Feasibility Study of Optimal Measurement by Real-time Connection of Supercomputer and Wind Tunnel

2015 Fiscal Year Final Research Report

• Project/Area Number: 25820039
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Tohoku University
• Principal Investigator: Misaka Takashi 東北大学, 学際科学フロンティア研究所, 助教 (20645139)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: データ同化 / 数値流体力学 / 感度解析 / 計測最適化 / 風洞実験

Outline of Final Research Achievements

Feasibility study of optimal measurement based on data assimilation was conducted by connecting a supercomputer and a wind tunnel in real-time. In the experiment, the wake of a model was measured by a Pitot tube, which is supported by a three-dimensional traverse system. Processing of measurement data, control of the traverse system, and data transfer to the supercomputer were carried out by the LabVIEW software installed on a PC. Numerical flow analysis is conducted during the measurement on the supercomputer so that the sensitivity of additional measurements to a cost function can be obtained and the information is fed back to the LabVIEW PC to locate new measurement positions. Numerical costs of flow prediction and sensitivity analysis were reduced by using a reduced-order model based on a radial basis function. We also introduced the AVS software with the augmented realization (AR) module which enables to superimpose images of numerical results on the view of the experiment.

Free Research Field

数値流体力学