steady flow

Steady flow, also known as stationary flow, describes a fluid's movement where the velocity at any fixed point remains constant over time. This is in contrast to turbulent flow, which involves irregular fluctuations and mixing.12

In steady flow, properties like velocity and pressure are consistent at each point within the fluid. This type of flow is often observed when the fluid has high viscosity, moves slowly, or flows through a narrow channel, such as oil in a thin tube or blood in capillaries. The concept of steady flow is crucial in fluid mechanics and helps determine whether flow is streamlined (laminar) or has small unsteady fluctuations (turbulent).23