68 citations · 748 across the 29 of their papers we have counts for
11 papers · 1 filter
Modeling stellar convective transport with plumes : II. Transport Properties of Locally and Non-locally driven Convection
Youhei Masada, Tomoya Takiwaki, Nobumitsu Yoko
We perform three-dimensional hydrodynamic simulations of two idealized regimes of stellar convection: a cooling-driven model (Model C) and an entropy-gradient-driven model (Model S…
Turbulent processes and mean-field dynamo
Axel Brandenburg, Detlef Elstner, Youhei Masada +1
Mean-field dynamo theory has important applications in solar physics and galactic magnetism. We discuss some of the many turbulence effects relevant to the generation of large-scal…
Rotational Dependence of Large-scale Dynamo in Strongly-stratified Convection: What Causes It?
Youhei Masada, Takayoshi Sano
In a rigidly-rotating magnetohydrodynamic (MHD) system with convective turbulence, a large-scale dynamo, categorized as the -type, can be excited when the spin rate is large e…
Multi-Scale Deep Learning for Estimating Horizontal Velocity Fields on the Solar Surface
Ryohtaroh T. Ishikawa, Motoki Nakata, Yukio Katsukawa +2
The dynamics in the photosphere is governed by the multi-scale turbulent convection termed as granulation and supergranulation. It is important to derive 3-dimensional velocity vec…
Spontaneous Formation of Surface Magnetic Structure from Large-scale Dynamo in Strongly-stratified Convection
Youhei Masada, Takayoshi Sano
We report the first successful simulation of spontaneous formation of surface magnetic structures from a large-scale dynamo by strongly-stratified thermal convection in Cartesian g…
Differential Rotation in Magnetized and Non-magnetized Stars
Jun Mabuchi, Youhei Masada, Akira Kageyama
Effects of magnetic field on stellar differential rotation are studied by comparing magnetohydrodynamic (MHD) models and their hydrodynamic (HD) counterparts in the broad range of…