85 citations · 697 across the 21 of their papers we have counts for
8 papers · 1 filter
Unsteady large-scale wake structure behind levitated freestream-aligned circular cylinder
Sho Yokota, Taku Nonomura
The relationships between characteristic large-scale wake structures appearing behind a freestream-aligned circular cylinder are investigated and discussed from the velocity field…
Flow instability and momentum exchange in separation control by a synthetic jet
Yoshiaki Abe, Taku Nonomura, Kozo Fujii
This study investigates a mechanism of controlling separated flows around an airfoil using a synthetic jet (SJ). A large-eddy simulation (LES) was performed for a leading-edge sepa…
Spatiotemporal Superresolution Measurement based on POD and Sparse Regression applied to a Supersonic Jet measured by PIV and Near-field Microphone
Yuta Ozawa, Takayuki Nagata, Taku Nonomura
The present study proposed the framework of the spatiotemporal superresolution measurement based on the sparse regression with dimensionality reduction using the proper orthogonal…
Optimization of Sparse Sensor Placement for Estimation of Wind Direction and Surface Pressure Distribution Using Time-Averaged Pressure-Sensitive Paint Data on Automobile Model
Ryoma Inoba, Kazuki Uchida, Yuto Iwasaki +5
This study proposes a method for predicting the wind direction against the simple automobile model (Ahmed model) and the surface pressure distributions on it by using data-driven o…
Data-Driven Approach for Noise Reduction in Pressure-Sensitive Paint Data Based on Modal Expansion and Time-Series Data at Optimally Placed Points
Tomoki Inoue, Yu Matsuda, Tsubasa Ikami +3
We propose a noise reduction method for unsteady pressure-sensitive paint (PSP) data based on modal expansion, the coefficients of which are determined from time-series data at opt…
Quantitative Evaluation of a Linear Reduced-order Model based on Particle-image-velocimetry Data of Separated Flow Field around Airfoil
Taku Nonomura, Koki Nankai, Yuto Iwasaki +2
A quantitative evaluation method for a reduced-order model of the flow field around an NACA0015 airfoil based on particle image velocimetry (PIV) data is proposed in the present pa…
Extended-Kalman-filter-based dynamic mode decomposition for simultaneous system identification and denoising
Taku Nonomura, Hisaichi Shibata, Ryoji Takaki
A new dynamic mode decomposition (DMD) method is introduced for simultaneous online system identification and denoising in conjunction with the adoption of an extended Kalman filte…
Dynamic mode decomposition using a Kalman filter for parameter estimation
Taku Nonomura, Hisaichi Shibata, Ryoji Takaki
A novel dynamic mode decomposition (DMD) method based on a Kalman filter is proposed. This paper explains the fast algorithm of the proposed Kalman filter DMD (KFDMD) in combinatio…