Reducing the Drag of a Sprint Olympic Kayak K1

A CFD (Computational Fluid Dynamics) analysis of a simulated K1 Sprint Olympic Kayak was performed, to obtain a drag coefficient Cd=0.0030 at a speed of 5 m/s (9.7 knots). The lower the drag, the faster the kayak would be.

In fluid dynamics, drag (sometimes called air resistance or fluid resistance) refers to forces that oppose the relative motion of an object through a fluid (a gas or liquid).

The drag coefficient (Cd) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid. It is used in the drag equation, where a lower Cd indicates the object will have less aerodynamic or hydrodynamic drag. The Cd is always associated with a particular surface area.

The Cd of any object comprises the effects of the two basic contributors to fluid dynamic drag: skin friction and form drag. The Cd of a lifting airfoil or hydrofoil also includes the effects of lift-induced drag.The Cd of a complete structure such as an aircraft also includes the effects of interference drag.

The simplified equation that was used to calculate the kayak drag coefficient (Cd) is defined as:

Cd=2*Fd/[rho*U^2*A]

where:

-Fd is the drag force, which is by definition the force component in the direction of the flow velocity,
-rho is the mass density of the fluid,
-U is the speed of the object relative to the fluid, and
-A is the wetted surface area

Category:

Science & Technology

Tags:

• K1
• sprint
• olympic
• olimpico
• kayak
• drag
• coefficient
• simulation
• CFD
• moby
• sanjuanx
• coeficiente
• arrastre
• olympics
• animation
• mobykraft

[sanjuanx]

@skatepeak The name of the acoustic track is Bluebirds, by Elfed Hayes. :P

[skatepeak]

What a nice melody :) Who, and what track is it?

nice video-project.

I'm working on dragcoeffficiency in school right now, so I appreciate ur vid a lot ! :)

[sanjuanx]

@arboledax I'm working on the hull shape; focusing to reduce the drag.

[arboledax]

Very Interesting! How's going your final design?