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Old 02-11-2023, 05:39 PM   #1 (permalink)
CigaR007
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Join Date: Jul 2010
Location: Canada
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GreenTurtle (Retired) - '01 Toyota Echo Sedan
90 day: 44.85 mpg (US)

Zulu - '14 Honda CR-Z
90 day: 49.05 mpg (US)
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Lightbulb Visualizing Air Flow: here's an idea

1. Have you ever played with spinning fiery steel wool as a kid ? I know I have.

2. Have you ever experimented with long exposure photography ? I know I have.

3. Are you looking for a way to visualize air flow on your vehicle, for an in-depth understanding of its interactions with said-object ? I know I am.

How about combining all of those ?

Imagine installing a spinning device on the lower front bumper, near the stagnation point, and lighting up some steel wool. The resulting fiery fine steel particles would cover the entire frontal area of the vehicle. The incoming air flow would then re-align those particles from a sideways momentum to a longitudinal momentum, thus creating lines of "visible" airflow by using long-exposure photography.

The same could be done at the rear bumper in order to expose the wake turbulence.

  1. The camera would be setup on a sturdy tripod to get a side view of the vehicle, preferably at a wide angle.


The spinning device could be cordless drill.


Been thinking about this for a while. Wondering if it might work...

Thoughts ?


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