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Summary
DescriptionCounter-Current Flow Reversal.png
English: Picture depicts reversal of counter-current flow to concurrent flow may be seen during flooding of a nuclear reactor core.
(A) Annular flow, running counter-current
(B) If conditions are correct, the frictional force at the gas/liquid interface begins to reverse the flow of the liquid
(C) The flow of the liquid has been reversed, now running concurrently in a slug (or other) flow regime
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