Question

Which approximations are made in case of panel method in case of subsonic problems?

(a) Quadrilateral panels with constant source strength

(b) Curved panels with constant source strength

(c) Triangular panels with constant sink

(d) Quadrilateral panels with constant sink

This question was addressed to me in an interview.

My enquiry is from General Three Dimensional Flows-Panel Techniques topic in division Three-Dimensional Incompressible Flow of Aerodynamics

Answer 1

The correct choice is (a) Quadrilateral panels with constant source strength

The best explanation: In case of panel method, the entire body is approximated into several smaller quadrilateral panels having constant source strength. Although when the bodies get complex, higher order panel technique is used, which makes use of curved panels with variable source strengths.