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Difference between RMS and Imbalance

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Old   February 15, 2013, 04:55
Default Difference between RMS and Imbalance
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Hi everybody,

ive a simulation with two phases, air and water.
In the simulation water is running down a slanted plate for 2 sec.
The RMS Mass(Air) and RMS Mass(Water) history are ok (below 10e-4).
The Imbalance for Air is also ok, but for water the history is ocsillating around 7.5%.

My questing is:
What is the difference between RMS and Imbalance?
Maybe someone could give me an example to understand this issue.

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