Splash-CFD Tools

y⁺ Calculator

Precision near-wall mesh sizing for turbulent CFD. Supports all major RANS and LES turbulence models.

y+ = y * u_tau / v
y = first cell height
u_tau = sqrt(tau_w / rho)
v = kinematic viscosity
C_f = 0.058 * Re^(-0.2)

Flow Conditions

Fluid TypeFreestream Velocity [m/s]Reference Length [m]Kinematic Viscosity [m²/s]Fluid Density [kg/m³]Mach Number [optional]

Mesh Target

Geometry TypeTarget y+ ValueNumber of Prism LayersLayer Growth Ratio

Splash-CFD automates mesh sizing, prism layer generation, and y+ verification — integrated directly with OpenFOAM.

y+ Calculator