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Fluid Mechanics
Term | Definition |
---|---|
viscous flows | significant frictional effects |
inviscid flow region | regions (typically not close to solid surfaces) where viscous forces are negligibly small compared to inertial or pressure forces |
external flow | an unbounded fluid over a surface |
internal flow | flow bounded by solid surfaces |
incompressible flow | the density of flowing fluid remains nearly constant over time and throughout space regardless of pressure (e.g. liquid flow) |
compressible flow | the density of fluid changes during flow (e.g. high-speed gas flow) |
laminar flow | highly ordered fluid motion characterized by smooth layers of fluid (e.g. high-viscosity oil flow) |