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matt horman
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why is it useful to compare viscous flow to inviscid
For external flows, inviscid flow provides a very close approximation to the solution for a viscous fluid outside the thin boundary layer at a solid surface. For internal flows, inviscid flow provides a very close approximation to the solution for a viscous fluid in the entrance region of the duct or channel, outside the wall boundary layer at the solid surfaces.matt horman said:why is it useful to compare viscous flow to inviscid
Inviscid flow refers to the movement of a fluid without any internal friction or viscosity. Viscous flow, on the other hand, is characterized by the presence of internal friction and viscosity, causing the fluid to stick to surfaces and experience drag.
Inviscid flow is commonly observed in idealized situations, such as the flow of air around a streamlined object. Viscous flow, on the other hand, is more prevalent in everyday life, such as the flow of water through pipes or the movement of blood through our veins.
The presence of viscosity in a fluid causes it to resist deformation and flow more slowly. This can lead to the formation of eddies and turbulence, as well as increased drag on objects moving through the fluid.
Inviscid flow can be modeled using idealized mathematical equations, while viscous flow often requires more complex numerical simulations. Some common methods used for viscous flow modeling include computational fluid dynamics (CFD) and finite element analysis (FEA).
Yes, in most cases, a fluid will exhibit both inviscid and viscous flow to some degree. The relative importance of each type of flow depends on factors such as the fluid's viscosity, velocity, and the shape of the objects it is flowing around.