Visualization Via Temperature

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One downside to many flow visualization techniques, like those using dye, smoke, or particles, is the difficulty of dealing with their aftermath. You can only introduce so much of them into a wind or water tunnel before it’s necessary to shutdown and clean everything. One alternative is to use temperature, as shown in the video above. By simply introducing a warmer fluid and using an IR camera, it’s possible to accomplish many of the same effects without the mess. (Video credit: A. Khandekar and J. Jacob; submitted by J. Jacob)

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