resistance to flow

resistance to flow

the pressure differential required to produce a given rate of flow of a gas or liquid through a vessel.
References in periodicals archive ?
Superconductors have electrons that conduct electricity with no resistance to flow.
A viscoelastic fluid combines resistance to flow with the ability to return to a previous state when disturbed.
The net effect of this increased muscularization and fibrosis narrowing of the vascular lumen, producing increased resistance to flow, and increasing right ventricular afterload.
For gravity-flow or low-head pipeline applications, HDPE is an effective solution due to its smooth bore and low resistance to flow.
Viscosity is defined as a fluid's resistance to flow, but is more commonly referred to as a fluid's "thickness" (flowing slowly like motor oil) or "thinness" (flowing easily, like water).
A higher repulsive surface charge," the authors explain, "increases spacing between erythrocytes, reduces clumping, lowers viscosity, and lowers peripheral resistance to flow.
The facility also will serve as a test facility to test the newly designed burners and combustion principles with regard to fuel economy and emissions monitoring and combustion tests fibrous materials with regard to the resistance to flow at different temperatures.
Baking makes things worse as viscosity decreases and there is less resistance to flow.
Because malignant tumors are rich in neovascularity, and the vessels laid down by such tumors often lack a normal media layer, they often exhibit very low resistance to flow.
Another key feature of fluids is that resistance to flow increases rapidly as the flow rate increases, as we all know from experience with door closers.
The GAG chains provide resistance to flow, so the water can't get out of our cartilage instantly when we compress it.
This rests upon the Poiseuille equation, which demonstrates that resistance to flow of gas through a tube is directly proportional to length, while being inversely proportional to the radius of the tube to the fourth power (when flow is laminar).

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