Related Experiment Video
Updated: Jun 28, 2026

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
Published on: April 23, 2018
An experimental study of the decay of turbulent puffs in pipe flow
1Max Planck Institute for Dynamics and Self Organization, Bunsenstrasse 10, Göttingen, Germany. adelozar@googlemail.com
Abstract:
As reported in a number of recent studies, turbulence in pipe flow is transient for Re<2000 and the flow eventually always returns to the laminar state. Generally, the lifetime of turbulence has been observed to increase rapidly with Reynolds number but there is currently no accord on the exact scaling behaviour. In particular, it is not clear whether a critical point exists where turbulence becomes sustained or if it remains transient. We here aim to clarify if these conflicting results may have been caused by the different experimental and numerical protocols used to trigger turbulence in these studies.
Related Concept Videos
General Characteristics of Pipe Flow II
The distance to reach a fully developed flow is called the entrance length and depends on the flow...
General Characteristics of Pipe Flow I
The classification of fluid...
Turbulent Flow
Major Losses in Pipes
Fluid flow can be classified as laminar or turbulent, primarily based on the Reynolds number. This dimensionless number reflects the relative influence of inertial to viscous...
Turbulent Flow: Problem Solving
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Steady, Laminar Flow in Circular Tubes

