Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: Larry on 24/11/2010 09:30:03

Title: Why do streamlined bodies move faster in fluids?
Post by: Larry on 24/11/2010 09:30:03

Larry asked the Naked Scientists:
   
Why do streamlined bodies move faster in fluids?

What do you think?

Title: Why do streamlined bodies move faster in fluids?
Post by: JnA on 24/11/2010 09:46:11

less drag

Title: Why do streamlined bodies move faster in fluids?
Post by: syhprum on 24/11/2010 16:01:44

Because they go a greater distance in a given time.

Title: Why do streamlined bodies move faster in fluids?
Post by: SteveFish on 24/11/2010 16:45:14

They don't, they just require less energy to propel them.

Title: Why do streamlined bodies move faster in fluids?
Post by: yor_on on 09/12/2010 07:55:22

It's about the friction created between two surfaces I think. The smoother they glide against each other the easier it becomes to move. As all movement meet the resistance at the 'front end' it's about the shape, and also about what kind of surfaces you use. I think sharks constantly loses skin? If I remember right, minimizing the resistance against the water. And I think I read about submarines using bubbles not only to create layers that hide sound but also to minimize the resistance? something about creating small vortexes in the water??