friction head

friction head

[′frik·shən ‚hed]
(fluid mechanics)
The head lost by the flow in a stream or conduit due to frictional disturbances set up by the moving fluid and its containing conduit and by intermolecular friction.

friction head

In a piping system, the pressure drop expended in overcoming frictional resistance to flow.
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References in periodicals archive ?
The proper design of drip irrigation laterals comprehends emitter discharge variations, change of flow stream lines due to emitter's barb protrusion, change of hydraulic head due to elevation, friction head losses in the laterals to provide uniform water application.
The Diamondback[R] tulip is tapered with a friction head, which makes the tulip not floppy.
First, we calculate the friction head loss in the eighth floor horizontal run and the two risers connecting the seventh and eighth floors.
7], the friction head losses in the eighth floor horizontal run and each riser, respectively.
In the case where there are long runs of condenser water piping between the condenser and the cooling tower, with a correspondingly large flow friction head loss, a VFD may indeed provide energy savings by reducing flow and head loss at part load and/or part lift.
For wildlife and shots of moving people, particularly in windy weather, a heavier tripod with a fluid head assures the best results, because the weight of the tripod alone, coupled with solid legs, minimizes the effects of wind and hand movement, and the fluid head allows you to pan and tilt the camera smoothly without the jumps and jerks you'll get with a cheap friction head.
He enjoys an Indian tonic friction head massage and an eyebrow massage.
Liam Finnegan, owner of the Waldorf Adare, combines traditional hot towel shaves with Indian tonic friction head massages.
The result is that friction head is added to the system and this increases the electric power required.
The Diamond Head long-life coating is a carbon substance that creates a smooth and ultra-hard, Itra-low friction head surface.
The software can also display a system curve of flow rate versus friction head for the piping system.
The FDA cleared TiTLE 2 Poly Axial Spinal System enables spine fixation to be simple, easy and fast due to its anti-cross threading locking feature and built in friction head.