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## Main Question or Discussion Point

Hello, I am trying to obtain how to find the Reynolds Number of a circular plate perpendicular to external flow. Thanks

- Thread starter bmv19
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Hello, I am trying to obtain how to find the Reynolds Number of a circular plate perpendicular to external flow. Thanks

- #2

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http://en.wikipedia.org/wiki/Reynolds_number#Definition

Use the diameter of the plate as a length scale.

- #3

rcgldr

Homework Helper

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The problem is what is the "length" of a flat perpendicular plate?

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The problem is diagrammed below... (This flow is not a pipe. Completely filled volume)

Flow:

--> ______________ __

--> /\ ....................\ |

--> | |.................... | Diameter

--> \/_____________/ _|_

-->

.......|-----Length----|

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