Research and Development to Accomplish the Strategic Goals

【Overview】

With the aim of overcoming present limits in efficiency improvement and noise reduction of transportation and fluid machinery, we propose a revolutionary concept "aerodynamic/fluid-dynamic design though micro flow control devices" that surpasses aerodynamic/fluid-dynamic design though shape optimization. In this R&D project, we show the effectiveness of the new concept though computational fluid dynamics simulation on the "K computer" and outline the way to its practical application. (For more details, please visit http://flab.eng.isas.jaxa.jp/monozukuri.)

【Specific Research Targets】

1) Clarification of operational principle of micro flow control device

We explain the operational principle of micro flow control devices. Progress has been made in explaining flow control phenomena of laboratory-size fluid machinery using existing supercomputers. The plan is to use the "K computer" to explain the phenomena of larger transportation and fluid machinery (actual size in some cases) and to organize findings into a knowledge base.

2) Creation of knowledge base for practical application

We perform a parameter survey with the aim of solving issues on the path to practical application such as system reliability and robustness. Here, numerical simulations make possible large-scale design exploration (in conjunction with R&D Topic 4 in the "Industrial Innovation" field) for a variety of operating conditions and design parameters. The information obtained in this way will be organized into a knowledge base that can be used in actual design work.

3) Demonstration of effectiveness of the proposed concept

For actual use in industry, we develop a fluid control simulator incorporating feedback control targeting actual devices. We demonstrate the effectiveness of this simulator as a fluid control system by executing it on the "K computer".

Software to be used on the "K computer": LANS3D

Numerical simulation of separation control of flow over an airfoil by ON/OFF manipulation of micro flow control device (DBD plasma actuator)

Fluid control simulator of micro flow control device with feedback control for transportation and fluid machinery in actual size