22 citations · 95 across the 7 of their papers we have counts for
8 papers
Anisotropy and intermittency in drift-wave turbulence with zonal flows: a two-dimensional continuous wavelet analysis
Katsunori Yoshimatsu, Zetao Lin, Hideaki Miura +1
We examine anisotropy and spatial intermittency at small scales in drift-wave turbulence with zonal flows. We use a two-dimensional directional continuous wavelet transform, which…
Heavy Particle Clustering in Inertial Subrange of High--Reynolds Number Turbulence
Keigo Matsuda, Katsunori Yoshimatsu, Kai Schneider
Direct numerical simulation of homogeneous isotropic turbulence shows pronounced clustering of inertial particles in the inertial subrange at high Reynolds number, in addition to t…
Machine learning-based vorticity evolution and superresolution of homogeneous isotropic turbulence using wavelet projection
Tomoki Asaka, Katsunori Yoshimatsu, Kai Schneider
A wavelet-based machine learning method is proposed for predicting the time evolution of homogeneous isotropic turbulence where vortex tubes are preserved. Three-dimensional convol…
Scale-dependent statistics of inertial particle distribution in high Reynolds number turbulence
Keigo Matsuda, Kai Schneider, Katsunori Yoshimatsu
Multiscale statistical analyses of inertial particle distributions are presented to investigate the statistical signature of clustering and void regions in particle-laden incompres…
Examination of the four-fifths law for longitudinal third-order moments in incompressible magnetohydrodynamic turbulence in a periodic box
Katsunori Yoshimatsu
The four-fifths law for third-order longitudinal moments is examined, by the use of direct numerical simulation data on three-dimensional forced incompressible magnetohydrodynamic…
Volume penalization for inhomogeneous Neumann boundary conditions modeling scalar flux in complicated geometry
Teluo Sakurai, Katsunori Yoshimatsu, Naoya Okamoto +1
We develop a volume penalization method for inhomogeneous Neumann boundary conditions, generalizing the flux-based volume penalization method for homogeneous Neumann boundary condi…
Wavelet-based regularization of the Galerkin truncated three-dimensional incompressible Euler flows
Marie Farge, Naoya Okamoto, Kai Schneider +1
We present numerical simulations of the three-dimensional Galerkin truncated incompressible Euler equations that we integrate in time while regularizing the solution by applying a…
Coherent structure extraction in turbulent channel flow using boundary adapted wavelets
Teluo Sakurai, Katsunori Yoshimatsu, Kai Schneider +3
We present a construction of isotropic boundary adapted wavelets, which are orthogonal and yield a multi-resolution analysis. We analyze direct numerical simulation data of turbule…