Confusion Between Unsteady and Turbulent Flow

[askor]

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.

 

[FEAnalyst]

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.
Laminar flow can be either steady or unsteady.

 

[askor]

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.
Laminar flow can be either steady or unsteady.

Why does laminar include in "based on turbulence" when there are no turbulences?

Can you please show me the simulation/animation of steady and unsteady laminar flow? What does in real life the steady and unsteady of laminar flow example is look like?

 

[osilmag]

Laminar flow is smooth and straight, depicted as linear lines of flow in layers.