Wind Tunnel Design and Measurement Technology

Facility design is a technology that provides wind tunnels and related test rigs for aerodynamic experiments and tests, where professional knowledge and techniques from different domains, including aerodynamics, mechanics, electronics, and control, are required, and where performance and flow quality of the wind tunnels are met by careful engineering. Facility design has become an essential foundation for the development of aerodynamics, especially for the development of high performance aircraft.

Facility Design and Instrumentation Institute of China Aerodynamics Research & Development Center is the only domestic integrated professional institute on aerodynamic facility design and research, which cultivates and trains an elite design group, and which continues to practice wind tunnel design and related research.

Aerodynamic design consists of feasibility investigation, design, and construction of wind tunnels. The design will be validated by simulation of its flow and acoustic field by CFD tools. Pilot wind tunnels are used to investigate critical technologies for more reliable design before the design of full-scale tunnels.

Mechanical design consists of the design and analysis of wind tunnel components, including drive system (fans, compressors) and its accessories. Commercial software tools are used to assess the strength and stiffness of important components as model support system and flexible nozzle walls.

Measurement and control system technology covers low speed, transonic, and supersonic wind tunnel measurement and control system design. Advanced technologies have been developed in the following aspects: Mach number control for wind tunnels, total pressure control, multiple variable control for wind tunnel flow field, high precision motion control of complex structures, and modern control theory. Abundant experience and strong investigation capability has been accumulated in wind tunnel measurements, dynamic parallel measurements, acoustic measurements, and wind tunnel calibration. Simulation and analysis tools have also been developed for advanced control strategies, hydraulic driven and variable target systems.

The laboratory owns a lot of non-intrusive measurement equipment such as infrared thermography , CCD photographs processing instrument, high Mach number PIV system, laser holographic measurement system for particle field, double-excited laser induced fluorescence probing system and high-speed wind tunnel devices and so on. The laboratory has non-intrusive measurement capabilities of density and temperature of compressible gas and technologies of tracking all kinds of trajectories. The laboratory is able to undertake research, design and manufacture of optical products. The laboratory also holds capacity of research and application of infrared and photoelectric technology. And the laboratory reaches the domestic advanced level in non-intrusive measurement of density and temperature of compressible flow.

CARDC has designed and constructed over 50 facilities up to 2015, including the 8m×6m low speed wind tunnel, the Φ5m vertical wind tunnel, the 3m×2m icing wind tunnel, the 5.5m×4m acoustic wind tunnel, the 1.2m transonic wind tunnel, the 2.4m transonic wind tunnel, the 2m supersonic wind tunnel, and the 2m shock tube.

Research Fields 

1. Wind tunnel noise control research

2. High efficiency axial fan design research

3. Fluid-solid thermal coupling research

4. Multivariable control system research on wind tunnel

5. Complex flow visualization research