I designed and made a rotary atomizer with the help of 3D printing. Now, in order to evaluate its performance, I want to measure the diameter of the produced droplets. According to mathematical calculations and theory, the diameter of the droplets is about 100 microns and I want to measure the diameter experimentally.
Please help me in this way how to experimentally measure the diameter of a drop that is produced continuously.
Best regards,
Hi,
Just spray the droplets in front of a dark screen. Shine a bright source of light on to sprayed region and observed the sprayed region through a 20X microscope. Put camera on the eyepiece and take snapshots of the falling droplets. Make sure to use a microscope eyepiece having a calibrated marked scale in it. 100um can be readily seen in 20X, rather 10X should also be fine, the latter will provide you with better depth of focus.
Regards
Amit
Thanks Amit Morarka , that's great this idea,
but, I using a rotary sprayer therefore the diameter of the distribution droplets is wide.
I think using this way very hard.
Regards,
Hi Shahdad Kamfiroozi ,
I think the most straightforward (and intuitive) way is what Amit suggests. A good imaging setup (bright light source, and good contrast) will resolve the problem. Regarding the distribution, the image processing of the captured images (depending on your image quality, it may be super easy or super difficult) provides you with the distribution of the droplets. I use a similar procedure for measuring the diameter and distribution of bubbles departing from a boiling surface.
Thanks,
Shayan
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