I Which Is Better for Visualizing Jet Flow: Schlieren or BOS Photography?

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Schlieren and Background Oriented Schlieren (BOS) photography are being compared for visualizing jet flow from a heat gun. The discussion focuses on determining which imaging technique provides better flow properties and sensitivity. The user seeks guidance on analyzing mean and RMS pixel shifts and how to correlate these findings with schlieren images. Clarification is also requested regarding the acronym "BOS." Ultimately, the goal is to understand which method yields more informative data about the flow characteristics.
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hi

I have two sets of images, one schlieren and the other BOS. I need some ideas to explain the flow and see which one gives better flow properties. The flow is just a jet out of a heat gun. Any help is much appreciated
 
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You mean which type of image gives you more info about the flow?
 
tade said:
You mean which type of image gives you more info about the flow?
Thank you for the reply.

Yes. And the sensitivity of the two systems. I'll be producing mean/rms of the pixel shift and drho/dx, drho/dy but how do I then link it to schlieren images for comparison?
 
Ahsman said:
hi

I have two sets of images, one schlieren and the other BOS. I need some ideas to explain the flow and see which one gives better flow properties. The flow is just a jet out of a heat gun. Any help is much appreciated

What is 'BOS'? I'm unfamiliar with that acronym.
 

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