Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Takahiro Iwayama"'
Autor:
Takahiro Iwayama, Takahiro Yajima
Publikováno v:
Journal of the Physical Society of Japan; 8/15/2023, Vol. 92 Issue 8, p1-11, 11p
Autor:
Takeshi Watanabe, Takahiro Iwayama
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 54:255701
The linear stability of double rows of equidistant point vortices for an inviscid generalized two-dimensional (2D) fluid system is studied. This system is characterized by the relation q = −(Δ) α/2 ψ between the active scalar q and the stream fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58e19e88f63a0e80fd5fb538cc6afa08
https://doi.org/10.1088/1751-8121/abfe75
https://doi.org/10.1088/1751-8121/abfe75
Publikováno v:
Fluid Dynamics Research. 51:055507
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de935563759977ebe039f4a39b9df0f9
https://doi.org/10.1088/1873-7005/ab2ead
https://doi.org/10.1088/1873-7005/ab2ead
Autor:
Masakazu Sueyoshi, Takahiro Iwayama
Publikováno v:
Fluid Dynamics Research. 39:346-352
We show that the Charney–Hasegawa–Mima (CHM) equation in the asymptotic model (CHM-AM) regime possesses the non-canonical Hamiltonian structure. The CHM-AM corresponds to the CHM equation in the asymptotic limit of length scales large compared to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16f04b7bc3369bf24d481986f1ef4ea7
https://doi.org/10.1016/j.fluiddyn.2006.11.002
https://doi.org/10.1016/j.fluiddyn.2006.11.002
Autor:
Shin-Ichi Ishida, Takahiro Iwayama
Publikováno v:
Journal of the Meteorological Society of Japan. Ser. II. 84:839-851
The role of each nonlinear term in the vorticity and divergence equations derived from the primitive equations to the steady nonlinear Ekman pumping is examined for uni-directional flows with a small Rossby number comprehensively. For uni-directional
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abac3c553fc9fd9c749ccc0bb8b87a1a
https://doi.org/10.2151/jmsj.84.839
https://doi.org/10.2151/jmsj.84.839
Autor:
Takeshi Watanabe, Takahiro Iwayama
Publikováno v:
Journal of the Physical Society of Japan. 73:3319-3330
The enstrophy inertial range of a family of two-dimensional turbulent flows, so-called α-turbulence, is investigated theoretically and numerically. Introducing the large-scale correction into Kraichnan–Leith–Batchelor theory, we derive a unified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69b3e3fbfdf3b1d6b3e0d0da704b166c
https://doi.org/10.1143/jpsj.73.3319
https://doi.org/10.1143/jpsj.73.3319
Publikováno v:
Journal of the Physical Society of Japan. 70:376-386
The low wave number range of decaying turbulence governed by the Charney-Hasegawa-Mima (CHM) equation is examined theoretically and by direct numerical simulation. Here, the low wave number range is defined as values of the wave number k below the wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0fae909db984aa984ce348e740f8acf
https://doi.org/10.1143/jpsj.70.376
https://doi.org/10.1143/jpsj.70.376
Publikováno v:
Physical Review E. 57:1636-1643
We numerically study the time evolution of coherent vortices in decaying turbulence described by the Charney-Hasegawa-Mima equation with the weak dissipation. Self-organized coherent vortices develop through the mutual advection and the vortex mergin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::772ed4f6f6469e8fd859311420c2b54e
https://doi.org/10.1103/physreve.57.1636
https://doi.org/10.1103/physreve.57.1636
Publikováno v:
Progress of Theoretical Physics. 98:1219-1224
In the second stage of two-dimensional decaying turbulence, statistical quantities such as the average vortex size and the enstrophy, etc. develop algebraically with time. In par ticular, the number of vortices decreases as N(t) '" C{ with a certai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3846130ae99e557c381c61815a28b9c1
https://doi.org/10.1143/ptp.98.1219
https://doi.org/10.1143/ptp.98.1219
Publikováno v:
International Journal of Bifurcation and Chaos. :2871-2879
The present paper describes the effects of the system noise on the chaotic behavior of the Roessler type signal from the point of view of controlling chaos. We have investigated the system equations by a variable transformation method and have then c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df4fc62758e8423d15153d3c61e882d2
https://doi.org/10.1142/s0218127497001953
https://doi.org/10.1142/s0218127497001953