inviscid
- adjective
- /ɪnˈvɪzɪd/
- Specialized
- In the study of fluid dynamics, an inviscid fluid flows smoothly without any internal resistance.
- inviscid flow
Examples
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Pressure, however, is less problematic than shear stress, because in calculating the pressure distribution, one can assume the flow is inviscid, or frictionless.
Academic text (2005) -
Outside the boundary layer, the flow is inviscid.
Academic text (2005) -
Outside the boundary layer, the flow was essentially the inviscid flow that had been studied for the previous two centuries.
Academic text (2005) -
On the other hand, the boundary layer is so thin that it has virtually no effect on the outer inviscid flow.
Academic text (2005) -
The blowup of the boundary layer shows how the flow velocity v changes as a function of the normal distance n, from zero at the surface to the full inviscid-flow value at the outer edge.
Academic text (2005) -
The exception to the no-effect rule is if the flow separates; then the outer inviscid flow is greatly modified by the presence of the separation region.
Academic text (2005) -
His graduate-level textbook offers a new approach for learning computational and theoretical methods for the analysis of inviscid flows, with and without vorticity present.
Academic text (2005) -
The type of external inviscid flow that promotes boundary-layer separation is a flow that produces an adverse pressure gradient—in other words, an increasing pressure in the flow direction.
Academic text (2005) -
The outer inviscid flow strongly affects the boundary-layer properties; indeed, the outer flow creates the boundary conditions at the outer edge of the boundary layer and dictates the velocity profile within the layer.
Academic text (2005) -
This approach could correctly predict the flow for a well-designed pump operating near its best efficiency point, but it was unable to properly predict off-design performance because the flow separations and recirculations associated with these flows cannot be predicted with the inviscid equation formulation that was being used.
Academic text (1996)
Synonyms
1
9.3
A state of matter that flows without friction at very low temperatures
A liquid that flows easily and is not thick like honey
Antonyms
How Viscous
Surface Forms
Morphology
Etymology
Inviscid comes from the parts in- meaning 'not' and viscid meaning 'sticky', the same root as viscous. So an inviscid fluid is 'not sticky' and has no internal friction, which is why it flows without resistance.