Gradient

(redirected from Pressure gradient)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to Pressure gradient: Adverse pressure gradient

Gradient

The slope,or change in elevation,of land or improvements such as a pipe or a road.It is expressed as the ratio of inches (or feet) of rise or fall over a specified distance. It is similar to the concept of pitch in roofing.Figure A (above) has a gradient of 1:12 because the grade increases by 1 foot over a distance of 12 feet. Figure B has a gradient of 1:6.

References in periodicals archive ?
Furthermore, these morphological changes inhibited the pressure gradient and laminarized the complex recirculation flow in the upper airway.
The size of the start-up pressure gradient determines the spacing of the flooding pattern and the size of the water injection pressure [19-22].
"Improved Aziz Prediction Model of Pressure Gradient for Multiphase Flow in Wells," International journal of heat and technology, 33(4), 9-12.
All the researchers discussed above considered the existence of threshold pressure gradient in low-permeability reservoirs.
If the resulting bead pressure gradient increases above equation (2), the liquid gets pushed out at the upstream lip.
Using the pressure gradient and concentration gradient of the log allows the dye solution to permeate and diffuse into the log uniformly.
Any gas, regardless of its density, will develop an increased velocity gradient and an increased lateral wall pressure gradient as it flows through a partial obstruction.
The steady component of the velocity can be obtained by the Poiseuille law once the pressure gradient between the head and the heart is known.
The effects were mixed: small effect on maximum pressure (0% and 1% increase), modest effect on pressure gradient (5% and 1% decrease), and moderate effect on mean pressure (9% and 11% decrease).
It is therefore important to understand the threephase air-oil-water behavior in production pipelines and also predict the flow patterns, pressure gradient, and consequently controlling the pipe corrosion.
We consider that open sutures also cause a pressure gradient in a similar way as with fracture.
Translaminar pressure gradient was higher in glaucoma patients than in healthy controls.