flow resistance

flow resistance

[′flō ri‚zis·təns]
(fluid mechanics)
Any factor within a conduit or channel that impedes the flow of fluid, such as surface roughness or sudden bends, contractions, or expansions.
References in periodicals archive ?
A small diameter produces the greatest flow resistance, and hence the greatest oral pressure.
However, high injection speed tends to cause high filling pressure, which will result in the compression of the free volume of polymer chains; therefore, the viscosity will get higher and the flow resistance will increase.
In "better plugging effect," the microspheres implement bridging and plugging through covalent bonds between the surface molecular chain of the microspheres in the pore and throat to generate flow resistance.
All these observations can be explained on the basis that these factors have a negligible influence in increasing flow resistance and reducing conductance [16] or alternatively humoral factors affect transbronchial smooth muscle tone [17] and protect pulmonary function throughout pregnancy.
Head pressure occurs due to the flow resistance of the die and the piping that connects the die to the end of the barrel.
He begins with calculations of flow resistance in steep channels, then looks at fluvial bedload transport in steep streams, debris flows and important elements for assessing its hazard, and the the magnitude and frequency of torrential sediment events.
Due to its equivalence with an electric circuit, the pressure drop in Equation (1) can be represented in terms of flow resistance and flow rate as shown below:
Figure 5 shows the conjunction of two storages by one flow resistance and the associated nomenclature of the state variables.
2001) noted that the flow resistance of the device must be low relative to the tile resistance to obtain an accurate measurement.
Under different core permeability, the flow resistance and the resistance coefficient and residual resistance coefficient increase with the increase of asphalt particle size.
The viscosity and flow resistance of modern carriers, i.
sup][29],[30] It also provides information about plaque vulnerability, calcification, estimates the blood flow resistance and microvascular resistance of the vessel segments imaged.