counter-current flow

https://doi.org/10.1351/goldbook.CT06864
Flow through a @[email protected] module in which the fluids on the upstream and downstream sides of the @[email protected] move parallel to the @[email protected] surface but in opposite directions.
Source:
PAC, 1996, 68, 1479. (Terminology for membranes and membrane processes (IUPAC Recommendations 1996)) on page 1481 [Terms] [Paper]