What is the surface boundary condition for a thin airfoil at a subsonic flow? (Where shape of the airfoil is represented as y = f(x))

Question

TuteeHUB · Accepted Answer

$\frac {∂ϕ}{∂y} = \frac {df}{dy}$

TuteeHUB · Answer

$\frac {∂ϕ}{∂x}$ = V∞ $\frac {df}{dx}$

TuteeHUB · Answer

$\frac {∂ϕ}{∂y} = \frac {df}{dy}$

TuteeHUB · Answer

$\frac {∂ϕ}{∂x}$ = – V$_∞^2 \frac {df}{dx}$

TuteeHUB · Answer

$\frac {∂ϕ}{∂x} = \frac {dV_∞}{dx}$

1.	What is the surface boundary condition for a thin airfoil at a subsonic flow? (Where shape of the airfoil is represented as y = f(x))
A.	\(\frac {∂ϕ}{∂x}\) = V∞ \(\frac {df}{dx}\)
B.	\(\frac {∂ϕ}{∂y} = \frac {df}{dy}\)
C.	\(\frac {∂ϕ}{∂x}\) = – V\(_∞^2 \frac {df}{dx}\)
D.	\(\frac {∂ϕ}{∂x} = \frac {dV_∞}{dx}\)
Answer» B. \(\frac {∂ϕ}{∂y} = \frac {df}{dy}\)

Discussion