(Difference between revisions)
 Revision as of 08:49, 25 November 2005 (view source)← Older edit Latest revision as of 04:06, 29 November 2005 (view source)Praveen (Talk | contribs) Line 10: Line 10: \phi(x,y,z,t) = \phi(x,y,z) \phi(x,y,z,t) = \phi(x,y,z) [/itex] [/itex] - Where as a flow in which flow/fluid properties keep on changing w.r.t. time, is termed as unsteady flow. + + where as a flow in which flow/fluid properties keep on changing with time, is termed as unsteady flow.

## Latest revision as of 04:06, 29 November 2005

A steady flow is characterized by constant values of all flow variables at any location in space. If $\phi$ is any flow quantity like velocity, pressure, etc., then in steady flow

$\frac{\partial \phi}{\partial t}(x,y,z,t) \equiv 0$

Hence all flow quantities depend only on the spatial location

$\phi(x,y,z,t) = \phi(x,y,z)$

where as a flow in which flow/fluid properties keep on changing with time, is termed as unsteady flow.