Stagnation Point - Pressure Coefficient

Pressure Coefficient

This information can be used to show that the pressure coefficient at a stagnation point is unity (positive one):

where:

is pressure coefficient

is static pressure at the point at which pressure coefficient is being evaluated

is static pressure at points remote from the body (freestream static pressure)

is dynamic pressure at points remote from the body (freestream dynamic pressure)

Stagnation pressure minus freestream static pressure is equal to freestream dynamic pressure; therefore the pressure coefficient at stagnation points is +1.