Before revision: Perturbation theory The pressure coefficient can be estimated for irrotational and isentropic flow by introducing the potential and the perturbation potential , normalized by the free-stream velocity Using Bernoulli's Equation, which can be rewritten as here is is the sound speed.
After revision: Perturbation theory The pressure coefficient can be estimated for irrotational and entropic flow by introducing the potential and the perturbation potential , normalized by the free-stream velocity Using Bernoulli's Equation, which can be rewritten as here is is the sound speed.