Question

The skin friction drag on a sphere for re less than 0.2

Answer 1

Answer:

1) one- third of the total drag lll

2) half of the total drag

Explanation:

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Answer 2

Answer:

If friction is not taken into account, Vr1=Vr2.

Complete Question:

The skin friction drag on a sphere for re less than 0.2, If the friction is neglected, then_______

Explanation:

• The drag coefficient has no dimensions in fluid dynamics. It is an irrational amount. The drag coefficient is a measurement of an object's resistance in a fluid environment. It is mostly employed in the fields of air and water.
• The component of profile drag is affected by skin friction. Form drag is another name for pressure drag. It is primarily caused by the object's form.
• The drag on bodies with a bigger cross area is greater. Form drag is another name for pressure drag. It is primarily caused by the object's form.
• The drag coefficient has no dimensions in fluid dynamics. It is an irrational amount. The drag coefficient is a measurement of an object's resistance in a fluid environment. It is mostly employed in the fields of air and water. Cd is the symbol for it.
• Vr1 denotes the relative velocity of the jet. It's the vane's relative velocity at the inlet. The relative velocity of the inlet to the vane is calculated by subtracting the vane's absolute velocity from its vectorial velocity. The same thing happens with Vr2. As a result, if friction is ignored, Vr1=Vr2.

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