Photographing flow

I'm wondering if anyone may be able to help me. I am wanting to
photograph the airflow over a turbine blade being tested in a wind
tunnel, via the attachment of small cotton threads to its surface.
The only way to isolate the blade is to use a stroboscope and I would
like to then take a photo of this, so I have a record of the direction
the cotton threads are being blown in.
I tried today without the strobe, and just using my flash gun. It
wasn't too bad, but a little blurred still from the slow shutter
speed. I've tried also using the bulb setting and letting the strobe
pulse a few times hoping there would be enough light, but this wasn't
very successful either.
If anyway has ever photographed this sort of thing and has some clues
on what I should do, I would be very grateful.
Thanks in advance.
Reply to
Loading thread data ...
Dear BuzzyBee:
Use a floodlight to make the lighting very intense. Strobe the camera, and let it autoadjust to the available lighting. Remember that at higher speeds, the mass of a cotton thread will allow it to define a path other than what the air is moving in. You might want to consider a smoke streamer instead...
Google has a lot of really good hints: how to "high speed photography" how to "synchronous photography"
David A. Smith
Reply to

Site Timeline

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.