countercurrent

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countercurrent

[′kau̇nt·ər‚kər·ənt]
(science and technology)
A current flowing adjacent to the main current but in the opposite direction.
References in periodicals archive ?
Application of high-speed counter-current chromatography combined with macroporous resin for rapid enrichment and separation of three anthraquinone glycosides and one stilbene glycoside from Rheum tanguticum.
These two lines were combined in test section where these two fluids in direct contact exchange mass in counter-current flow.
The counter-current systems are vertical and horizontal but the "horizontal" or inclined washing are more efficient because of the inherent countercurrent nature of water flow within the process.
Since injected liquid preferentially wets the medium it gives rise to counter-current imbibition, that is, spontaneous linear flow of wetting fluid into the medium and a counter flow of the resident liquid from the medium.
In the air cooler-condenser during the counter-current process effective mass exchange between flowing downwards condensed heavy shale oil and moving upwards vapour phase takes place.
A part of wash water overflows with the froth bubbles and the remaining part flows down the froth counter-current to the gas phase and is referred to as bias water.
In counter-current flow, the droplets and drying air move through the drying chamber in opposite directions.
Somewhat of a counter-current to this concept is the one championed by those who call for random acts of kindness from themselves and their fellow citizens.
Filters are fully enclosed systems based on the reciprocating tray concept, making it possible to carry out multi-step process operations in a single unit, including filtration, co-current or counter-current washing and cake drying.
At low or sub-critical speeds, the T-mixer/reactor functions as a blender with the mixing elements pushing the material according to the counter-current principle in an axial and radial direction, according to the company.
Planned to be fully operational by 2002, the Earth Simulator will be able to analyse and predict climate change on a global scale as well as help scientists understand phenomena such as geological shifts, the genesis of earthquakes, changes in the earth's crust and the counter-current motion of the mantle.
After beatifying Teresa Bracco, who was strangled and shot in 1944 by a Nazi soldier who tried to rape her during the German occupation, the pope said the 20-year-old Piedmont woman as "a message of hope for those whose struggle to go counter-current to the spirit of the world.