Reynolds Number of a circular plate perpendicular to external flow

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SUMMARY

The discussion focuses on calculating the Reynolds Number for a circular plate positioned perpendicular to external flow. The user specifies a plate diameter of 3 inches and a tube length of approximately 3 feet. While the definition of Reynolds Number is acknowledged, the user seeks a specific equation applicable to a flat plate in perpendicular flow, as existing resources primarily address parallel flow scenarios. The need for a tailored equation for this configuration is emphasized, highlighting a gap in available literature.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with the Reynolds Number concept
  • Knowledge of flow types: external vs. internal
  • Basic mathematical skills for applying fluid equations
NEXT STEPS
  • Research the derivation of Reynolds Number for flat plates in perpendicular flow
  • Explore fluid dynamics textbooks for equations specific to non-cylindrical geometries
  • Investigate computational fluid dynamics (CFD) software for simulating flow around flat plates
  • Review academic papers on experimental methods for measuring Reynolds Number in similar configurations
USEFUL FOR

Mechanical engineers, fluid dynamics researchers, and students studying aerodynamics who are interested in the behavior of flat plates in various flow orientations.

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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
 
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The problem is what is the "length" of a flat perpendicular plate?
 
The diameter of the cylinder is 3 inches. The length of the tube is approximately 3 feet. The set of equations that I am using say that there is an equation for a flat plate in a external perpendicular flow. I have found equations for flat plates with the external flow parallel to the plate's length as represented in the wiki-site and different school notes. However, I have yet to obtain an equation for a flat plate with a flow perpendicular to the diameter.
The problem is diagrammed below... (This flow is not a pipe. Completely filled volume)
Flow:
--> ______________ __
--> /\ ......\ |
--> | |...... | Diameter
--> \/_____________/ _|_
-->
...|-----Length----|
 

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