Question

By what mechanism do the hundred-micron-sized scales on the shark skin reduce drag?

By what mechanism do the hundred-micron-sized scales on the shark skin reduce drag?

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The scales on fast-swimming sharks have evolved two mechanisms for controlling the boundary layer flow over the skin surface leading to a reduction in drag.

The first consists of the small streamwise keels covering the surface of the scales which reduce turbulent skin friction drag.

The second mechanism is attributed to loosely embedded scales that are located on key regions of the body. When actuated to bristle by the flow, these scales potentially act as a means of controlling flow separation, thereby minimizing pressure drag during swimming maneuvers.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A nutrition website advocates the consumption of collagen-rich foods such as chicken skin, shark fins, and...
A nutrition website advocates the consumption of collagen-rich foods such as chicken skin, shark fins, and pigs' feet as part of a “wrinkle-free” diet. Is the consumption of foods rich in collagen required for proper collagen biosynthesis? Do you think this diet is likely to decrease the appearance of wrinkles? What would help?
what is the cellular mechanism by which overexposure to the sun induces skin peeling?
what is the cellular mechanism by which overexposure to the sun induces skin peeling?
How do cortico-steroids reduce fever? How does this (mechanism) work?  
How do cortico-steroids reduce fever? How does this (mechanism) work?  
What role do small and medium sized enteprises (SMEs) play in the global economy? What role...
What role do small and medium sized enteprises (SMEs) play in the global economy? What role do SMEs play in economic development for a country and for the international economy?
Discuss skin appendages: nails and hair. What do you think is their function in humans?
Discuss skin appendages: nails and hair. What do you think is their function in humans?
What is the mechanism and reaction for oxidation of an alcohol? I had to do an...
What is the mechanism and reaction for oxidation of an alcohol? I had to do an experiment where I oxidize a secondary alcohal into a ketone by using sodium hypochlorite as an oxidizing reagent.
What is Osteoporosis? What can people do to reduce their risk of getting it
What is Osteoporosis? What can people do to reduce their risk of getting it
What do most small businesses do to reduce supply chain risk? Could they do something more...
What do most small businesses do to reduce supply chain risk? Could they do something more effective?
What are anchored inflationary expectations and how do they reduce the cost of an adverse inflation...
What are anchored inflationary expectations and how do they reduce the cost of an adverse inflation shock?
What would you be willing to do personally to reduce carbon dioxide emissions? What should we...
What would you be willing to do personally to reduce carbon dioxide emissions? What should we do,as a country, if anything?"
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT