Why source strength ‘X’ per unit length is constant over a given panel?(a) It allows it to varies from one panel to next panel(b) It does not allow it to varies from one panel to next panel(c) It remains in the same panel(d) The length will be changes from panel to panelThis question was addressed to me in an interview.This question is from Nonlifting Flow over Arbitrary Bodies topic in division Inviscid & Incompressible Flow of Aerodynamics

Why source strength ‘X’ per unit length is constant over a given p

1.	Why source strength ‘X’ per unit length is constant over a given panel?(a) It allows it to varies from one panel to next panel(b) It does not allow it to varies from one panel to next panel(c) It remains in the same panel(d) The length will be changes from panel to panelThis question was addressed to me in an interview.This question is from Nonlifting Flow over Arbitrary Bodies topic in division Inviscid & Incompressible Flow of Aerodynamics
Answer» Correct CHOICE is (a) It allows it to varies from one PANEL to next panel Best EXPLANATION: The source strength ‘X’ per unit length be constant over a GIVEN panel but allow it to vary from one panel to the next, that if there are total n panel. The source panel strength per unit length is ‘Xn’. Therefore boundary condition is IMPOSED numerically by defining the midpoint of each panel.

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