Function volumetric_flow_rate 

pub fn volumetric_flow_rate(area: f64, velocity: f64) -> Option<f64>

Computes volumetric flow rate from area and flow velocity.

Formula: Q = A * v

Returns None when area is negative, when either input is not finite, or when the computed result is not finite.

Examples

use use_fluid::volumetric_flow_rate;

assert_eq!(volumetric_flow_rate(2.0, 3.0), Some(6.0));
assert_eq!(volumetric_flow_rate(2.0, -3.0), Some(-6.0));