Computational Fluid Dynamics

Computational Fluid Dynamics (CFD) is an emerging cross discipline which uses computers as tools and solves governing equations of fluid motion by numerical methods to reveal flow mechanism and principles as well as to study various complex fluid-media interaction problems.

The CFD research at China Aerodynamics Research and Development Center (CARDC) began in 1970's. The early work relied on engineering methods to evaluate the aerodynamic performances of simplified geometries. From 1980's to 1990's, linearized methods and the solutions of Euler equations became the main focus. In the latter half of 1990s, with the development of computer technology and CFD methods, the solution methods of Reynolds-Averaged Navier-Stokes (RANS) equations based on 2nd order numerical schemes were widely used in aerodynamic performance evaluation and shape design of flight vehicles with increasing width and depth. At the same time, great breakthroughs were made on high order accuracy numerical schemes, which gradually shifted from research to applications.

For more than 30 years, a number of world famous CFD experts, such as Prof. Zhang Hanxin, academician of the Chinese Academy of Science, rose at CARDC. They proposed a series of numerical schemes which gained great international recognition, such as Non-oscillatory and Non-free-parameter Dissipative difference schemes (NND), Essentially Non-oscillatory and Non-free-parameter (ENN) schemes, conservative-dissipation schemes, linear/non-linear weighted compact schemes. They also developed static and dynamic grid generation techniques, including multi-block structured grid generation, unstructured grid generation, Cartesian grid generation, hybrid structured/unstructured grid generation, as well as a series of in-house CFD software with intellectual properties. CARDC has been equipped with a high performance computer system with a peak speed of 1590Tflops/s. The aerodynamic research at CARDC covers all domains from underwater to high-altitude space, from low-speed to hypersonic flows, and is now directed to multi-disciplinary integration with flight mechanics, computational structural mechanics, magnetic fluid dynamics, aero-acoustics, aero-optics, and control theory. The development and applications of CFD at CARDC currently play important roles in numerical simulations, design and optimization, performance evaluation of various aircrafts and spacecraft, which makes great contributions to the development of China’s aeronautic and astronautic industry. In the area of civil engineering, CARDC is also an important contributor, such as in high speed trains, wind engineering, and so on.

By the year of 2030, CARDC will have built a world-class numerical simulation system which includes an E-class high performance computer, a series of CFD softwares, a series of multi-disciplinary analysis and design softwares as well as complete verification and validation system. CARDC will play a greater role in the design of next generation aerospace vehicles and national economy.

Research Fields 

1. High order numerical methods and complex flow mechanism

2 Aerodynamic computation and configuration design of aircraft 

3. Numerical computation of hypersonic aerodynamic forces and applications

4. Aerothermodynamics and thermal protection

5. Aero-physics theory and computation

6. CFD software development and testing

7. Flow field visualization and applications

8. Numerical techniques and applications