# Confusion Between Unsteady and Turbulent Flow

I am confuse understanding between unsteady and turbulent flow. If I look the fluid simulation in Youtube, they both look the same. What is the difference between them? Please explain for a beginner.

We can divide fluid flows into several types, in this case based on:
- time dependence:
* steady (stationary) flow - fluid properties at any selected point in a system do not change in time
* unsteady (transient) flow - this one is time-dependent
- turbulence:
* laminar - there are no turbulences
* turbulent - turbulations are present in the system

Turbulent flow is generally always unsteady because turbulence is a time-dependent phenomenon. Such flow can be statistically stationary though.

We can divide fluid flows into several types, in this case based on:
- time dependence:
* steady (stationary) flow - fluid properties at any selected point in a system do not change in time
* unsteady (transient) flow - this one is time-dependent
- turbulence:
* laminar - there are no turbulences
* turbulent - turbulations are present in the system

Turbulent flow is generally always unsteady because turbulence is a time-dependent phenomenon. Such flow can be statistically stationary though.