Pressure Coefficient Mapper

Compute Cp from local pressure, freestream pressure, and dynamic pressure while visualizing airfoil tap location and loading sign.

visual calculatorAerodynamics & External Flow

Read the flow shape before trusting the number.

This page turns a CFD setup into regime, scale, and dominant-effect cues. Adjust the calculator below and compare the moving graphic with the computed result.

input scale

model

check

pressure coefficientCpairfoilpost-processing

formula

KaTeX rendered

\begin{aligned}\text{C\_p = (p - p\_inf) / (0.5 rho U\_inf\^{}2)}\end{aligned}

ASCII source

C_p = (p - p_inf) / (0.5 rho U_inf^2)

p_local (Pa)p_infinity (Pa)rho (kg/m^3)U_infinity (m/s)x / csurface

C_p

-1.14691

q_infinity (Pa)

1852.8125

V_local / U_inf

1.4652

interpretation

suction

For incompressible inviscid intuition, negative Cp implies locally faster flow. Compressible or separated regions need solver-field interpretation.

pressure coefficient Cp airfoil post-processing