Newsletter  2015.12  Index

Theme : "Mechanical Engineering Congress, 2015 Japan (MECJ-15) Part 2" Preface T.TAKEMURA, I.KINEFUCHI, H.FUJII, H.YOKOYAMA Development of CFD for Design Problems of Fluid System Kazuhiro TANAKA (Kyushu Institute of Technology) Workshop on Innovative Development of Frontier Fluids Engineering based on Functional Fluids Research Hidemasa TAKANA, Hideya NISHIYAMA (Tohoku University) Applications of Plasma Flow and Ionic Liquid to Energy Technologies Hidemasa TAKANA (Tohoku University) Bioengineering Application of Electro-conjugate Fluid Kenjiro TAKEMURA (Keio University) Development of Innovative Energy Conversion and Control using Magnetic Functional Fluids Yuhiro IWAMOTO (Doshisha University） Advanced Energy and Aerospace Technologies using Magnetohydrodynamics Takayasu FUJINO (University of Tsukuba）

 

Development of CFD for Design Problems of Fluid System

Kazuhiro TANAKA Kyushu Institute of Technology

Abstract

The base of the mechanical engineering is the dynamics including the fluid dynamics. At the same time, as methodology to incorporate the dynamics in a concrete design, design problem such as the system control, the design optimization, the production schedule and so on is originally included in the mechanical engineering as an important base. Therefore, CFD should be utilized more for the issue of design problem of industrial products. In late years, industrial products are actually made up of a machine-electricity-control-firmware fusion product. From this viewpoint, it becomes the urgent business in the future manufacturing to establish design technique to realize manufacturing not through designing an individual element but through designing a system comprehensively.

We should be free from the conventional thought applying CFD to for an existing design process. It is important whether CFD can greatly revolutionize design process itself or CFD can suggest a design process to be tied to the innovation of the product or CFD can thereby wake up a technical breakthrough. The times when the true value of CFD is called into question has come. 1D-CAE can catch the essence of things precisely and can express a system simply in a good form with possibility. The way to the design optimization of the system becomes clear after integrating CFD into 1D-CAE. For the fluid engineering that has greatly developed by taking in a CFD technology, it is expected to develop more by considering systems dynamics. As a result, the technique of modeling & simulation called the real question → physical model → mathematical model → information technology → result evaluation develops more, and the integration to a total design is planned more and more, and it is expected that a CFD-based total design technology to enable new system creation will be created.

 

Key words

CFD, Design problem, 1D-CAE, Bondgraph,System control,Design optimization, Total design technology

 

Figures

Fig.1 Worlds of CFD，１D-CAE，and Design optimization