36 citations · 113 across the 10 of their papers we have counts for
10 papers
Imaging the decay of quantized vortex rings to decipher quantum dissipation
Yuan Tang, Wei Guo, Hiromichi Kobayashi +3
Like many quantum fluids, superfluid helium-4 (He II) can be considered as a mixture of two miscible fluid components: an inviscid superfluid and a viscous normal fluid consisting…
Universal anomalous turbulent diffusion in quantum fluids
Satoshi Yui, Yuan Tang, Wei Guo +2
In classical viscous fluids, turbulent eddies are known to be responsible for the rapid spreading of embedded particles. But in an inviscid quantum fluid where the turbulence is in…
Transport and modeling of subgrid-scale turbulent kinetic energy in channel flows
Kazuhiro Inagaki, Hiromichi Kobayashi
To develop a more convenient subgrid-scale (SGS) model that performs well even in coarse grid cases, we investigate the transport and modeling of SGS turbulent kinetic energy (here…
Quantum Turbulence Coupled with Externally Driven Normal-Fluid Turbulence in Superfluid He
Satoshi Yui, Hiromichi Kobayashi, Makoto Tsubota +1
The coupled dynamics of quantum turbulence (QT) and normal-fluid turbulence (NFT) have been a central challenge in quantum hydrodynamics, since it is expected to cause the unsolved…
Role of various scale-similarity models in stabilized mixed subgrid-scale model
Kazuhiro Inagaki, Hiromichi Kobayashi
We investigate the physical role of various scale-similarity models in the stabilized mixed model [K. Abe, Int. J. Heat Fluid Flow, 39, 42 (2013); M. Inagaki and K. Abe, Int. J. He…
Fully Coupled Two-Fluid Dynamics in Superfluid He: Anomalous Anisotropic Velocity Fluctuations in Counterflow
Satoshi Yui, Hiromichi Kobayashi, Makoto Tsubota +1
We investigate the thermal counterflow of the superfluid He by numerically simulating three-dimensional fully coupled dynamics of the two fluids, namely quantized vortices and…
Numerical Study on Entrance Length in Thermal Counterflow of Superfluid He
Hiromichi Kobayashi, Satoshi Yui, Makoto Tsubota
Three-dimensional numerical simulations in a square duct were conducted to investigate entrance lengths of normal fluid and superfluid flows in a thermal counterflow of superfluid…
Three-Dimensional Coupled Dynamics of Two-Fluid Model in Superfluid He: Deformed Velocity Profile of Normal Fluid in Thermal Counterflow
Satoshi Yui, Makoto Tsubota, Hiromichi Kobayashi
The coupled dynamics of the two-fluid model of superfluid He is numerically studied for quantum turbulence of the thermal counterflow in a square channel. We combine the vortex…
A Reynolds-averaged turbulence modeling approach to the maintenance of the Venus superrotation
Akira Yoshizawa, Hiromichi Kobayashi, Norihiko Sugimoto +2
A maintenance mechanism of an approximately linear velocity profile of the Venus zonal flow or superrotation is explored, with the aid of a Reynolds-averaged turbulence modeling ap…
Double-Spin Asymmetry in the Cross Section for Exclusive rho^0 Production in Lepton-Proton Scattering
HERMES Collaboration, A. Airapetian
Evidence for a positive longitudinal double-spin asymmetry <A_1^rho> = 0.24 +-0.11 (stat) +-0.02 (syst) in the cross section for exclusive diffractive rho^0(770) vector meson produ…