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When both the source and sink are of equal strength it is called ________(a) sink(b) source(c) doublet(d) positive derivative of flowThis question was posed to me in my homework.Question is taken from Doublet Flow topic in chapter Inviscid & Incompressible Flow of Aerodynamics

Answer»

Correct option is (c) doublet

Best explanation: Doublet is the special case of source and sink with equal strength. LET q and -q be the strength of source and sink RESPECTIVELY. Let 2a be the DISTANCE between the source and sink and it approaches ZERO. The product 2a*q is called as doublet strength.



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