Aerospace Fluid Engineering Laboratory

Creative Flow Research Division

Aerospace Fluid Engineering Laboratory

Shigeru Obayashi
Associate Professor
Assistant Professor

Computational fluid dynamics (CFD) is a numerical method for simulating the motion of fluids inside or around an object by using computers. With the progress in computer performance, CFD technologies have been evolving in terms of accuracy and usefulness day by day. Nowadays, CFD is widely utilized for investigating various kinds of phenomena in fluid dynamics. Aiming at further utilization and development of CFD technologies, this laboratory is promoting transdisciplinary researches, which are motivated by the integration of CFD with other science and technologies. Research themes that are currently ongoing in this laboratory are (1) multi-objective design exploration for design space visualization and knowledge discovery (CFD + optimization and data mining), (2) development of a silent supersonic biplane theory (CFD + wind tunnel and flight tests), and (3) measurement-integrated simulation of turbulence phenomena (CFD + LIDAR measurement and data assimilation). These researches will lead to innovative solutions for various kinds of engineering problems.

Development of a Silent Supersonic Transport using EFD and CFD

Sonic boom mitigation is the key technology for developing supersonic transport. This study investigates the “supersonic biplane theory” which will allow silent supersonic flight, to develop a next-generation supersonic transport, MISORA, using experimental and computational fluid dynamics (EFD and CFD) techniques.

Design Exploration Method using Both EFD and CFD

Not only CFD data but also a lot of EFD data are required to achive a highly robust design for fluid machinery. In our laboratory, a quick and low-cost experiment system adopting the wind tunnel model produced by the 3-D printer is developed to improve the productivity of design (experimental) data.

measurement-Integrated Simulation of Turbulence Phenomena

Turbulence is a critical phenomenon for the safety of aircrafts. This study integrates CFD simulations with Dopper LIDAR measurement and meteorological model, and establishes a system that helps us to investigate and predict turbulence phenomena at various flying and atmospheric conditions in advance.

Aerospace Fluid Engineering Laboratory