Fluid Mechanics seventh edition by Frank M. White · Problem P3.47

Integral Relations for a Control Volume — Frank M. White

Physics — Fluid Mechanics · linear-momentum-equation

Problem

A liquid jet of velocity

V_j

and diameter

D_j

strikes a fixed hollow cone, as in Fig. P3.47, and deflects back as a conical sheet at the same velocity. Find the cone angle

\theta

for which the restraining force

F = \frac{3}{2}\rho A_j V_j^2