User:Egm6936.f09/Globally-undisturbed ambient flow

What is a "globally undisturbed ambient flow" (GUAF), and what is a "turbulent" GUAF, i.e., how could an "undisturbed" flow be "turbulent" at the same time? Is it an oxymoron?

Actually, "undisturbed flow" means flow with the absence of particles, whereas "disturbed flow" means flow with the presence of particles. Hence, a single-phase flow (without particles) is called a GUAF, and can be turbulent in itself. Clearly, a two-phase flow, with a carrier phase and a particle phase, is a "disturbed flow", which can also be turbulent.