friction velocity


friction velocity
динамическая скорость

Англо-русский гидрогеологический словарь. — Ташкент. . 1979.

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  • Friction stir welding — (FSW) is a solid state joining process (meaning the metal is not melted during the process) and is used for applications where the original metal characteristics must remain unchanged as far as possible. This process is primarily used on aluminum …   Wikipedia

  • Friction loss — refers to that portion of pressure lost by fluids while moving through a pipe, hose, or other limited space. Causes Friction loss has several causes, including:*Frictional losses depend on the conditions of flow and the physical properties of the …   Wikipedia

  • Friction — For other uses, see Friction (disambiguation). Classical mechanics …   Wikipedia

  • Velocity (comics) — Superherobox caption=Cover of Velocity issue #1 comic color=#8080ff character name=Velocity real name=Carin Taylor publisher=Image Comics debut=Cyberforce Volume 2 Issue 1 creators=Marc Silvestri alliance color=#ffc0c0 alliances=Cyberforce… …   Wikipedia

  • Dynamical friction — is a term in astrophysics related to loss of momentum and kinetic energy of moving bodies through a gravitational interaction with surrounding matter in space. It is sometimes referred to as gravitational drag, and was first discussed in detail… …   Wikipedia

  • Constant-velocity joint — Rzeppa six ball CV joint Constant velocity joints (aka homokinetic or CV joints) allow a drive shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. They are mainly… …   Wikipedia

  • Coefficient of friction — The coefficient of friction is a dimensionless quantity symbolized by the Greek letter μ and is used to approximate the force of friction. Friction can be viewed, again as an approximation, as being of two primary types, static or kinetic . The… …   Wikipedia

  • Fanning friction factor — The Fanning friction factor is a dimensionless number used in fluid flow calculations. It is related to the Shear stress at the wall as:: au = frac{ f ho v^2}{2}where:* au is the shear stress at the wall *f is the Fanning friction factor of the… …   Wikipedia

  • Escape velocity — In physics, escape velocity is the speed where the kinetic energy of an object is equal to the magnitude of its gravitational potential energy, as calculated by the equation,:U g = frac{ Gm 1m 2}{r}.It is commonly described as the speed needed to …   Wikipedia

  • Perrin friction factors — In hydrodynamics, the Perrin friction factors are multiplicative adjustments to the translational and rotational friction of a rigid spheroid, relative to the corresponding frictions in spheres of the same volume. These friction factors were… …   Wikipedia

  • Muzzle velocity — For the computer video game, see Muzzle Velocity (computer game). Muzzle velocity is the speed a projectile has at the moment it leaves the muzzle of the gun[1]. Muzzle velocities range from approximately 400 ft/s (120 m/s) to… …   Wikipedia

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