Stokes Law

Stokes law and terminal velocity.

Stokes law. The cookie gdlr core privacy box is created when the user accepts the current settings. We use this cookie to remember your choice when you come back to visit again the website. Stokes law is the basis of the falling sphere viscometer in which the fluid is stationary in a vertical glass tube.

Stokess law is derived from the solution of the navierstokes equations assuming 4 that inertial forces are negligible compared to viscous forces and that the fluid speed at the particles surface is the same as the particles. Stokess law mathematical equation that expresses the settling velocities of small spherical particles in a fluid medium. If correctly selected it reaches terminal velocity which can be measured by the time it takes to pass two marks on the tube.

In this article let us look at what is stokes law and its derivation. Importance of stokes law. The force acting in resistance to the fall is.

Stokes law the drag on a spherical particle in a fluid is described by stokes law for the following conditions. Ce cookie est utilise pour se rappeler du choix de lutilisateur. Stokes law is an equation that expresses the settling velocities of small spherical particlesor in our case a well rounded rock in a fluid medium.

Re1 du k dx k 0 steady state flow du j dt0 navier stokes equation. When any object rises or falls through a fluid it will experience a viscous drag whether it is a parachutist or spacecraft falling through air a stone falling through water or a bubble rising through fizzy lemonade. This law account for the formation of clouds.

Le cookie gdlr core privacy box est cree lorsque lutilisateur accepte le parametrage des cookies. A sphere of known size and density is allowed to descend through the liquid. Stokes law and viscosity measurement laboratory investigation no.

What is stokes law. Stokes law is a mathematical equation that expresses the settling velocities of the small spherical particles in a fluid medium. This law is used in the determination of electronic charge by millikan in his oil drop experiment.

Stokes in 1851 is derived by consideration of the forces acting on a particular particle as it sinks through a liquid column under the influence of gravity. Fluid is a newtonian incompressible fluid du k dx k 0 gravity is negligible g0 flow is creeping flow ie. This law helps a man coming down with the help of a parachute.