Would CD change for a cylinder if the

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SUMMARY

The discussion centers on the impact of surface properties, specifically hydrophobicity, on the drag coefficient (CD) of a cylindrical object submerged in water. Participants explore whether a completely hydrophobic surface would significantly alter the drag compared to normal skin drag, particularly for an object with a 7:1 length-to-diameter ratio. The consensus indicates that the transition from normal skin drag to hydrophobic drag can lead to measurable differences in drag performance, particularly in streamlined shapes.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Knowledge of drag coefficient (CD) concepts
  • Familiarity with hydrophobic surface properties
  • Basic principles of object ratios in fluid environments
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  • Research the effects of hydrophobic surfaces on drag in fluid dynamics
  • Explore experimental methods for measuring drag coefficients
  • Study the impact of object shape ratios on fluid resistance
  • Investigate applications of hydrophobic materials in marine engineering
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Engineers, fluid dynamics researchers, and marine designers interested in optimizing drag performance for submerged objects.

Vanselena
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If the surface was completely hydrophobic vs normal skin drag? If it changed would it be significant in an object with a 7:1 ratio?

Thank you for your responses!
 
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Vanselena said:
If the surface was completely hydrophobic vs normal skin drag? If it changed would it be significant in an object with a 7:1 ratio?

Thank you for your responses!

Forgot to mention the object would be under water.
 

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