Question

What is the domain of dependence?

(a) Area which does not lie within the characteristic lines

(b) Area within the upstream characteristics

(c) Area within the downstream characteristics

(d) Area outside the left running wave

I have been asked this question by my school principal while I was bunking the class.

I would like to ask this question from Region of Influence and Domain of Dependencies in section Numerical Techniques for Steady Supersonic Flow of Aerodynamics

Answer 1

Correct option is (b) Area within the upstream characteristics

The explanation is: If we consider a point A in the flow field through which two characteristic lines pass (C+ and C–) then area which is between the two upstream characteristics of both left and right running waves is known as domain of dependence.