1. Drag force:
1. on immersed bodies, 2.2.3-2 - 2.2.3-3
2. on tube in tube bank, 2.2.4-3 - 2.2.4-5
2. Drag reduction, 2.2.8-14
3. Drag reduction, 2.14.1-1 - 2.14.4-6