What We Think We Know About Upstream Straight Run

By Richard A. Furness and David W. Spitzer

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Sometimes data flies in the face of what we’ve been taught for generations. People thought the earth was “flat” for most of recorded history. Its flatness was accepted as fact (at least by all but a few of the most forward-thinking people) until it was mathematically proven otherwise. Only in 1492, did Columbus sail the “ocean blue” in a westerly direction to find a path to India, and even then he didn’t succeed. Pictures of the round Earth became available only 40 years ago as a byproduct of space exploration and courtesy of NASA’s  Apollo missions.

Now we’re confronted with the another “flat Earth” meme, this time in the case of flow measurement. What we “know” regarding upstream straight run distances and what we’ve recently found appear to be in conflict.

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