pub fn continuity_velocity(
area_a: f64,
velocity_a: f64,
area_b: f64,
) -> Option<f64>Expand description
Computes downstream velocity from continuity for incompressible flow.
Formula: A1 * v1 = A2 * v2, so v2 = A1 * v1 / A2
Returns None when area_a is negative, when area_b is less than or equal to zero, when
any input is not finite, or when the computed result is not finite.