$\text {If the velocity profile in a boundary layer was approximated by the linear distribution}$ $\text {$u = A y + B$, the boundary condition(s) that the profile would be required to satisfy is (are):}$
A) $\text {(1) and (2)}$$\quad $$\quad $$\quad $$\quad $$\quad $$\quad $(1) $\text {$u = 0$ at $y = 0$}$
B)$\text { (1) and (3)}$$\quad $$\quad $$\quad $$\quad $$\quad $$\quad $(2)$\text { $u = U _ { \infty }$ at $y = \delta$}$
C)$\text { (2) and (3)}$$\quad $$\quad $$\quad $$\quad $$\quad $$\quad $(3) $\text {$d u / d y = 0$ at $y = \delta$}$
D)$\text { (1), (2), and (4)}$$\quad $$\quad $$\quad $$\quad $(4)$\text { $d ^ { 2 } u / d y ^ { 2 } = 0$ at $y = 0$}$

Question

Quizplus · Accepted Answer

(1) and (2)
Using (1) and (2) would result in
$u = U _ { \infty } y / \delta$ The other two conditions would not be
used. The error when using this profile would be relatively large, as will be
discovered later.

If the velocity profile in a boundary layer was approximated by the linear distribution\text {If the velocity profile in a boundary layer was approximated by the linear distribution}If the velocity profile in a boundary layer was approximated by the linear distribution

$\text {If the velocity profile in a boundary layer was approximated by the linear distribution}$