Velocity Estimate from Schlieren Flow Visualization
Velocity Estimate from Schlieren Flow Visualization
(OP)
Hi,
I recently came across a blog on schlieren visualization.
I replicated it with the following: Convex lens (130 mm dia and 350 mm focal length), LED light source (5 mm white LED) and smartphone camera (Moto G4 Plus).
Flow visualization of a hair dryer can be seen here.
Can anyone suggest how to estimate the velocity of the air flow?
Thank you
Jagadeesh R
I recently came across a blog on schlieren visualization.
I replicated it with the following: Convex lens (130 mm dia and 350 mm focal length), LED light source (5 mm white LED) and smartphone camera (Moto G4 Plus).
Flow visualization of a hair dryer can be seen here.
Can anyone suggest how to estimate the velocity of the air flow?
Thank you
Jagadeesh R





RE: Velocity Estimate from Schlieren Flow Visualization
In cases where it is really important to know there are a lot of techniques.
Check these videos - I'm sorry and don't have a complete index to get exactly to what you might want, but they are all worthwhile if you have an interest. I would probably start with Flow Visualization. These are from a while ago. More recent techniques such as laser doppler measurement and hot wire anemometers can also be used.