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Is vector (v) is positive when directed away from the body?

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in Aerodynamics by (773k points)
Is vector (v) is positive when directed away from the body?

(a) True

(b) False

This question was addressed to me by my school principal while I was bunking the class.

I would like to ask this question from Nonlifting Flow over Arbitrary Bodies topic in division Inviscid & Incompressible Flow of Aerodynamics

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Best answer
Correct option is (a) True

The best I can explain: The direction of the outward unit normal vector is positive when directed away from the body and it is carried out in the denominator at a singular point arises on the ith panel because the control point itself can be the contribution to the j=1 panel.

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