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Experimental study demonstrates directional velocity resolution in three-dimensional flows, suggesting alignment with an approximate cosine law.
A thin film velocity probe has been designed for use in three-dimensional flows where it is required to study the components of velocity in each direction separately. Experiments have shown that the components are represented by an approximate cosine law, though there are some variations near ninety degrees. The design and manufacture of this probe are described together with the experimental results.
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Brech et al. (1971) studied this question.
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