Fluid Mechanics in SWCE

The displacement thickness $\delta^*$ of a boundary layer on a flat plate is defined as:

Options:

• (A) $\delta^* = \int_0^\delta \left(1 - \frac{u}{U_\infty}\right) dy$
• (B) $\delta^* = \int_0^\delta \frac{u}{U_\infty} dy$
• (C) $\delta^* = \int_0^\delta \frac{u}{U_\infty}\left(1 - \frac{u}{U_\infty}\right) dy$
• (D) $\delta^* = \delta / 2$