Hosta

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Summary

Description	English: Drag coefficient C_d for a sphere as a function of Reynolds number Re, as obtained from laboratory experiments. The dark line is for a sphere with a smooth surface, while the lighter-colored line is for the case of a rough surface. The numbers along the line indicate several flow regimes and associated changes in the drag coefficient: 2: attached flow (Stokes flow) and steady separated flow, 3: separated unsteady flow, having a laminar boundary layer upstream of the separation, and producing a vortex street, 4: separated unsteady flow with a laminar boundary layer at upstream side, before flow separation, with downstream of the sphere a chaotic turbulent wake, 5: super-critical separated flow, with a turbulent boundary layer.
Date	before 2010 date QS:P,+2010-00-00T00:00:00Z/7,P1326,+2010-00-00T00:00:00Z/9 (original), 2016 (modifications)
Source	Original on NASA GRC Website imported as File:Dragsphere nasa.jpg Vectorized version at File:Drag sphere nasa.svg, further edited here with source data from File:CX SPHERE.png
Author	Original: Anonymous NASA author (editor: Nancy Hall) Vectorization by User:Kraaiennest Edits by Olivier Cleynen
Other versions	.svg: English .svg English .svg English .svg Russian .svg .png: English .png French .png French .png French .png .jpg: English .jpg

Licensing

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File history

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	Date/Time	Dimensions	User	Comment
current	17:52, 3 October 2016	655 × 341 (18 KB)	Ariadacapo	Reduce font size for axis labels
	17:31, 28 September 2016	682 × 359 (18 KB)	Ariadacapo	Tidy up: font sizes and labels
	17:30, 28 September 2016	682 × 359 (16 KB)	Ariadacapo	Re-arrange numbers on axis, adjust curves so they match values on File:CX_SPHERE.png
	17:29, 28 September 2016	682 × 396 (17 KB)	Ariadacapo	Use colors from the Viridis colorscale for accessibility, dashes can be avoided
	17:29, 28 September 2016	682 × 396 (17 KB)	Ariadacapo	Tidy up: text in serif, identical data range on two curves, better use of space
	17:28, 28 September 2016	637 × 430 (16 KB)	Ariadacapo	Basic cleanup: exponents in x-axis, text alignment, uniform font sizes, vacuum defs
	17:27, 28 September 2016	673 × 451 (20 KB)	Ariadacapo	User created page with UploadWizard