Venturi Nozzle Geometry Specification Template (CAD-ready)

A Venturi nozzle leverages the Venturi effect—acceleration of fluid through a constricted throat to induce pressure drop and promote atomization or mixing—making its geometry foundational to hydraulic performance (e.g., flow rate, droplet size distribution, cavitation onset, and pressure loss). The CAD-ready specification template codifies this physics-driven geometry using dimensionally constrained, feature-based parametric definitions: inlet diameter and profile (e.g., rounded or beveled entry), converging section (defined by length, angle, and curvature), throat diameter and length (critical for Reynolds number and choked-flow behavior), diverging section (with expansion angle and surface finish requirements), and outlet geometry (including exit chamfer and axial alignment tolerances). Each parameter is assigned GD&T (Geometric Dimensioning and Tolerancing) callouts aligned with ISO 1101 or ASME Y14.5 standards to ensure metrological verifiability. Beyond geometry, the template embeds metadata fields for material grade, surface roughness (Ra), and intended operating range (e.g., ΔP = 0.2–3.0 bar, Q = 0.5–15 L/min), enabling automated validation against CFD boundary conditions or empirical calibration databases. This structured approach bridges theoretical fluid mechanics with practical implementation—supporting rapid iteration in agricultural sprayers, industrial cleaning systems, and pharmaceutical inhaler development—while maintaining compliance with ISO 5640 (nozzle performance testing) and ISO 8502 (surface preparation nozzles).