calculatorReviewed 2026-06-19
Hydraulic Diameter Calculator
Compute hydraulic diameter, cross-sectional area, wetted perimeter, and geometry interpretation for internal CFD passages.
Loading ScholarTool content...
Loading ScholarTool content...
CFD calculators and setup helpers for flow regimes, wall treatment, pressure loss, and solver preparation.
CFD tools focus on preprocessing checks and engineering interpretation for flow simulations, including hydraulic diameter, Reynolds number, Darcy friction factor, pressure drop, turbulence intensity, wall y-plus, and first-cell-height workflows.
Compute hydraulic diameter, cross-sectional area, wetted perimeter, and geometry interpretation for internal CFD passages.
Compute Reynolds number for internal hydraulic-diameter workflows or external/general characteristic lengths.
Compare Colebrook, Haaland, and Swamee-Jain turbulent friction-factor methods with laminar and transitional warnings.
Compute segment pressure drop with direct or calculated Darcy friction factor and CFD geometry inputs.
Estimate CFD inlet turbulence intensity from direct RMS fluctuation, Reynolds number, or low/medium/high presets.
Compute y plus using friction velocity, wall shear, Darcy friction factor, or skin-friction coefficient modes.
Compute wall-to-cell-centre distance and full first-layer height using y+, viscosity, friction velocity, and cell-centre fraction.
ScholarTool category pages prioritize calculation context, unit discipline, assumptions, and interpretation so users can understand when a result is appropriate and when validated software or standards are required.
Last reviewed: 2026-06-17