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Contents
4.6 Numerical Simulation of Flow-Field in a Large
Lowspeed Closed-Circuit Aeroacoustics Wind Tunnel
321
4.6.1 Problem Description
321
4.6.2 The Physical Model
323
4.6.3 Mesh Generation and Boundary Conditions
325
4.6.4 Results
325
5 Experimental Fluid Mechanics
333
5.1 Classical Fluid Mechanics Experiment
333
5.2 Similarity Principle
339
5.3 Application of Similarity Theory
344
5.4 Flow Visualization Measurement Technique
349
5.5 Flow Velocimetry Technique
361
5.6 Experimental Measurement Method for Dynamic
Forces
369
5.7 Test Error Analysis
373
6 Wind and Water Tunnel Equipment
381
6.1 Development of Wind Tunnel Equipment
381
6.2 Wind Tunnel Type
386
6.3 Low-Speed Wind Tunnel
392
6.4 Introduction to Typical Low-Speed Wind Tunnels
401
6.5 Supersonic Wind Tunnel
417
6.6 Transonic Wind Tunnel
420
6.7 Hypersonic Wind Tunnel
431
6.8 Variable Density Wind Tunnel
436
6.9 Water Tunnel (or Channel) Equipment
441
7 Flight Mystery and Aerodynamic Principles
445
7.1 Flying Fantasy
445
7.2
Exploratory Cognition of Flight
450
7.3 Rapid Development of Aircraft
454
7.4 Flight Principle
460
7.5 Wing Shape and Aerodynamic Coefficient
476
7.6 Supercritical Wing
484
7.7 Winglet
495
7.8 Slender Fuselage
498
7.9 Moment in Stable Flight and Tail
501
7.10 Demand of Aircraft Power (Engine)
507
7.11 High-Lift Device of an Aircraft
514
7.12 Aircraft Landing Gear
527
7.13 Aircraft Aerodynamic Noise
537