Luftvis Academy
Schlieren Visualization | Jet | Transitional Jet from Syringe
The transitional jet from a syringe is visualized by Luftvis Schlieren System. It is interesting to find that the jet from the needle has a transitional feature. At the beginning, the straight laminar part is longer; following the push of the syringe, the jet eventually becomes fully turbulent.
Schlieren Visualization | Using CO2 as Flame Distinguisher
A jar of CO2 is used as the flame distinguisher. As the density of CO2 is heavier than air, the CO2 will fall off the jar as if water is poured out. The CO2 will isolate the flame from air, eventually the combustion could not continue and the candle is out.
Schlieren Visualization | Combustion | Ignition and Flame Growth of a Flame Torch
The kitchen flame torch is studied. The visualization about the flow field is separated into two parts: Part 1 is the visualization of the cold fuel (butane) jet before the ignition; Part 2 is the visualization of the flame growth after the ignition button is pushed.
Schlieren Visualization | Turbulence | Transitional Wake of a Falling Ball into Water
The transitional wake behind a falling steel ball is visualise. We can clearly observe the development of smooth ring-like vortex immediately behind the ball. The vortex gradually is subject to the instability mechanism. Eventually it dissipates into turbulent wake.
Schlieren Visualization | Jet | Mini-Supersonic Jet from Air Duster
The mini supersonic jet from spray duster is visualized through Luftvis schlieren system with different magnifications, so that details of the jet can be revealed. The interesting phenomena include the shock waves and turbulent jet.