Aerodynamic Flow Categories

The various types of high Reynolds number aerodynamic flows can be categorized by the Venn diagram shown in Figure 1.16. All have mostly-irrotational flow with relatively thin boundary layers and wakes. Hence, much of the book will focus on potential flow modeling and prediction. Most aerodynamic bodies are also adiabatic, so the treatment of viscous flows here will focus on adiabatic boundary layers.

Viscous (High Reynolds Number)

Подпись: Low Speed M 2<< 1 Low speed BLs with heat transfer Подпись:

Подпись: Adiaba tic qv = 0 qn = 0 High speed BLs without heat transfer
Подпись: Incompressible p = constant

High Speed Boundary Layers with heat transfer

Подпись: Incompressible potential flows

Подпись: Compressible potential flows

Isentropic, Irrotational
ю= 0

Figure 1.16: Aerodynamic flow categories. This book will focus primarily on potential flows and low speed adiabatic boundary layers, which are shown shaded.

Aerodynamic Flow Categories