JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
62268015.pdf1.08 MB
title縮約モデルと粒子フィルタを用いたリアルタイムデータ同化計算
Other TitleReal-Time Data Assimilation Using Particle Filter and Reduced Order Model
Author(jpn)菊地, 亮太; 三坂, 孝志; 大林, 茂
Author(eng)Kikuchi, Ryota; Misaka, Takashi; Obayashi, Shigeru
Author Affiliation(jpn)東北大学流体科学研究所; 東北大学流体科学研究所; 東北大学流体科学研究所
Author Affiliation(eng)Institute of Fluid Science, Tohoku University; Institute of Fluid Science, Tohoku University; Institute of Fluid Science, Tohoku University
Issue Date2014-03-31
Publisher宇宙航空研究開発機構(JAXA)
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料: 第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013論文集
JAXA Special Publication
VolumeJAXA-SP-13-011
Start page83
End page88
Publication date2014-03-31
Languagejpn
eng
AbstractIn this research, aiming at real-time data assimilation, a reduced order model (ROM) and a particle filter (PF) are applied to predict the Karman vortex around a circular cylinder. The ROM is an efficient tool to calculate a flow field in real-time because the ROM consumes extremely less computational time than the original numerical model. The PF is employed to estimate coefficients of the ROM by using observed velocity components in the wake of the circular cylinder. Comparing the result of the ROM and that of the numerical analysis by Building Cube Methods (BCM), the phase difference of the Karman vortex between the ROM and the observations was corrected. The proposed method could estimate the flow field accurately in real-time even though the observation contained artificial measurement errors.
Description会議情報: 第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013 (2013年7月4日-5日. タワーホール船堀), 東京
形態: カラー図版あり
Meeting Information: 45th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2013 (July 4-5, 2013. Tower Hall Funabori), Tokyo, Japan
Physical characteristics: Original contains color illustrations
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryFluid Mechanics and Thermodynamics
ISSN1349-113X
NCIDAA11984031
SHI-NOAA0062268015
Report NoJAXA-SP-13-011
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/14315


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.