow rate are artificially determined, and the error is reduced to 0.2%. Although it has not been smaller or error-free, I can still experience happiness. Thanks to the friends on the forum for their help, let’s improve together.
The higher the accuracy, the more difficult it is to converge. How much accuracy is required may be a long summary of future work. It is rare to adjust the default convergence rules now.