{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: mpler when studying a problem to first examine it without friction and then add the friction forces later, or only add them where they are significant. Friction in a fluid occurs through viscosity. It acts on a body through shear stress, τ, and is related to a fluid property, µ [kg/m‐s], the viscosity or dynamic viscosity. Note that u is the x‐component of velocity so u and y are orthogonal. µ is a property of the fluid. It generally depends on temperature. For example cold oil has higher viscosity than warm oil There is also a fluid property, ν = µ/ρ [m2/s] For air at STP 1.79 10 / ∝√ Tables from the inside cover of Munson, Young and Okiishi, “Fundamentals of Fluid Mechanics,” 3rd ed. New York (Wiley & Sons) 1990. An invis...
View Full Document

{[ snackBarMessage ]}