Fluid flow with fluid staying at quasistatic equilibrium and fluid pressure p(t, {\bf r}) and velocity {\bf u}(t, {\bf r}) are not changing in time:
| p(t, {\bf r}) = p({\bf r}) |
| {\bf u}(t, {\bf r}) = {\bf u}({\bf r}) |
This flow regime is often observed in pipeline fluid flows and reservoir fluid flows
See also
Steady State Well Flow Regime (SS)